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
 List  |  Find  |  Login  |  Help 
Entry  Sat Dec 8 04:12:38 2012, Den, Update, LSC, prcl IMG_0118.JPG
    Reply  Sun Dec 9 01:21:51 2012, Den, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt 6x
       Reply  Sun Dec 9 17:51:53 2012, rana, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt 
          Reply  Mon Dec 10 03:02:03 2012, Den, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt PRCL_LOCK.png
             Reply  Mon Dec 10 10:13:41 2012, Den, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt 
                Reply  Mon Dec 10 22:34:34 2012, Den, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt PR2.bmpPRM_LOCK.bmpITMY.pngITMX.png
                   Reply  Thu Dec 13 03:20:48 2012, Den, Update, LSC, beam inside DRMI is clipping on PR3 Tip-Tilt PR2_ITMX.pngPR2_ITMY.pngPR3_LOCK.png
Message ID: 7803     Entry time: Mon Dec 10 03:02:03 2012     In reply to: 7802     Reply to this: 7804
Author: Den 
Type: Update 
Category: LSC 
Subject: beam inside DRMI is clipping on PR3 Tip-Tilt 

Quote:

 

 Some explanation of how you define power buildup please. Also some plots showing the evidence.

 I think about power buildup as a ratio of the power in the cavity when it is locked and unlocked = (POYDC_LOCKED - POYDC_OFFSET) / (POYDC_UNLOCKED - POYDC_OFFSET). I do not multiply this number by PRM transmission.

POYDC_OFFSET = -0.006

POYDC_UNLOCK = 0.063

For example, on the plot below power buildup is 15.

PRCL_LOCK.png

ELOG V3.1.3-