jlab overview cryomodule results · 2004-01-28 · \\fs1\proj_mgmnt\presentations 1-rode_04_1-21...

$: JLab Overview Cryomodule Results · 2004-01-28 · \\Fs1\Proj_Mgmnt\Presentations 1-Rode_04_1-21 Berlin FY03 MB Cavity Qualification Problems 1. 3 month poor cavity performance (Mar$
SNS Linac 1\\Fs1\Proj_Mgmnt\Presentations 1-Rode_04_1-21 Berlin

JLab Overview &

Cryomodule Results

C. H. RODEJLAB Senior Team Leader

January 21, 2004


Outline

• JLab scope

• 1-Oct-03 Cryomodule Snapshot

• 15-Jan-04 Cryomodule Snapshot

• FY04 & 05 JLab High Level Plan

• J. Mammosser: MB Cavity qualification and string assembly sequence


SNS Deliverables• 2 year R&D Program

• 11 Medium beta 3-cavity cryomodules

• 12 High beta 4-cavity cryomodules

– Feb-01 to Aug-03 high gradient development program (Epeak = 27.5 =>35.0 MV/m) for high beta cryomodules

• 120 g/sec Central Helium Liquefier

• Dual tee shaped transfer lines

• SRF 5 cryomodules/yr. facility – design only

90.8% complete (1-Jan-04)


SNS Medium Beta Cryomodule


FY03 MB Cavity Qualification Problems

1. 3 month poor cavity performance (Mar – May 03)2. High reject rate (Jan – Aug 03)

3. Component qualification and cryomodule testing delayed due to 1 MW RF system availability

4. Production interruptions due to equipment failures and Mother Nature

5. Very little correlation exists between CW VTA test and pulsed cryomodule test

6. $70K/month cost variance


SNS Medium Beta CM & Vertical Dewar Testing Eacc @ Qo = 5*10**9

0

2

4

6

8

10

12

14

16

18

20

1-Nov-02

1-Dec-02

1-Jan-03

31-Jan-03

3-Mar-03

2-Apr-03

3-May-03

2-Jun-03

3-Jul-03 2-Aug-03

2-Sep-03

2-Oct-03

2-Nov-03

2-Dec-03

2-Jan-04

Eacc

EaccA. Spec.Min. S.Max. S.MB1MB2MB3MB4MB5MB6MB7MB8MB9MB10MB11RejectCM


VTA Cavity Qualification

0

1

2

3

4

5

6

7

8

Nov-02

Dec-02

Jan-03

Feb-03

Mar-03

Apr-03

May-03

Jun-03

Jul-03

Aug-03

Sep-03

Oct-03

Nov-03

Dec-03

Jan-04

Feb-04

Mar-04

#

HB EP Pass

HB BCP Pass

MB Pass

Requirement

HPRFailure

Hurri-caneIsabel

Includes 3 Cavities that required retesting due to follow up


MB Cavity Performance CM vs VTA

0

2

4

6

8

10

12

14

16

18

0 2 4 6 8 10 12 14 16 18

VTA MV/m

CM

MV/

m

INITIAL TEST


1 MW RF System

• 1 MW RF fifth & sixth failure with this klystron

– Operating with solenoid ground fault – repair plan exists

– Operating with klystron water leak – pressure dependent


FY04 Problems

• 17-Sep Hurricane Restart– 4 weeks to restart

• 15-Nov HPR pump failure– 2 weeks off

• 15-Jan HPR pump failure– 2 weeks off


Cryomodule Production Status

M-1-6 CM – in tunnel position #2 thru #7

M-7 CM – vacuum leak

M-8 CM – assembled

M-9 CM – being assembled

M-10, 11 Cavities qualified

H1 Cavities qualified

H-2,3 Cavities being qualified

H-4,5,6 Cavities being prepped

H-7,8 Cavities being incoming inspected


Cryomodules in SNS Tunnel


Cryomodules M4, thru M8 & FEL3


SNS M7 Cryomodule in Cave


SNS Medium Beta CM Eacc @ Qo = 5*10**9

0

2

4

6

8

10

12

14

16

18

20

1-Nov-02

1-Dec-02

1-Jan-03

31-Jan-03

3-Mar-03

2-Apr-03

3-May-03

2-Jun-03

3-Jul-03

2-Aug-03

2-Sep-03

2-Oct-03

2-Nov-03

2-Dec-03

2-Jan-04

Eacc

A. Spec.

Min. S.

Max. S.

CM

VTA Qualifications Date


Cryomodule M4, M5, M6 Test Results

109

1010

1011

0 5 10 15 20

MBspecHBspecM4-01M4-02M4-03M5-01M5-02M5-03M6-01M6-02M6-03

Eacc


MB Cavity Performance CM vs VTA

0

2

4

6

8

10

12

14

16

18

0 2 4 6 8 10 12 14 16 18

VTA MV/m

CM

MV/

m


JLab Superconducting Conclusions

• Cryomodule– Cavity qualification is currently >1 months ahead of plan

new procedure 86% success– MB cavity string assembly is currently at ~15 days/CM– Cryomodule assembly efficiency is steadily improving;

currently at ~35 days/CM (2 rails)

• Refrigeration– All hardware has been delivered to ORNL; installation

>99%– Check out and commissioning:

– Screw compressors: operational– 4.5K Cold box: purification Feb– 2.1K Cold box: cold compressors installed


CM Assembly

9

21

33

45

57

69

81

17-O

ct-03

31-O

ct-03

14-Nov-0

328

-Nov-03

12-D

ec-03

26-D

ec-03

9-Jan

-0423

-Jan-04

6-Feb-0

420

-Feb

-045-M

ar-04

19-M

ar-04

2-Apr-0

416

-Apr-0

430

-Apr-0

414

-May

-0428

-May

-0411

-Jun-04

25-Ju

n-049-J

ul-04

23-Ju

l-04

6-Aug-04

20-A

ug-04

3-Sep

-0417-S

ep-04

1-Oct-0

415

-Oct-

0429

-Oct-

0412

-Nov-0

426-N

ov-04

10-D

ec-04

24-D

ec-04

7-Jan

-0521

-Jan-05

Cav

ity #

5

8

11

14

17

20

23

Cavity PlanCavity ActualStrings Plan Strings ActualCM PlanCM ActualsMB CM #

NOW

jlab overview cryomodule results · 2004-01-28 · \\fs1\proj_mgmnt\presentations 1-rode_04_1-21...

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