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IXC Recovery(20240409)
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 * Suspension health check (Takahashi, Ushiba)
  * A01: Cable check
   * Remeasure the adjusted cables.
   * Recovery of BF damper: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28613, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28541, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28862
  * A02 Porality Check
   * -> Judge in TF measurement
   * magnets: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28632
  * A03 Rubbing Check
   * -> Judge in TF measurement
  * A04: Range and Calibration
   * 
  * A05: Watchdog Setting: Skip
  * A06: Height Measurement
   * Done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29013
  * A08: Calibration:skip
  * A09: Spectrum
   * ITMX tower sensor: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29122,
   * IM/MN photosensors:  https://klog.icrr.u-tokyo.ac.jp/osl/?r=29121,
  * A10: Transfer Function
   * ITMX: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29111 
   * EQ stopper: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29040
   * Roll Adj: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28959
 * Oplev Check (Yokozawa, Akutsu)
  * MN: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29074
  * TM: check between closing SI.
 *Windows Cleaning
  * Done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28788,

 * Tcam (Yokozawa and ChenDan, and Yamamoto)
  * Done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28830

 * Green flash at REFL and Trans PD
  * 

 * Baffle PDs (Yokozawa and his selected persons): 
  * not necessary
  * one photodetector was dead.

 * NAB, WAB (Akutsu)
  * WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28851
  * NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28798
  * IXA closing: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28887

 * Vacuum system (Kimura-san / Uchiyama-kun and their selected persons)
  * Nasty air parts were replaced.
  * Vacuum alert recovery after pumping down.
  * GV interlock will be tried after pumping down.
  * N2 purge is necessary for IXV.

 * Cryo-system (Kimura-san and his selected persons)
  * All temp signals are obtained?
  * Cryocon alert to slack after cooling.
  * No interlock for TMP around the Cryostat.