== Status of the KAGRA commissioning 230510 ==

 * Status 
  * Sensitivity 1.2 -1.4 Mpc
  * From the results of CAL/DET day at 4/26, calibration is consistent with previous measurement

 * Effect of earthquake at Noto peninsula 
  * 5th May : Magnitude 6.7 at Noto peninsula
  * Several earthquakes are still happened
  * Interferometer is already recovered
   * Re-alignment at PSL room will be performed today

 * Commissioning work
  * Alignment sensing and controls
   * We need the PR3 global control to keep the stable opleration
    * Trial is ongoing
    * If trial is not succeeded until the O4a, we will sometimes perform manual alignment
   * OMC alignment control problem
    * Fixing is ongoing 
    * If trial is not succeeded until the O4a, we will sometimes perform manual trouble shooting
  * Tapping test and shaker injection
   * We performed the tapping test(Vibration injection test by hand) at 4/25 and 4/29
   * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14941|Result(JGWDoc14941)]]
   * OMC chamber is most sensitive part, we performed the shaker injection test
    * Analysis is ongoing
  * Increasing the laser power
   * Toward the stable operation is higher priority, so if possible we will try to increase the laser power
  * Glitch investigation
   * ETMY oplev glitch 
    * Solved by install the temperature control system
   * ITMY suspension glitch
    * Try to install the IR/GR filter in front of oplev QPD
   * IPC glitch
    * It sometimes happened that the time series sometimes jump during observation [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24930|example(klog24930)]]
    * Trial of slim down the real time model
    * Trial the glitch reason by Sawada-san
   * 37 Hz glitch 
    * It detected in OMC signal [[ https://klog.icrr.u-tokyo.ac.jp/osl/?r=25106|klog25106]]
    * 37 Hz and its harmonics frequency excited
    * Seeing in hveto analysis(?)
    * The reason is not understand yet
  * Lock loss investigation
   * Ongoing