40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Mon Jul 8 15:31:48 2013, Jenne, Update, ASC, POP QPD calibration prep 
    Reply  Tue Jul 9 11:41:22 2013, Jenne, Update, ASC, POP QPD calibration attempt 
       Reply  Tue Jul 9 16:08:32 2013, Jenne, Update, ASC, POP QPD calibration attempt 
          Reply  Fri Jul 12 21:23:42 2013, Jenne, Update, ASC, POP QPD calibration attempt ChangeVertMicrometer_July2013.pngChangeSideMicrometer_July2013.png
             Reply  Mon Jul 15 17:16:59 2013, Jenne, Update, ASC, POP QPD calibration attempt ChangeSideMicrometer_July2013_calib2.pngChangeSideMicrometer_July2013_calib1.pngChangeVertMicrometer_July2013_calib1.png
                Reply  Tue Jul 16 01:17:21 2013, Jenne, Update, ASC, POP QPD calibration attempt 
                   Reply  Tue Jul 23 01:30:27 2013, Jenne, Update, ASC, POP QPD analysis 9x
                      Reply  Fri Jul 26 13:39:30 2013, Koji, Update, ASC, POP QPD analysis 
Message ID: 8851     Entry time: Mon Jul 15 17:16:59 2013     In reply to: 8840     Reply to this: 8854
Author: Jenne 
Type: Update 
Category: ASC 
Subject: POP QPD calibration attempt 

I tried to retake POP QPD calibration data again today.  The MC was mostly fine, but whenever the PRMI unlocked, both ITM watchdogs would trip.  I'm not sure what was causing this, but the ITM alignment wasn't perfect after this kind of event, so I felt like I was continuously locking and realigning the arms to get the alignment back.   Then, after turning on the ASC and tweaking up the PRM alignment for maximum POP110I signal, I had to recenter the QPD, so none of my previously taken data was useful.  Frustrating.  Also, I had recentered the PRMI-relevant oplevs, but I had these weird locklosses even with nicely centered oplevs.

I have given up for the daytime, and will come back to it if there's a spot in the evening when arm measurements aren't going on.

Here is the data from last week, and the data from today.  The micrometer readings have been calibrated into mm, and I have fit a line to the linear-looking region.  Obviously, for the Pitch calibration, I definitely need to take more data.

ChangeSideMicrometer_July2013_calib2.png

ChangeSideMicrometer_July2013_calib1.png

ChangeVertMicrometer_July2013_calib1.png

ELOG V3.1.3-