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Entry  Fri Jan 20 15:59:02 2012, kiwamu, Update, Green Locking, Y arm ALS noige budget Yarm_ALS_2012Jan19.png
    Reply  Fri Jan 20 16:24:50 2012, kiwamu, Update, Green Locking, Y arm ALS : time series time_series.png
       Reply  Fri Jan 20 17:05:59 2012, rana, Update, Green Locking, Y arm ALS : time series 
Message ID: 6215     Entry time: Fri Jan 20 16:24:50 2012     In reply to: 6214     Reply to this: 6216
Author: kiwamu 
Type: Update 
Category: Green Locking 
Subject: Y arm ALS : time series 

Here is a new time series plot showing how stably ALS can control the arm length.

In the middle of the plot the cavity length was held at the resonance point for ~ 2 min. and then it passed through the resonance point to show the full shape of the PDH signal.

Apparently the PDH signal is now quieter than before (#6133)

time_series.png

Quote from #6214

One of my goals in this week is : measurement of the current best ALS noise budget.

 

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