Performance of Slide-jack tuner in STF-2 Cryomodule

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Presentation transcript:

Performance of Slide-jack tuner in STF-2 Cryomodule w/ Piezo Performance of Slide-jack tuner in STF-2 Cryomodule Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC Kirk

Specification of Tuner/Piezo in STF-2 Tuner type Slide-jack # of Tuner/Piezo 12 Attachment Position Center (String 1, 3) / End (String 2) Frequency range ~530kHz Cavity expansion ~2.2mm Piezo Max. voltage 1000V (500V@opr.) >200Hz Tuner Piezo center type end type Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC

Cavity/Tuner combination in CM1/CM2a Module CM1 CM2a String # 1 2 3 Cavity # 4 5 6 7 8 9 10 11 12 Cavity name MHI-14 MHI-15 MHI-17 MHI-18 MHI-19 MHI-20 MHI-21 MHI-22 MHI-24 MHI-23 MHI-25 MHI-26 Tuner type center End Piezo common type MHI-14 MHI-15 MHI-17 MHI-18 MHI-19 MHI-20 MHI-21 MHI-22 MHI-24 MHI-23 MHI-25 MHI-26 BPM/Quadrupole Cavity string 1 Cavity string 2 Cavity string 3 Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC

Inspection/Assembly/Drive check Incoming inspection  assembly work  Drive check/measurement Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC

Every tuner enables cavity to set 1.3GHz exactly. Tuner drive test at 2K Every tuner enables cavity to set 1.3GHz exactly. Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC

Piezo drive test at 2K 500V 0V ! 500V 0V Piezo #4 did not work properly due to discharge trouble. The other eleven piezo worked very well. Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC

Replacement of Piezo in Cryomodule After this trouble, we replaced Piezo. Dec/3/2015 WG4 in TTC Meeting 2015 @SLAC