e. kako (kek) 2010' july 27 s1-g@webex meeting global design effort 1 low power rf tests (3) in...
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E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
1
Low Power RF Tests (3) in S1-G
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
2
Low power rf tests in S1-G
Cryomodule-A&C. Damping of mechanical vibration modes (1 & 5 pulse, 5 Hz). Mechanical vibration (cw mode meas.). FFT analysis of mechanical vibration. Cross-talk of vibration between two cavities
Measurement time at 2 K ; Tue. – Fri. for 4 days 13:00 ~ 19:00 for 6 h 24 h per week
Cryomodule-A&C. HOM external Q
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
3
Mechanical Vibration Modes (Cryo-A) A1/MHI-05 A2/MHI-06
A3/MHI-07 A4/MHI-09
Pt
Vpiezo
10o/div.
10o/div. 10o/div.
10o/div.
500V
500V
250V
250V
5 Hz
5 Hz5 Hz
5 Hz
250 Hz5 pulse
250 Hz5 pulse
250 Hz5 pulse
250 Hz5 pulse
Pt
Vpiezo
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
4
Mechanical Vibration Modes (Cryo-C) C1/AES004 C2/ACC011
C3/Z108 C4/Z109
Pt
Vpiezo
10o/div.
25o/div. 25o/div.
10o/div.
25V
25V
25V
25V
5 Hz
5 Hz5 Hz
5 Hz
250 Hz5 pulse
250 Hz5 pulse
250 Hz5 pulse
250 Hz5 pulse
Pt
Vpiezo
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
5
Mechanical Vibration Modes (Cryo-A&C)
CW mode measurement Single-pulse mode measurement
C4/Z109: Vpiezo = +40V, 1kHz
A2/MHI-06: Vpiezo = +200V, 1kHz
5o/div.
5o/div.
FFTAnalysis
FFTAnalysis
100ms/div.
100ms/div.
4ms/div.
Vpiezo = +100V, 100Hz, cw
A4/MHI-09:
Pt
Frequency sweep, manually
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
6
Mechanical Vibration Modes (Cryo-A)
A1 (MHI#5)
0
200
400
600
800
1000
1200
1400
1600
1800
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
Vpiezo = +200V (CW)
536Hz
351Hz246Hz
Vpiezo = +200V, 1 kHz (1 pulse)
A2 (MHI#6)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
227Hz
318Hz 521Hz
378Hz
535Hz
516Hz
323Hz
225Hz
A1/MHI-05
A2/MHI-06
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
7
Mechanical Vibration Modes (Cryo-A)Vpiezo = +200V (CW)
A4 (MHI#9)
0
500
1000
1500
2000
2500
3000
3500
4000
4500
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
206Hz
298Hz
Vpiezo = +200V, 1 kHz (1 pulse)A3 (MHI#7)
0
500
1000
1500
2000
2500
3000
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
571Hz382Hz
330Hz 326Hz
459Hz561Hz
194Hz
297Hz
A3/MHI-07
A4/MHI-09
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
8
C2 (ACC011)
0
100
200
300
400
500
600
700
800
900
1000
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]C1 (AES004)
0
200
400
600
800
1000
1200
1400
1600
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
Mechanical Vibration Modes (Cryo-C)Vpiezo = +15V (CW)
201Hz
354Hz
504Hz
345Hz
168Hz126Hz
529Hz
Vpiezo = +40V, 1 kHz (1 pulse)
345Hz179Hz
509Hz356Hz
204Hz
C1/AES004
C2/ACC011
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
9
C4 (Z#109)
0
500
1000
1500
2000
2500
3000
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
C3 (Z#108)
0
500
1000
1500
2000
2500
3000
0.0 100.0 200.0 300.0 400.0 500.0 600.0
Piezo Freq. [Hz]
Δψ
pp [
mV
]
Mechanical Vibration Modes (Cryo-C)Vpiezo = +15V (CW)
320Hz
261Hz
246Hz
332Hz
Vpiezo = +40V, 1 kHz (1 pulse)
260Hz
322Hz
448Hz
245, 252Hz
313Hz436Hz
C3/Z108
C4/Z109
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
10
Mechanical Vibration by Hammer
C1/AES004 (FNAL) C3/Z108 (DESY)
A1/MHI-05 (KEK) A4/MHI-09 (KEK)
5o/div.
5o/div.
10o/div. 10o/div.
100ms/div. 100ms/div.
100ms/div. 100ms/div.
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
11
Mechanical Vibration by Hammer
C1/AES004 (FNAL) C3/Z108 (DESY)
A1/MHI-05 (KEK) A4/MHI-09 (KEK)
194Hz
250Hz
127Hz112Hz
298Hz
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
12
Propagation of Mechanical Vibration
Pt
Vpiezo
Pt
Vpiezo
A1/A2 (KEK)
C3/C4 (DESY)C1/C2 (FNAL)
A3/A4 (KEK)
10o/div.10o/div.
10o/div. 10o/div.
10o/div.10o/div.
10o/div.
10o/div.
250Hz, 40V200Hz, 40V
330Hz, 400V535Hz, 400V
A1
A2
C3C1
A3
A4
C2 C4
100ms/div. 100ms/div.
100ms/div. 100ms/div.
1o/div.
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
13
Microphonic vibration A1/MHI-05 (KEK) A3/MHI-07 (KEK)
C1/AES004 (FNAL) C3/Z108 (DESY)
222Hz 326Hz
25Hz 252Hz
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
14
TESLA-like Cavity(KEK)
STF-1 experiment
Analysis of Mechanical Vibration Modes
E. KAKO (KEK) 2010' July 27 S1-G@Webex meeting
Global Design Effort
15