Report on SRF Work-packages 7 - 11
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Transcript of Report on SRF Work-packages 7 - 11
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CARE SC meeting, CERN, 13th September, 2006.
Report on SRF Work-packages 7 - 11
WP7 Power CouplersWP8 TunersWP9 Low level RFWP10 Horizontal Cryostat IntegrationWP11 Beam Diagnostics
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CARE SC meeting, CERN, 13th September, 2006.
Power Couplers
• Task 7.1 New proto-types– “All-brazed” couplers received from CPI
following TiN coating (just last week).– 2 TTF-V couplers received prior to summer
vacation. Not centered on 1300 MHz! S11 is only 11 dB.
– Second pair of TTF-V couplers had window coating problem. They will be re-coated.
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CARE SC meeting, CERN, 13th September, 2006.
Top right: TTF-V windowTop left: TW60 windowBottom: Wave-guide test box.
Insufficient TiN coating
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CARE SC meeting, CERN, 13th September, 2006.
Power Couplers
Task 7.2 Construction of TiN coating BenchContract signed with Italian company for construction
of bench. Delivery ~ July 2007.Based on magnetron sputtering under vacuum.Tests have been performed on TiN samples coated on an alumina substrate to verify the chemical composition.
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CARE SC meeting, CERN, 13th September, 2006.
RF power as a function of time for different pulse widths.
Electron activity as a function of RF power and pulse width.
Power Couplers
Task 7.3: Coupler Conditioning Studies
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CARE SC meeting, CERN, 13th September, 2006.
Power Couplers
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CARE SC meeting, CERN, 13th September, 2006.
WP7 schedule
Nr. TaskBegin of task
End of task
finished end 05
finished April 06
7.1 New Prototype Coupler 01/01/04 15/07/06 50% 95%7.1.1 RF Simulations of Coupler 01/01/04 30/06/04 100% 100%7.1.2 Report on Simulation 30/06/04 30/06/04 100% 100%7.1.3 Detailed Engineering Drawings 01/07/04 31/12/04 100% 100%7.1.4 Engineering complete 31/12/04 31/12/04 100% 100%7.1.5 Call for tenders 03/01/05 01/04/05 100% 100%7.1.6 Prototype Fabrication in Industry 05/04/05 31/05/06 0% 95%7.1.7 Low Power tests 31/05/06 30/06/06 0% 25%7.1.8 Ready for High Power Tests 15/07/06 15/07/06 0% 0%7.2 Fabrication of TiN Coating System 03/01/05 01/12/06 0% 25%7.2.1 Mechanical design of vacuum chamber 03/01/05 29/04/05 0% 20%7.2.2 Fabrication drawings 02/05/05 30/08/05 0% 10%7.2.3 Construction of vacuum chamber 01/09/05 01/09/06 0% 0%7.2.4 Define vacuum needs 03/04/06 30/06/06 0% 50%7.2.5 Appropriation of vacuum equipment 03/07/06 30/09/06 0% 0%7.2.6 Design of electronic circuitry 01/09/05 30/03/06 0% 0%7.2.7 Fabrication of electronics in industry 03/04/06 29/09/06 0% 0%7.2.8 Installation and Test at Orsay 02/10/06 30/11/06 0% 0%7.2.9 First Window Coating 01/12/06 01/12/06 0% 0%7.3 Conditioning Studies of Proto-type Couplers 02/01/06 30/11/07 0% 10%7.3.1 Conditioning of couplers 02/01/06 30/11/07 0% 10%7.3.2 Evaluate conditioning results 04/01/06 30/11/07 0% 0%7.3.3 Final report on conditioning 30/11/07 30/11/07 0% 0%
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CARE SC meeting, CERN, 13th September, 2006.
Nr. Task Begin of
task End of
task finished
end 05 finished April 06
8.4 IN2P3 Activity 01/01/04 07/08/06 52% 85%
8.4.1 Characterize actuators/piezo-sensors at low temperature 01/01/04 21/03/05 95% 95%
8.4.2 Report on actuator/piezo sensor 21/03/05 21/03/05 60% 80%
8.4.3 Test radiation hardness of piezo tuners 01/07/04 15/08/05 100% 100%
8.4.4 Report on radiation hardness tests 15/08/05 15/08/05 50% 80%
8.4.5 Integration of piezo and cold tuner 03/01/05 06/12/05 20% 100%
8.4.6 Cryostat tests 06/12/05 03/02/06 0% 100%
8.4.7 Tests with pulsed RF 03/02/06 07/08/06 0% 100%
8.4.8 Report on IN2P3 tuner activities 07/08/06 07/08/06 0% 40%
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CARE SC meeting, CERN, 13th September, 2006.
Low Level RF
Task 9.1-Transient detector connected in ACC1Electronics improved to allow un-interrupted operation.
Task-9.2.2 On-line radiation monitor installed
No report from Work-package leader !!!
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CARE SC meeting, CERN, 13th September, 2006.
Cryostat Integration Tests
CryHoLab being shipped to main Saclaysite in summer of this year.
Seven months needed to be operational again.
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CARE SC meeting, CERN, 13th September, 2006.
Modification needed for cavity flange
WP10 Schedule
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CARE SC meeting, CERN, 13th September, 2006.
‘BPM DESY’
BPM 14ACC7
Re-entrant BPM Tests at DESY – August 2006
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CARE SC meeting, CERN, 13th September, 2006.
• Good linearity
• Apparent lack of symmetry
• Maybe due to steering magnets (saturation, residual field) ??
Summary of BPM tests in August 2006 – 1/2
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CARE SC meeting, CERN, 13th September, 2006.
• RMS resolution: ~ 40 µm (depending on beam jitter)
• Theoretical resolution: 15 µm
• Aim to improve the resolution while maintaining the dynamci range
• Remove attenuators (~ -3 dB) ---> resolution <10µm (in theory)
• Change the power mixer (input RF power ~ 16 dBm) ---> resolution < 1 µm (theoretically)
Summary of BPM tests in August 2006 - 2/2
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CARE SC meeting, CERN, 13th September, 2006.
Status of HOM Activity at FLASH
• Cavity relative misalignments measured in ACC4 and ACC5
• BPM-like resolution measured around 10 µm for position and 200 µrad for angle
• Thesis of Rita Paparella finished, examination on September 22.
• Journal publication submitted collectively to PRST-AB, this month.
Residual of the x offset prediction using the HOM analysis for cavity #5
in module #5.
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CARE SC meeting, CERN, 13th September, 2006.
Nr. TaskBegin of task
End of task
finished Apr 05
finished Jul 05
finished Aug 06
11 WP 11 BEAM DIAGNOSTICS 1/1/04 28/5/08 19%11.1 Beam position monitor 1/1/04 12/12/07 16%11.1.1 Present BPM installed in TTF module 30/6/04 30/6/04 100% 100% 100%11.1.2 Cryogenic measurements on BPM 1/7/04 6/8/04 100% 100% 100%11.1.3 Beam tests of BPM on TTF 9/8/04 3/10/05 60% 60% 90%11.1.4 Design of BPM Cavity 1/1/04 25/3/05 70% 100% 100%11.1.5 Design of BPM cavity ready 25/3/05 25/3/05 0% 100% 100%11.1.6 Fabrication of BPM Cavity 1/9/05 23/12/05 0% 0% 100%11.1.7 BMP cavity ready 23/9/05 15/2/05 0% 0% 100%11.1.8 Development of new hybrid coupler and electronics 5/7/04 5/7/05 10% 100% 100%11.1.9 Design of Digital Signal Processing 3/1/05 17/8/06 0% 80% 80%11.1.10 New BPM ready for Installation 1/1/06 31/8/06 0% 0% 100%11.1.11 Beam Tests with new BPM 2/1/06 12/12/07 0% 0% 20%11.1.12 Evaluation of BPM operation 12/12/07 12/12/07 0% 0% 0%11.2 Beam Emittance Monitor 1/1/04 28/5/08 22% 60%11.2.1 Slit width simulations 1/1/04 2/4/04 100% 100%11.2.2 Slit design 5/4/04 2/7/04 90% 100%11.2.3 Optics simulations 5/4/04 2/7/04 95% 100%11.2.4 Optics appropriations 5/7/04 15/8/05 25% 100%11.2.5 System assembly and tests 25/10/04 30/9/05 25% 100%11.2.6 Mechanical assembly at TTF 3/10/05 2/11/05 0% 100%11.2.7 Optical assembly at TTF 3/11/05 1/12/05 0% 100%11.2.8 Integration of controls into TTF 2/12/05 31/12/05 0% 100%11.2.9 Ready for beam test in TTF 31/12/05 31/12/05 0% 100%11.2.10 Beam tests at TTF 2/1/06 2/6/06 0% 100%11.2.11 Evaluate first beam test result 2/6/06 2/6/06 0% 100%11.2.12 Successive measurements 5/6/06 28/5/08 0% 0%11.2.13 Final evaluation 28/5/08 28/5/08 0% 0%
Summary of BPM tests in August 2006