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E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 1 Low Power RF Tests (3) in S1-G.

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Presentation on theme: "E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 1 Low Power RF Tests (3) in S1-G."— Presentation transcript:

1 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 1 Low Power RF Tests (3) in S1-G

2 E. KAKO (KEK) 2010' July 27 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

3 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 3 Mechanical Vibration Modes (Cryo-A) A1/MHI-05A2/MHI-06 A3/MHI-07A4/MHI-09 Pt  Vpiezo 10 o /div. 500V 250V 5 Hz 250 Hz 5 pulse 250 Hz 5 pulse 250 Hz 5 pulse 250 Hz 5 pulse Pt  Vpiezo

4 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 4 Mechanical Vibration Modes (Cryo-C) C1/AES004C2/ACC011 C3/Z108C4/Z109 Pt  Vpiezo 10 o /div. 25 o /div. 10 o /div. 25V 5 Hz 250 Hz 5 pulse 250 Hz 5 pulse 250 Hz 5 pulse 250 Hz 5 pulse Pt  Vpiezo

5 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 5 Mechanical Vibration Modes (Cryo-A&C) CW mode measurementSingle-pulse mode measurement C4/Z109: Vpiezo = +40V, 1kHz A2/MHI-06: Vpiezo = +200V, 1kHz 5 o /div. FFT Analysis FFT Analysis 100ms/div. 4ms/div. Vpiezo = +100V, 100Hz, cw A4/MHI-09: Pt   Frequency sweep, manually

6 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 6 Mechanical Vibration Modes (Cryo-A) Vpiezo = +200V (CW) 536Hz 351Hz 246Hz Vpiezo = +200V, 1 kHz (1 pulse) 227Hz 318Hz521Hz 378Hz 535Hz 516Hz 323Hz 225Hz A1/MHI-05 A2/MHI-06

7 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 7 Mechanical Vibration Modes (Cryo-A) Vpiezo = +200V (CW) 206Hz 298Hz Vpiezo = +200V, 1 kHz (1 pulse) 571Hz 382Hz 330Hz 326Hz 459Hz 561Hz 194Hz 297Hz A3/MHI-07 A4/MHI-09

8 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 8 Mechanical Vibration Modes (Cryo-C) Vpiezo = +15V (CW) 201Hz 354Hz 504Hz 345Hz 168Hz126Hz 529Hz Vpiezo = +40V, 1 kHz (1 pulse) 345Hz 179Hz 509Hz 356Hz 204Hz C1/AES004 C2/ACC011

9 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 9 Mechanical Vibration Modes (Cryo-C) Vpiezo = +15V (CW) 320Hz 261Hz 246Hz 332Hz Vpiezo = +40V, 1 kHz (1 pulse) 260Hz 322Hz 448Hz 245, 252Hz 313Hz 436Hz C3/Z108 C4/Z109

10 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 10 Mechanical Vibration by Hammer C1/AES004 (FNAL)C3/Z108 (DESY) A1/MHI-05 (KEK)A4/MHI-09 (KEK) 5 o /div. 10 o /div. 100ms/div.

11 E. KAKO (KEK) 2010' July 27 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 127Hz 112Hz 298Hz

12 E. KAKO (KEK) 2010' July 27 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) 10 o /div. 250Hz, 40V 200Hz, 40V 330Hz, 400V 535Hz, 400V A1 A2 C3C1 A3 A4 C2C4 100ms/div. 1 o /div.

13 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 13 Microphonic vibration A1/MHI-05 (KEK)A3/MHI-07 (KEK) C1/AES004 (FNAL)C3/Z108 (DESY) 222Hz326Hz 25Hz252Hz

14 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 14 TESLA-like Cavity (KEK) STF-1 experiment Analysis of Mechanical Vibration Modes

15 E. KAKO (KEK) 2010' July 27 meeting Global Design Effort 15


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