Reports until 20:04, Wednesday 24 August 2011
H2 SUS
jeffrey.kissel@LIGO.ORG - posted 20:04, Wednesday 24 August 2011 (1293)
6 Isolation Stages and Counting!!
B. Bland, J. Garcia, J. Kissel, T. Sadecki

Using 3 of the 199" D1000225 that landed at LHO, we've connected up the TOP stages (M0, R0) of H2SUSITMY for the first time since mating, the satellite amplifier swap, and a whole ton of infrastructure changes (most notably the watchdog -- see subsequent eLOG by Koji).

All OSEMs appear functional. Because of the gain change in the satellite amplifier gain change, we had to remeasure the open light current (OLC) of the PDs using the ADC. At first glance, all OSEMs show counts *under* the 32768. Will post details later. We then record OLC, and installed the appropriate offset using
/ligo/svncommon/SusSVN/sus/trunk/QUAD/H2/ITMY/Common/MatlabTools/getWhiteCounts.m 

After then re-engaging the OSEMs back to half light, we freed up the suspension. 

After running
/ligo/svncommon/SusSVN/sus/trunk/QUAD/H2/ITMY/Common/Scripts/prepare_H2SUSITMY_20110819.m
which restored a few incorrect MEDM values, and easyquacking in bandlimiting filters to the AC coupled OSEM wathcdogs, we were able to get damping loops running.

Rich is taking a long high-frequency measurement of the now free ISI overnight (of which I've sat through watching the QUAD for a few hours now), and there appears to be no obvious effects on the QUAD (makes sense -- > 100 Hz measurment, at least 1 stage of passive isolation in between, suspension works!).

Will post more details later. Struggling to commission the BSFM01 at the same time; running out of time to write aLOGs.