ELOG - Switching on the IGM moves the disk

Coating Ring-down Measurement Lab elog

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Message ID: 195 Entry time: Thu Nov 17 12:06:39 2016

Author:	Gabriele
Type:	General
Category:	Vacuum
Subject:	Switching on the IGM moves the disk

Here's a trend of the QPD signals when the IGM was turned on:

Turning it off does not bring the disk back.