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  Tue Aug 4 23:03:56 2009, alberto, Update, Locking, IFO Alignment 
    Reply  Wed Aug 5 09:48:05 2009, alberto, Update, Locking, IFO Alignment 2009-08-09_FSStransPD.png2009-08-09_FSreflPD.png
       Reply  Thu Aug 6 09:33:08 2009, alberto, Update, Locking, FSS Transmitted and Reflected Power Trends 2009-08-06_PSL_trends200days.png2009-08-06_PSL_trends.png
          Reply  Thu Aug 6 10:32:45 2009, alberto, rob, Update, Locking, More PSL trends: NPRO, MOPA, FSS, PMC and MZ 2009-08-06_PSLtrends.png
Message ID: 1842     Entry time: Thu Aug 6 09:33:08 2009     In reply to: 1833     Reply to this: 1843
Author: alberto 
Type: Update 
Category: Locking 
Subject: FSS Transmitted and Reflected Power Trends 

 I've now also trended the MOPA output power for the last 200 days to check a possible correlation with the FSS reflected power. See attachment.

The trend shows that the laser power has decayed but it seems that the FSS reflected power has done it even faster: 30% drop in the FSS vs 7% for the MOPA in the last 60 days (attachment n.2).

Attachment 1: 2009-08-06_PSL_trends200days.png  16 kB  Uploaded Thu Aug 6 10:34:20 2009  | Show | Show all
Attachment 2: 2009-08-06_PSL_trends.png  13 kB  Uploaded Thu Aug 6 10:34:48 2009  | Show | Show all
ELOG V3.1.3-