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Entry  Thu Jun 28 00:50:48 2012, yuta, Update, Locking, PRMI work started, commissioning plan POP_1024903948.bmpREFL_1024903929.bmpAS_1024903921.bmp
    Reply  Thu Jun 28 01:44:57 2012, Koji, Update, Locking, PRMI work started, commissioning plan 
    Reply  Thu Jun 28 15:21:02 2012, rana, Update, Locking, PRMI work started, commissioning plan 
       Reply  Thu Jun 28 20:59:28 2012, yuta, Bureaucracy, Locking, vent for PRC check, TOMORROW! 
          Reply  Thu Jun 28 22:08:57 2012, Jenne, Bureaucracy, Locking, vent for PRC check, TOMORROW! 
             Reply  Fri Jun 29 01:49:36 2012, yuta, Bureaucracy, Locking, vent for PRC check, TOMORROW! 
Message ID: 6890     Entry time: Thu Jun 28 22:08:57 2012     In reply to: 6889     Reply to this: 6891
Author: Jenne 
Type: Bureaucracy 
Category: Locking 
Subject: vent for PRC check, TOMORROW! 

Quote:

Check List:
 We will just open the BS chamber.
  - PRM flipping
  - PR2, PR3 flipping
  - PRC suspensions
  - Cipping check in PRC

 What do you mean by PR2, PR3 flipping?  They are (supposed to be) flat mirrors, so obviously they should be installed correctly, but they won't change the mode matching in a huge way if they're backwards, right?

For the PRM, I recommend checking (a) the arrow inscribed on the thinner side of the optic and (b) that the arrow *actually* points to the HR side.  I'm pretty sure I installed all the optics with the arrow pointing away from the OSEMs, but I never did a thorough check that the arrow always actually pointed to the HR coated side.  I don't remember any optics where I said "hmmm, that's funny, the arrow is pointing backwards", but nor did I write down that I had checked.

Also, hopefully the PRM is correct.  If however it's not, that means that all of the magnets are glued onto the HR side, and we'll have to redo all of the magnet gluing.  The guiderods should be fine, but all 6 magnets would need redoing.  If we were very, very careful and didn't break any of the magnets off of the dumbbells, it's a 24 hour turnaround due to drying time.  Since inevitably we break magnets away from dumbbells, conservatively we should think about a 48 hour turnaround. 

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