28/jul/2011 srf’11 @chicago 1 test results of the international s1-global cryomodule kirk
TRANSCRIPT
28Jul2011 SRFrsquo11 Chicago
1
Test Results of the International S1-Global Cryomodule
Kirk
superconducting rf test facility
C Pagani P Pierini A Bosotti R Paparella INFN (Italy)
K Jensch D Kostin L Lilje A Matheisen W-D Moeller M Schmoekel P Schilling H Weise N Walker DESY (Germany)
T Arkan S Barbanotti M Battistoni H Carter
M Champion A Hocker R Kephart J Kerby D Mitchell Y Pischalnikov TJ Peterson M Ross W Schappert B Smith FNAL (USA)
C Adolphsen C Nantista SLAC (USA)
M Akemoto S Fukuda K Hara H Hayano N Higashi E Kako H Katagiri Y Kojima Y Kondo T Matsumoto H Matsushita
S Michizono T Miura H Nakai H Nakajima K Nakanishi S Noguchi N Ohuchi T Saeki M Satoh T Shidara T Shishido T Takenaka A Terashima N Toge K Tsuchiya K Watanabe S Yamaguchi
A Yamamoto Y Yamamoto(Kirk) K Yokoya M Yoshida KEK (Japan)
2
International Team for ldquoS1-Globalrdquo
28Jul2011 SRFrsquo11 Chicago
61 persons from 5 Labs
superconducting rf test facility
28Jul2011 3
Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary
SRFrsquo11 Chicago
superconducting rf test facility
28Jul2011 4
Motivation amp History of S1-Global Motivation
Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule
Mutual understanding among SRF researchers engineers and technicians
HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011
SRFrsquo11 Chicago
superconducting rf test facility
528Jul2011 SRFrsquo11 Chicago
Blade Tuner (FNALINFN) Saclay Tuner (DESY)
Slide-Jack Tuner (KEK)
TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)
TESLA Cavity (DESYFNAL)Tesla-like (KEK)
Comparisonof
Performance
Main components in S1-G cryomodule
E Kako
The coupling is variable for both couplers
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
C Pagani P Pierini A Bosotti R Paparella INFN (Italy)
K Jensch D Kostin L Lilje A Matheisen W-D Moeller M Schmoekel P Schilling H Weise N Walker DESY (Germany)
T Arkan S Barbanotti M Battistoni H Carter
M Champion A Hocker R Kephart J Kerby D Mitchell Y Pischalnikov TJ Peterson M Ross W Schappert B Smith FNAL (USA)
C Adolphsen C Nantista SLAC (USA)
M Akemoto S Fukuda K Hara H Hayano N Higashi E Kako H Katagiri Y Kojima Y Kondo T Matsumoto H Matsushita
S Michizono T Miura H Nakai H Nakajima K Nakanishi S Noguchi N Ohuchi T Saeki M Satoh T Shidara T Shishido T Takenaka A Terashima N Toge K Tsuchiya K Watanabe S Yamaguchi
A Yamamoto Y Yamamoto(Kirk) K Yokoya M Yoshida KEK (Japan)
2
International Team for ldquoS1-Globalrdquo
28Jul2011 SRFrsquo11 Chicago
61 persons from 5 Labs
superconducting rf test facility
28Jul2011 3
Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary
SRFrsquo11 Chicago
superconducting rf test facility
28Jul2011 4
Motivation amp History of S1-Global Motivation
Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule
Mutual understanding among SRF researchers engineers and technicians
HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011
SRFrsquo11 Chicago
superconducting rf test facility
528Jul2011 SRFrsquo11 Chicago
Blade Tuner (FNALINFN) Saclay Tuner (DESY)
Slide-Jack Tuner (KEK)
TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)
TESLA Cavity (DESYFNAL)Tesla-like (KEK)
Comparisonof
Performance
Main components in S1-G cryomodule
E Kako
The coupling is variable for both couplers
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 3
Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary
SRFrsquo11 Chicago
superconducting rf test facility
28Jul2011 4
Motivation amp History of S1-Global Motivation
Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule
Mutual understanding among SRF researchers engineers and technicians
HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011
SRFrsquo11 Chicago
superconducting rf test facility
528Jul2011 SRFrsquo11 Chicago
Blade Tuner (FNALINFN) Saclay Tuner (DESY)
Slide-Jack Tuner (KEK)
TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)
TESLA Cavity (DESYFNAL)Tesla-like (KEK)
Comparisonof
Performance
Main components in S1-G cryomodule
E Kako
The coupling is variable for both couplers
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 4
Motivation amp History of S1-Global Motivation
Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule
Mutual understanding among SRF researchers engineers and technicians
HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011
SRFrsquo11 Chicago
superconducting rf test facility
528Jul2011 SRFrsquo11 Chicago
Blade Tuner (FNALINFN) Saclay Tuner (DESY)
Slide-Jack Tuner (KEK)
TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)
TESLA Cavity (DESYFNAL)Tesla-like (KEK)
Comparisonof
Performance
Main components in S1-G cryomodule
E Kako
The coupling is variable for both couplers
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
528Jul2011 SRFrsquo11 Chicago
Blade Tuner (FNALINFN) Saclay Tuner (DESY)
Slide-Jack Tuner (KEK)
TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)
TESLA Cavity (DESYFNAL)Tesla-like (KEK)
Comparisonof
Performance
Main components in S1-G cryomodule
E Kako
The coupling is variable for both couplers
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 6
S1-Global Cryomodule
SRFrsquo11 Chicago
Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)
Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)
2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 7
Cavity Performance VT
2 cavities from FNAL 2 cavities from DESY
8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 8
Collaboration for Cryomodule Assembly
Cavity string assembly (2010 Jan)
Tuner assembly (2010 Feb)
Coupler assembly (2010 Mar)
KEK Cavity string assembly (2010 Mar)
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 9
Installation into tunnel
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 10
Collaboration for Cryomodule Tests
Tuner performance tests (2010 July)
Cavity processing (2010 Sept)
Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)
05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW
28Jul2011 SRFrsquo11 Chicago 11
RF processing of input couplers
Aug 25 ~ Sept 07 (10 days) E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 12
RF processing time of input couplers
Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours
Cryomodule-A(STF-II couplers)ave processing time~ 13 hours
20 hr
20 hr
Vacuum IL 2x10-4 Pa
at room temperature
E KakoThe difference of the conditioning time between them is probably due to the structure of RF window
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 13
Adjustment of frequency (f0 )
Cryomodule - C Cryomodule - A
1300000MHz130000MHz
129992MHz
(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work
f0 = 129991 MHz (operation)
E KakoThe cause of these tuner troubles are probably due to the mechanical stress
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 14
QL of Variable Input Coupler
24 X 106
Cryomodule ndash C(TTF-III couplers)
Cryomodule ndash A(STF-II couplers)
E Kako The both couplers have a good performance for the adjustment of QL
QL = 24 x 106 Δfbw = 542Hz
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 15
Cavity performance between VT and CT
Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)
Unfortunately the gradient did not achieve the ILC specification
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 16
severe drop
Cavity performance between VT and CT
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 17
Status of high power operation
Real time detuning monitor
S Michizono
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 18
Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)
FBon Piezooff FBon Piezooff
Pre-detuningby motor tuneramp piezo tunerwith DC voltage
Compensationby piezo tuner inpulsed operation
Flat TopFlat Top
Rise Time Rise Time
200~500 Hz 2~3 kHz
E Kako
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
Pulse-shortening amp Data Analysis method
28Jul2011 SRFrsquo11 Chicago 19
50μsec step shortening
100 pulses average
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
Result of LFD measurement
28Jul2011 SRFrsquo11 Chicago 20
Cryomodule-A Cryomodule-C
We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse
f = K Eacc2
rise-upflat-topfull-pulse
rise-upflat-topfull-pulse
K [Hz(MVm)2] stiffness parameter
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 21
Comparison of Detuning Frequency by LFD
TESLA-like cavity package has a stiffer structure than others
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 22
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
D ft
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback ON E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 23
Result of Piezo Compensation for LFD
Δfpeak-to-peak
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 24
QL ΔfAES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
1708 1853
6305 pulses
7 Cavities OperationACC11 detuned
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
25SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Δf1708 1853
He pressure
He flow
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 26
QL
AES4
ZANON108 ZANON109
MHI5 MHI6
MHI7 MHI9
7 Cavities OperationACC11 detuned
AES4 ZANON108ZANON109
MHI5 MHI6 MHI7 MHI9ACC11
Required rf power for 8-cav operation
ndash39
ndash35
ndash07
ndash11
ndash16
+05
ndash06
More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation
E Kako
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 27
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
AES4
10MVm 10MVm
10MVm
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28SRFrsquo11 Chicago 28Jul2011
7 Cavities Operation
Eacc Eacc Eacc
φ φ φ
MHI6
10MVm10MVm 10MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 29
RF response of Quench for MHI6 40MVm
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 30
Dynamic Loss measurement
STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 31
TroublesThe performance of the two cavities dropped
between VT and CT
The tuners of the two cavities did not work at 2K
These problems are investigated in the near future
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 32
Summarybull Assembly work by the S1-Global team was successful
bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test
bull Mechanical vibration modes were found to vary from cavity to cavity
bull LFD measurement was successful MHI cavity turned out to be stiffer
bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness
bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler
bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss
bull Communication among the international members of the S1-Global team worked well
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention
superconducting rf test facility
28Jul2011 SRFrsquo11 Chicago 33
Thank you for your attention