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Entry  Wed Apr 18 08:53:50 2012, Jamie, Update, General, Power outage last night 
    Reply  Wed Apr 18 10:05:40 2012, Jamie, Update, General, Power outage last night 
       Reply  Wed Apr 18 11:46:14 2012, Jenne, Update, General, Power outage last night 
          Reply  Wed Apr 18 11:54:31 2012, Jenne, Update, General, Power outage last night 
          Reply  Thu Apr 19 09:45:43 2012, Suresh, Update, General, MC2 Oplev signals redirected for use in WFS servo 
Message ID: 6544     Entry time: Wed Apr 18 11:46:14 2012     In reply to: 6543     Reply to this: 6545   6549
Author: Jenne 
Type: Update 
Category: General 
Subject: Power outage last night 

Quote:

  • there are no oplev signals in MC1, MC2, and MC3
  • Something is wrong with PRM.  He is very noisy.  Turning on his oplev servo makes him go crazy.

 None of the 3 MC optics have oplevs, so there shouldn't be any oplev signals. Although MC2 has the trans QPD, which was once (still is??) going through the MC2 oplev signal path.

PRM was noisy last week too.  But turning on his oplev shouldn't make him crazy. That's not so good. Try restoring PRM (the ! near the PRM label on the IFO align screen), then checking if his oplev is ~centered.  Maybe PRM wasn't in the nominal position at the time you restored from.

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