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Message ID: 14904     Entry time: Fri Sep 20 18:28:34 2019
Author: gautam 
Type: Update 
Category: LSC 
Subject: Y arm locking attempt 

I tried to lock the Y arm cavity length to the PSL frequency using POY11_I as an error signal. Even though I think the cavity alignment is good (I see TRY flashes ~0.8), I am unable to achieve a lock. I checked the signal conditioning, and as far as I can tell, all the settings are correct, but there may be some settings that have not been re-assigned correct values. The other possibility is that something is not quite right with the new c1iscaux. The PDH error signal and arm cavity flashes all seem good though (see Attachment #1), so I'm not sure what obvious thing I'm missing.

To be continued...

Attachment 1: POYlocking.png  156 kB  Uploaded Fri Sep 20 19:33:37 2019  | Hide | Hide all
POYlocking.png
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