Jenne, Sheila, Ed Daw, Jim

Earlier today we had an alignment that was far off enough that we couldn't engage the ASC with the normal sequence.  This might have been due to the IM move, which was to restore us to the IM positions before the week long maintenance when the cameras were also moved.  Jenne moved PR3 and PRM by hand as she slowly reduced the offsets in the soft loops.  Once this was done and all ASC loops were sucsesfully engaged, we reset the green QPD offsets and updated the green camera offsets.  Jim did an inital alingment with these new references and we locked with a high recycling gain and the error signals were relatively close to zero.  

We are again using the SRC1+2 loops during the whole CARM offset reduction sequence.  

We powered up to 10 Watts and again noticed that the X arm soft motion is not well controlled.  We looked at XTR A as a possible problem, the power on the QPD does not scale correctly as we increase power.  (The other QPDs all scale the same was a POP DC).  We tried taking this out of the loop, but saw the same problem when we powered up.  We then looked at the combination of TMS QPDs that is insensitive to DHARD, with the idea that our problem might be a cross coupling from HARD to soft.  We can try this tomorow, the input matrix is in the screenshot attached.  

We noticed that there was a model restart where the safe.snap was restored on March 14th, and that we still had bad values due to this.  It would be good if people consider restoing the settings to a reasonable state as part of the job of doing a model restart.  (ie, make sure you are not leaving a lot of settings changed when you do model restarts tomorow and in the future please...)