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TDR Part 1: 3.4 Cavity Integration (15pages)

TDR Part 1: 3.4 Cavity Integration (15pages). Write-up is not yet started, but plans are presented. H. Hayano. Write-up contents will be;. Tuner R&D Blade tuner development (INFN papers) detail description of S1-Global tuner studies (from S1-G report)

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TDR Part 1: 3.4 Cavity Integration (15pages)

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  1. TDR Part 1: 3.4 Cavity Integration (15pages) Write-up is not yet started, but plans are presented. H. Hayano

  2. Write-up contents will be; Tuner R&D Blade tuner development (INFN papers) detail description of S1-Global tuner studies (from S1-G report) (2) Coupler R&D XFEL coupler development (DESY papers) KEK coupler development (KEK papers) detail description of S1-Global tuner studies (from S1-G report) (3) Magnetic shield R&D KEK magnetic shield test (KEK papers)

  3. (1) Tuner at S1-Global FNAL cavity KEK-type1 cavity Slide-jack tuner Blade tuner TTF-III coupler KEK coupler

  4. blade tuner Slide-jack tuner Slide-jack tuner: stuck by slide-slope bending Blade tuner: slip on gear connection

  5. Blade-tuner: two piezo Slide-jack: one piezo Slide-jack: one piezo variation within Slide-jack

  6. Half-sine-wave pulse response both slide-jack

  7. Lorentz Force Detuning Compensation Slide-jack-tuner at 38MV/m Blade-tuner at 25.6MV/m LFD coefficient: k

  8. (2) Coupler KEK STF Coupler TTF-III Coupler

  9. coupler assembly TTF-III Coupler: various support jigs are required. KEK STF Coupler:self standing

  10. QL of Variable Input Coupler QL = 2.4 x 106 D fbw = 542 Hz Cryomodule – A (STF-2 couplers) Cryomodule – C (TTF-III couplers) 2.4 X 106 TTC meeting in Beijing

  11. RF Processing Time of Input Couplers at room temperature Cryomodule-A (STF-2 couplers) ave. processing time ~ 13 hours 20 hr Cryomodule-C (TTF-III couplers) ave. processing time ~ 21 hours 20 hr . Vacuum I/L ; 2.x10-4 Pa TTC meeting in Beijing

  12. Operational RF power level for 8-cavity operation Stable operating Eacc (individual cavity operation) Calc.ave. Eacc C : 24 MV/m A : 28 MV/m C&A : 26 MV/m 0.5 ms 1.0 ms After warm-up to an intermediate temperature due to the trouble of cryogenic system, deterioration of vacuum pressure was suddenly occurred in A1 coupler, and operational RF power level was reduced. TTC meeting in Beijing

  13. coupler heat-loss measurement at S1-G from N. Ohuchi, et al “Thermal performance of the S1-Global cryomodule for ILC”, IPAC11 Static loss static loss : KEK couplers > TTF-III couplers Dynamic loss MC: module-C (DESY, FNAL cavities) MA: module-A (KEK cavities) KEK couplers TTF-III couplers Dynamic loss : KEK couplers > TTF-III couplers

  14. (3) Magnetic shield Magnetic Shields of KEK Cavities 4 Components per 1 KEK Cavity For 2 KEK Cavities TTC meeting in Beijing

  15. Calculation of Magnetic Fields in KEK Cavity by N. Ohuchi (KEK) TTC meeting in Beijing

  16. Tests of Magnetic Fields in KEK Cavity (1) TTC meeting in Beijing

  17. Tests of Magnetic Fields in KEK Cavity (2) TTC meeting in Beijing

  18. Tests of Magnetic Fields in KEK Cavity (3) Qo measurement by dynamic rf losses in cryomodule (STF-1) Effect of magnetic shields Deterioration due to field emission TTC meeting in Beijing

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