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 Jan 6 18:32:17 2014, RANA, Update, IOO, MC1/3 kicked this morning at 8:30 kicked.png
    Reply  Mon Jan 6 20:52:09 2014, Jenne, Update, IOO, MC1/3 kicked this morning at 8:30 
    Reply  Tue Jan 7 10:44:13 2014, Steve, Update, IOO, MC drift 2dTrend.pngdriftNotKick.png
       Reply  Tue Jan 7 11:11:36 2014, rana, Update, IOO, MC drift 
    Reply  Tue Jan 7 16:41:08 2014, manasa, Update, IOO, WFS moving MC suspensions 2dayMCtrend.pngWFSvsMCsuspensions.png
       Reply  Tue Jan 7 17:16:04 2014, manasa, Update, IOO, MC aligned MCspots.png
          Reply  Tue Jan 7 20:57:41 2014, Jenne, Update, IOO, MC aligned 
             Reply  Tue Jan 7 23:09:10 2014, manasa, Update, IOO, MC aligned WFSdrift.png
Message ID: 9527     Entry time: Tue Jan 7 17:16:04 2014     In reply to: 9526     Reply to this: 9528
Author: manasa 
Type: Update 
Category: IOO 
Subject: MC aligned 


Edit, JCD:  What this really means is that our DC MC pointing is bad, and we need to move the MC suspensions to offload the WFS.  (All of the WFS output numbers for MC1 and 3 were around 100, which is pretty big for those numbers).  We should resurrect the WFS offloading scripts so that we can do this more regularly, and not have to do it by hand.

 Aligned MC to offload the WFS

1. Turned OFF the WFS feedback servo.

2. Aligned the MC suspensions by moving the pit and yaw sliders. MC trans sum brought from ~11000 counts to ~15000 counts. MC RFPD DCMON reads 0.45 counts.

3. Turned ON the WFS servo. The WFS output now reads in the order of 0 to +/-15.

4. Measured the MC spot positions. The spot positions look like they moved for the better compared to what they were yesterday.


Attachment 1: MCspots.png  39 kB  | Hide | Hide all
ELOG V3.1.3-