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  Sat May 5 01:24:07 2012, Den, Update, PSL, PMC whitening.jpgmcf_v.png
    Reply  Sat May 5 09:13:02 2012, Koji, Update, PSL, PMC 
       Reply  Sat May 5 10:20:21 2012, Den, Update, PSL, PMC 
          Reply  Sat May 5 12:23:38 2012, Koji, Update, PSL, PMC 
Message ID: 6606     Entry time: Sat May 5 10:20:21 2012     In reply to: 6605     Reply to this: 6607
Author: Den 
Type: Update 
Category: PSL 
Subject: PMC 

Quote:

I suspect that it was just unlocked when you had disconnected the cable.

There is not reflection now. It seems that it is now misaligned after the alignment work.

So what you need is "align while scanning PZT -> lock -> align".

Quote:

Unfortunately, after the measurement when I unplugged BNS connector from the laser, I misaligned PMC. For several hours I adjusted the mirrors but could not significantly improve transmitted signal. I'll return to this issue tomorrow.

 

 No, no, it was unlocked after I connected the cable back. The beam was even not on the PMC. I'll try PZT -> lock -> align.

ELOG V3.1.3-