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Message ID: 945     Entry time: Sat Sep 13 23:13:01 2008
Author: Alberto 
Type: Update 
Category: General 
Subject: abs cavity length experiment 
The Y arm was locked all time today but, suddenly, this afternoon it lost lock and since then I've been unable to restore it. I tried unsuccessfully the Restore and the Align scripts several times, although the position of PZT steering mirrors were good (as in the snapshot). I tried things like unlocking/locking the MC, the FSS reference cavity, the PMC but it didn't work. Then I decided to switch to the X arm. Locking it was a piece of cake compare to Y. I'm going to start measuring the FSR of the X arm.
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