LIGO Document T080028-v1

Lateral blade movement in clamps Experiment

Document #:
Document type:
T - Technical notes
Other Versions:
11 Feb 2009, 23:44
During alignment procedures on the quad, it was found that pitching the top and UI masses caused permanent pitch changes at the test mass. It was felt that this may be
related to permanent lateral displacement of the blades tips. We could not produce a sideways set of the blades with the lateral forces that would be produced at the blade tip by a tilt, wiht any feasible value of clamp-bolt torque
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Notes and Changes:
This is one document of several exploring hysteresis and alignment issues in the quad pendulum. See related documents for the other documents in this study.

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