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Latest Data from the Basement Anelastic Relaxation Facility

Latest Data from the Basement Anelastic Relaxation Facility. Phil Willems Jaap Weel Hanford LSC meeting, 2001. Suspensions Apparatus. Automated fiber pulling lathe. Q-measurement rig. Mode frequencies well fit by uniform model. Measured data Fit of model to data.

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Latest Data from the Basement Anelastic Relaxation Facility

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  1. Latest Data from the Basement Anelastic Relaxation Facility Phil Willems Jaap Weel Hanford LSC meeting, 2001

  2. Suspensions Apparatus Automated fiber pulling lathe Q-measurement rig LIGO R&D

  3. Mode frequencies well fit by uniform model • Measured data • Fit of model to data LIGO R&D

  4. Independent Measurement of Dilution Factor For violin mode of fiber at thermoelastic strain point, (df/dT)/f=(dE/dT)/2ED where D is the dilution factor. LIGO R&D

  5. Measured vs. Predicted Dilution Factors • Measured data • Prediction (df/dT)/f=(dE/dT)/2ED LIGO R&D

  6. Ringdown of 1st Harmonic f=1561 Hz Q=4.2e8 LIGO R&D

  7. Measured Q’s, very preliminary • Measured data • Model with NTE • Model without NTE LIGO R&D

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