1. 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
Kirk

2. 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
>200Hz
Tuner
Piezo
center type
end type
Dec/3/2015
WG4 in TTC Meeting

3. 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

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

5. 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

6. 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

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