lisa.barsotti@LIGO.ORG - posted 22:10, Wednesday 23 January 2013 - last comment - 12:10, Thursday 24 January 2013(5237)
IMC is locked again
All
The repaired LSC RFPD has been re-installed on IOT2, and we could relock the IMC easily. We measured the OLTF of the fast loop: we have a 60 kHz UGF and 40 degrees of phase margin (measured with the 730 kHz notch ). Details will follow.
Comments related to this report
lisa.barsotti@LIGO.ORG - 12:10, Thursday 24 January 2013 (5244)
The first picture shows a comparison of the OLTF with and without the notch. At 60 kHz we lose 7 degrees of phase with the notch in. The second picture shows where the notch box is, and the third picture shows the MEDM screens with the standard gain settings.