ILC Cryomodule Vibration Measurements September 6, 2006 Mike McGee AD/Accelerator Physics Department (APD) Meeting.

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Presentation transcript:

ILC Cryomodule Vibration Measurements September 6, 2006 Mike McGee AD/Accelerator Physics Department (APD) Meeting

Vibration Measurement Example  Vertical & Horizontal piezoelectric accelerometers mounted on Capture Cavity 2 cold mass For Cryogenic service Radiation shields  External measurements made using Geophones Mike McGee, 6 Sep 2006 APD Meeting

Environment Measurement Process Mike McGee, 6 Sep 2006 APD Meeting Floor Seisometer Cryostat Geophone Amplifier & A/D Laptop Data logger

Cold Mass Measurement Process Mike McGee, 6 Sep 2006 APD Meeting Cold Mass Accelerometer Amplifier & A/D Laptop Data logger Signal Conditioner & Low Pass Filter

Environment & Cold Measurement Analysis Mike McGee, 6 Sep 2006 APD Meeting

Demonstration Mike McGee, 6 Sep 2006 APD Meeting

Demonstration Mike McGee, 6 Sep 2006 APD Meeting

Courtesy of DESY High Sensitivity Instrumentation Mike McGee, 6 Sep 2006 APD Meeting

Courtesy of DESY Cryogenic Instrumentation Mike McGee, 6 Sep 2006 APD Meeting

Courtesy of DESY Baseline (Floor) Instrumentation Mike McGee, 6 Sep 2006 APD Meeting

Courtesy of DESY General Purpose Instrumentation Mike McGee, 6 Sep 2006 APD Meeting HS-1 Geophone HS-1 Specifications SPECIFICATION at 25°C, Geophone in designated operating position (Vertical or Horizontal) Natural Frequency (Fn)4.5 ±.75 Hz7.5 ±.75 Hz10 ± 1.0 Hz DC Coil Resistance (DCR), ohms 225 ± ± ± ± ± ± ± ± ± 62 Sensitivity (G), ± 10% V/in/s Sensitivity (G), ± 10% V/cm/s Open Circuit Damping (Bo), ± 20% Damping Constant (C D ) Coil Mass (M), grams ± 5% Maximum Tilt AngleVertical Models Horizontal Models 15° ± 2° Vertical Models Horizontal Models 20° ± 3.5° Vertical Models Horizontal Models 30° ± 7.5°

Courtesy of DESY Instrumentation Electronics Mike McGee, 6 Sep 2006 APD Meeting

Courtesy of DESY Capture Cavity 2 (Meson-Fermilab) Mike McGee, 6 Sep 2006 Measurements by C. Boffo et al. APD Meeting

DESY Vibration Measurements Mike McGee, 13 Jul 2006 T4CM Design Meeting #2