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Entry  Tue Mar 13 07:04:55 2012, kiwamu, Update, LSC, evolution of the sensing matrix in PRMI as a function of time PRCL.pngMICH.png
    Reply  Tue Mar 13 16:40:06 2012, kiwamu, Update, LSC, evolution of the sensing matrix in PRMI as a function of time: details lockins_MICH.png
    Reply  Tue Mar 13 16:56:19 2012, kiwamu, Update, LSC, evolution of the sensing matrix in PRMI as a function of time 
    Reply  Wed Mar 14 21:01:36 2012, keiko, Update, LSC, evolution of the sensing matrix in PRMI as a function of time 
Message ID: 6403     Entry time: Tue Mar 13 07:04:55 2012     Reply to this: 6405   6406   6419
Author: kiwamu 
Type: Update 
Category: LSC 
Subject: evolution of the sensing matrix in PRMI as a function of time 

The punch line is -- the sensing matrix still looks strange in the PRMI configuration.

 

I have been measuring the sensing matrix of the PRMI configuration because it didn't make sense (#6283).

One strange thing I have noticed before was that all the I-phase signals showed a weird behavior -- they fluctuate too much in time series.

Tonight I measured the sensing matrix again but this time I recorded them as a function of time using the realtime LOCKINs in the LSC front end.

The attached plots are the responses (optical gains) of PRCL and MICH in watts / meter at various sensors in time series.

I will explain some more details about how I measured and calibrated the data in another elog entry.

 

PRCL.png

 MICH.png

 

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