jason.oberling@LIGO.ORG - posted 11:22, Tuesday 24 November 2015 (23702)
H1 PSL FSS Maintenance
J. Oberling, P. King, E. Merilh
Over the weekend the FSS RefCav TPD dropped from ~1.4V to ~1.0V, so we went in to realign it. This was all done with the ISS off. Results:
- TPD: 1.52 V
-
RPD
- FSS Locked: 44 mV
- FSS Unlocked: 251 mV
- Visibility: 82.5%
The alignment was recovered entirely with a pitch adjustment of the RefCav input periscope mirrors. This completes LHO work permit #5622.