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Entry  Tue Feb 16 14:56:44 2021, gautam, Update, SUS, aLIGO Sat Amp installed, powered MC1_deadUL.pngIMG_9100.jpg
    Reply  Wed Feb 17 16:11:53 2021, gautam, Update, SUS, aLIGO Sat Amp installed, powered 
       Reply  Thu Feb 18 15:33:21 2021, gautam, Update, SUS, aLIGO Sat Amp installed, powered and commissioned 
          Reply  Thu Feb 18 18:05:04 2021, gautam, Update, SUS, aLIGO Sat Amp characterization OSEMnoise.pdfLEDdriveNoise.pdf
             Reply  Thu Feb 18 20:20:25 2021, Koji, Update, SUS, aLIGO Sat Amp characterization 
Message ID: 15817     Entry time: Thu Feb 18 15:33:21 2021     In reply to: 15814     Reply to this: 15818
Author: gautam 
Type: Update 
Category: SUS 
Subject: aLIGO Sat Amp installed, powered and commissioned 

The WFS servo was recommissioned. The matrix can be tuned a bit more, but for now, I've recovered the old performance and the alignment doesn't seem to be running away, so I defer further tuning for later. The old Satellite box was handed over to Yehonathan for his characterization of the "spare" OSEMs.

This finishes the recovery of the MC1 suspension, I am now satisfied that the local damping loops are performing satisfactorily, that the WFS servo is also stable, and that POX/POY locking is recovered. On MC1, we even have 4 actuatable face OSEMs and the PIT(YAW) bias adjust slider even moves the optic in PIT(YAW), what a luxury. 

I've SDFed all the changes, and have backup of the old realtime model and C1SUSAUX_MC1 database files if we want to go back for whatever reason. The changes required to make this suspension work are different from what will eventually be required for the BHD suspensions (because of the hybrid iLIGO/aLIGO electronics situation), so I will not burden the readers with the tedious details.

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