cheryl.vorvick@LIGO.ORG - posted 11:18, Monday 29 February 2016 - last comment - 08:31, Wednesday 02 March 2016(25781)
IM2 (PMMT1) oscillating after Satellite module fix
IM2 position is now oscillating by 5urad in pitch and yaw after satellite module fix on Feb. 23.
Three plots attached:
- Time series showing it working briefly then going into oscillation
- power spectrum of all IM2 OSEM inputs - high res, 0-7000Hz
- power spectrum of all IM2 OSEM slow channels - 0-100Hz, showing a 10Hz comb
Images attached to this report
Comments related to this report
That Sat amp doesn't qualify as fixed at this point. The modification is not currently installed. See Richard McCarthy for details.
3/1/2016 The modification has been added.