LIGO Document T1800503-v2

Thoughts on Damping the Sidles-Sigg torques on the Testmass

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T - Technical notes
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Some calculations related to a proposal. Is it possible to damp the ~3 Hz Sidles Sigg mode by sensing a local TM and driving the PUM. seems like is it possible.
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Notes and Changes:
adds BTL section on calc included in proposal
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