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Entry  Thu Jan 31 20:06:22 2013, Evan, Update, Locking, PRM/PR2 cavity 
    Reply  Thu Jan 31 23:48:45 2013, Koji, Update, Locking, PRM/PR2 cavity 
       Reply  Fri Feb 1 09:33:11 2013, Jamie, Update, Locking, PRM/PR2 cavity 
          Reply  Fri Feb 1 15:12:53 2013, Jenne, Update, Locking, PRM/PR2 cavity 
             Reply  Fri Feb 1 19:55:33 2013, Jenne, Update, Locking, PRM/PR2 cavity 
                Reply  Fri Feb 1 23:12:42 2013, Koji, Update, Locking, PRM/PR2 cavity 
                Reply  Fri Feb 1 23:52:59 2013, rana, Update, Locking, PRM/PR2 cavity 
Message ID: 7986     Entry time: Fri Feb 1 19:55:33 2013     In reply to: 7985     Reply to this: 7987   7988
Author: Jenne 
Type: Update 
Category: Locking 
Subject: PRM/PR2 cavity 

[Jamie, Koji, Jenne]

We are looking at the mode scan data, and have some preliminary results!  We have data from when the cavity was aligned, when it was slightly misaligned in pitch, and slightly misaligned in yaw.

Inverting the equation for transverse mode spacing, we infer (for pitch misalignment) a cavity g-factor of 0.99, and from there (assuming the G&H mirror is flat and so has a g-factor of 1), we infer a PRM radius of curvature of 168 meters which is ~50% longer than we expected.

 

More results to come over the weekend from Jamie.

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