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Entry  Mon Aug 1 04:08:24 2011, kiwamu, Update, ABSL, Arm length measurement : cavity kick technique ETMY_kick.png
    Reply  Tue Aug 2 16:55:21 2011, rana, Update, ABSL, Arm length measurement : cavity kick technique L.png
Message ID: 5095     Entry time: Tue Aug 2 16:55:21 2011     In reply to: 5079
Author: rana 
Type: Update 
Category: ABSL 
Subject: Arm length measurement : cavity kick technique 

Quote:

I made some attempts to measure the current length of the arm cavities by using the mass-kicking technique.

 Why not just scan the Green laser to measure the arm lengths instead? The FSR of the arm is ~3.75 MHz and so all you have to do is lock the arm green and then sweep the PZT until the resonance is found at 3.75 MHz.

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