== Weekly PEM meeting ==
 * 2020/03/20(Tue) 14:00-(JST)
 * Regular meeting meeting (Japanese) 
 * Web meeting with Zoom2 ([[https://zoom.us/j/6676627462|Zoom2]])

 * member : Nagano, Ohkawa, Takano, RTakahashi, Washimi, Tomaru, Kozakai, Yokozawa

==== General issue ====

 * Interferometer status
  * 3/10 - commissioning break started
   * Noise projection
   * Hammering test (Sat. and Sun. morning time)
   * DRFPMI lock trial

  * Noise budget was (almost) completed
   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13600|klog13600]]
   * Below 70 Hz : Type-A control noise
   * 100 - 200 : Actuator DAC noise(?)
   * 200 - 400 : Acoustic noise around IMM area (?)
   * Above 400 Hz : Shot noise, Laser noise(Intensity, frequency)

 * PEM tasks in March
  * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/MAR2020|task list]]
  * PRM booth MICを常設にしませんか？ (IOO1 BNC ch11かch12で)

==== Each progress ====
 * Discussion about the list of the general issue (Yokozawa)
 * Acoustic injection and hammering test result (Washimi)
   * Data and Results list : [[KAGRA/Subgroups/PEM/PEMinjection/O3]]
   * KAGRA Noise INJection Analizer; NINJA : [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11564|JGW-T2011564]]

 * Plan of the lock loss study (Fujikawa)

==== Minutes ====

 * Yokozawa will make the todo list for Saturday and Sunday hammering test
 * Check again the IMC gate valve (Open and Close lock trial with close the gate valve, ...)
 * Discussed about the offline subtraction (including to online?)

 * Hammering test and acoustic injection to REFL table area
  * There is coherence with the DARM, PRCL. Not so in CARM, MICH
   * Laser fluctuation
  * The hammering effect is largest around IMC bellows. And effect became smaller when we hammered far from MCF chamber.
  * The effect of the hammering to MCF chamber itself is not so large
  * From the noise projection to the accelerometer, the dominant vibration source would come from acoustic
  * We turned out 500Hz may come from REFL table, but we didn't identify which optic may make

 * NINJA
  * Only work in the k1ctr7 (Environmental dependence)

 * Investigation the scattering light effect by injecting the low frequency fluctuation
  * So called shoulder noise
  * [[https://logbook.virgo-gw.eu/virgo/?r=38028|Virgo work by Nagano-san]]
  * Including to scheduling

 * camera  setup inside the vacuum