status of horizontal mbk for xfel
TRANSCRIPT
Vladimir Vogel,Stefan Choroba, Andrzej Bienkowski, Andrey Cherepenko, Jens
Hartung, Thomas Froelich, Richard Wagner
Status of horizontal MBK for XFEL
2
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Outline
Specification and klystron interfaceTest resultsKlystron life time and fast protection Plans
3
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Specification
Version 10/02/2006A
Pulsed Klystron Amplifier: Description10 MW (peak) 150 kW (average)sealed-off, 1.3 GHz, fixed-tuned
Electromagnetically focused, waveguide output,Coaxial input, water cooled, ion-pumped
Including:Klystron tubes
Solenoid magnetsX-ray shielding
Ion pumpsTube socketsSupport case
TestingShipping crates
Specification for a 10 Megawatt (Peak)Amplifier at 1.3 GHz
Horizontal version MBK for the XFEL
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Klystron interface
D 600
750
1560
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
180 ~2800
1400
Double tanks
Pulse transformer+Filament+U,I measurement
Cables matchingplate
Oil coolingsystem
Tank hatch for filament connection
~500
Öl
Connection of horizontal klystron to the pulse transformer
6
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Why we need the connection module?
HV cable tothe HV pulsetransformer
HF filamenttransformer
Tubesocket
Klystron gun insulator320
HF powersupply
~3000
No open oil inside tunnel!!!1. 9 ton pulse transformer and 2 ton klystron
don’t need to be mechanical connected!2. Pulse transformer don’t need filament p/s and
Voltage-Current measurements!
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Connection module
High voltage cable connectionto the pulse transformer
Current monitor
Voltage monitor
High voltagescreens
Primary windingSecondary winding
Core material
BINP, Novosibirsk
~120 kV
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
HV cable
Nadezhda Evmenova, BINP Novosibirsk
Cable connection betweenklystron and pulse transformerWe have a plan to design it and testin cooperation with BINP, Novosibirsk
250 kV DC cable
klystron
Connectionmodule
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Horizontal MBK status
Workingtime
DESYAcceptance test
Deliveryto DESY
Factory testCompanyname
-October 2009, (plan)
September 2009, (plan)20.10.2008
Thales,TH 1802
160hours10.07.200914.05.200902.04.2009
CPI,VKL-8301B
1100 hours27.02.200818.09.200723.08.2007Toshiba,E3736H
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Halle 2, horizontal MBK test stands
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba horizontal MBK, exterior view
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, Gain and Bandwidth
U = 118.8kV, I = 129.5A
Frequency (MHz)1297 1298 1299 1300 1301 1302 1303
Out
put p
ower
(MW
)
0
2
4
6
8
10
Saturation90% of Saturation
Input power (W)0 20 40 60 80 100 120 140 160 180
Out
put p
ower
(MW
)0
2
4
6
8
10
U=116.1kV, I=128.1AU=106.8kV, I=111A
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, Efficiency and Output Power
Uhv (kV)70 75 80 85 90 95 100 105 110 115
Effi
cien
cy (%
)
48
50
52
54
56
58
60
62
64
66
68
70
Saturation mode
U hv (kV)70 75 80 85 90 95 100 105 110 115
Pou
t (M
W)
2
3
4
5
6
7
8
9
10
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, Plug-in power
PRR=10Hz, Thv=1.7mSec, Trf=1.5mSec, saturation mode
Pout DC HVPS (kW)80 100 120 140 160 180 200 220 240 260 280 300
Pou
t RF
(MW
)
2
3
4
5
6
7
8
9
10
New PPT modulator +ABB pulse transformer
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, short pulse
Input
Reflection frominput cavity
Output WEST
Output OST
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, second harmonic (one of modes)
Toshiba E3736H#1
Pin (db)-20 -15 -10 -5 0P
out (
dbm
, for
1.3
GH
z. d
bm+1
06, f
or 2
.6G
Hz
)
70
75
80
85
90
95
1.3GHz2.6GHz
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, spectrum of output signal
2 APCLRWR
3 APCLRWR
B
Att 20 dB*Ref 0 dBm
Center 1.3 GHz Span 20 MHz2 MHz/
*
*
RBW 10 kHzVBW 1 MHzSWT 100 s
1 PKMAXH
*
PRN
-80
-70
-60
-50
-40
-30
-20
-10
01
Marker 1 [T1 ] -1.64 dBm 1.300000000 GHz
2
Marker 2 [T1 ] -54.63 dBm 1.296320000 GHz
3
Delta 3 [T1 ] -53.64 dB 3.620000000 MHz
Date: 5.AUG.2009 11:45:16
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Toshiba MBK, output amplitude and phase
OST amplitude (diode)300kW-1mV
WEST forward amplitude, logarithmic
phase1degree-25mV
OST reflected amplitude, logarithmic
19
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
CPI MBK, exterior view
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
CPI MBK, gain
July 24, 2009 Trf=1500uSec, prr=10
Pin (W)0 20 40 60 80 100 120
Pou
t (M
W)
0
1
2
3
4
5
6
7
8
9
10
UhV=106.4kVU hV=111.9kVU hV=116.8kV
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
CPI MBK, bandwidth
Frequency (MHz)1296 1297 1298 1299 1300 1301 1302 1303 1304
Pou
t (M
W)
0
2
4
6
8
10
Pin =95 W, SaturationPin = 33 WPin= 43 W, 90% Power
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
CPI MBK, Efficiency and Output Power
CPI, 23.07.2009
Uklystron (kV)85 90 95 100 105 110 115
Effic
ienc
y (%
), sa
tura
tion
40
45
50
55
60
65
70
Uklystron (kV)90 95 100 105 110 115
Pou
t (M
W),
satu
ratio
n2
3
4
5
6
7
8
9
10
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Thales MBK
Factory data18.08.2009
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Test results
Both of tested klystron full meet to DESY specificationWe can work on the level of 5 MW power in the one of arm without SF6, (Dry air flow~70 l/min and overpressure of 0.35bar), BDR~5*10-6 , now limited by loads and bellowsWe have new type of very high efficiency tubes, and we don’t have much time to get experience of tube operation before we will put these tubes in XFEL tunnel for ~20 years.
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Klystron protection and Klystron Life Time
Factors which can reduce the lifetime of the tube:Bad vacuum: ions’ current, RF and HV breakdown, reduction of cathode emissionGun arc: destruction of cathode and anode surfaces, metal evaporation what canpollute the HV insulator and cathode.RF breakdown: destruction of cavities surface, the pollution of the ceramic of RF windows. Cycles of cathode heater P/S: Thermal stress, the switch off the P/S in the bad vacuum conditionscan reduce the cathode emission. Waveguide breakdown: over voltage in RF window, shockwaves can destroy the ceramic
Maximum electric field strength on cathode ~ 60 kV/cmMaximum electric field strength in the output cavity ~ 200kV/cmMaximum electric field on the surface of output window ~ 4.7 kV/cm
Beam energy ~25.4kJ, RF energy ~15kJ
MBK 10 MW, 10 pps, 1.7 ms HV and 1.5 ms RF,is very expensive device
M type dispenser cathode with beam loading of 2.A/cm^2 can provideaverage lifetimes of 145,000 hours!
Lifetime of the tube should be in excess of 60,000 hours.Our goal:
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
World experience in operation of RF systemsСредний срок службы КИУ на ЛУЭ-2 ГэВ
0
1
2
3
4
5
6
7
8
9
1965 1969 1973 1977 1981 1985 1989 1993 1997 2001 2005
Календарный год
Дол
гове
чнос
ть, тыс.
час
.
SLS Event Logging: Experience
Л.С. Белянинова, В. Н. Борискин, Ю.Д. Тур, А.И.ХудяковНациональный научный центр «Харьковский физико-технический институт»,
ул. Академическая,1, Харьков,61108, УкраинаE-mail: [email protected]
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Connection between MBK and waveguide distribution system
Lightsensors
Westloads
RFi
n, 5
MW
RFout1, 2.5MW
RFout2, 2.5MW
Harmonicabsorbers
Forward
Reflected
Harmonics ~ -23db + HOM from beam
the volume where is 5MW power level, should be minimum.+ the length of power divider together with DC can be shortened.- New power divider with harmonics and HOM absorber need to be developed and tested
28
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Fast protection system for XFEL MBK
Main point: detect all events which can destroy the tube, as quickly aspossible, then stop input power to the tube and send signal to stop HV.The tube recovery procedure should depend on the kind of events has happened.
Impulse shape analyzer (DC) (Analog Prototype exists, needs to be improved, work in progress. )
Reflected power sensor (DC) (Prototype exists, DC needs to be improved)
Light detectors (the development is started based on the new electronics)
Sound sensors (the development is started using ultrasonic sensors)
Gun arc detector (the development is started)
X-ray sensor (the investigation is started)
Partial discharge sensor (discussion with BINP Novosibirsk, the investigation is started)
Vacuum tube measurement (Prototype exists, needs to be improved.)
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Block diagram of fast protection system
τ1
ττ=25 nSec
maintrigger
directionalcoupler
RF switchercontrol
Fast channel
Window or tubebreakdown
Waveguidebreakdown
0.5 – 5 Sec
Att1300MHzoscillator
Main trigger
tube vacuum
waveguides pressureor air flower
Light
sensor
X-raysensor
Light
sensor
Klystron protection
fastchannel
slowchannel
Protection level
Protectionlevel, recoverytime, delay, status…
Sound sens.
Preamp.
Interlock
Gun arcsensor
Stop mod.
Partialdischarge sensor
Klystron ready
Stop cathodeheater p/s
5 – 15 SecCondition betweennormal pulses
30
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFELdirectional coupler is one of important devices
~88%over voltage
~20%over voltage
after modification
Many of them are used in FLASH and in PITZ. DC has attenuation about 60 db, directivity more than of 40db and enough wide bandwidth, but not in 5 MW power level!
(S.P.A. Ferrite Ltd St. Petersburg)
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Pulse shape analyzer
τ1
τ2
maintrigger
Crystal detectorafter DC
ShapeAnalyzerdP/dt
Protection level
blank impulse
Without shape analyzer
With shape analyzer
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Examples of fast protection system working
Breakdown with arcRecovery time several minutes
Breakdown without arcRecovery time several seconds
Forward WEST
Forward OST
Reflection WEST
Reflection OST
Signal from Light detector
Input power
Reflection OSTlogarithmic detector
Reflection OSTdiode detector
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Waveguide breakdowns in the stage of arcing and in the stage of pre-breakdown
Stage of arc
Stage of prebreakdowng
Input power
Signal from Light detector
Forward WEST
Forward OST
Reflection OST
Reflection WEST
Switch off in the stageof the pre-breakdown,
without shockwave
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Preparation to the harmonic level measurement
SMA connector as an antenna• Cheap• good reproducible • Low disruption
PC
64Relays
Unit
Phase Measurement
Unit
Reference
LevelMeasurement
Unit
Control
AD
AD
Relays Unit with HF coax relays• high Isolation • high Input Level
Measurement of• 1.3 GHz • 2.6 GHz 1.harmonic• 3.9 GHz 2.harmonic• 5.2 GHz 3.harmonic• 6.5 GHz 4.harmonic
Timing
WR650
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XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Plans for 2009
August - October 2009: Continue test of CPI MBKSeptember-October 2009: Thales MBK testSeptember-November 2009: Connection module + HV cable testOctober 2009: Start operation in 30 Hz PRRNovember 2009: Start measurement of harmonics levelNovember-December 2009: discussion with companies, modification of specification and preparation for call of tender for MBK for XFELKlystron Life Time (KLT): build in, the present fast protection system, to the DOOC system (together with MSK)
36
XFEL Project meeting, DESY, August 19, 2009V. Vogel (DESY - MHF-p)
Status of horizontal MBK for XFEL
Thank you for yours attention!