== Weekly PEM meeting ==
 * 2020/01/28(Tue) 16:00-(JST)
 * Regular meeting meeting (Japanese) 
 * Web meeting with Zoom2 ([[https://zoom.us/j/6676627462|Zoom2]])


=== Agenda ===
　
==== General issue ====

 * Interferometer status
  * Finally, we can lock the PRFPMI
   * Transmittance laser power became 100 times higher than FPMI
   * Lock duration is about 30min at maximum
  * OMC commissioning is also ongoing 
  * ~100Hz noise and line noise of the higher frequency -> PEM 

 * New PEMs
  * We bought the ACO power supply, microphone and accelerometers(end of Feb.)
  * Basically the portable PEMs

 * PEM plan 
  * PEM injection
    * Shaker injection (TTanaka, Yokozawa)
    * Acoustic injection (TTanaka, Yokozawa)
      * PSL, REFL and AS table injection (Defence of TT Thesis -> tomorrow)
   * magnetic field injection (Niigata TTanaka, Fujikawa, Yokozawa)
     * Effect of the air cooler magnetic field
     * AS, REFL table injection 
     * He is writing the thesis
  * Hammering test
     * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Meeting/200121/Minute|20/01/21 Minute]]
     * Hammering test @ Y-end : around 2/15 ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11419|JGW-G2011419]])
  * Long term PEM evaluation
  * Turning off the instruments
  * Many microphone in the PSL room

 * Conference
  * [[https://sites.google.com/view/ugapw2020/home|地下宇宙若手研究会]]@茂住 (2020/2/22-24)
  * JPS (2020/3/16-19 @ Nagoya)
    * Yokozawa, TTanaka
  * F2F (2020/4/17-20 @ Kashiwa) [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/LCGT/Meeting/f2f/2020Apr|wiki]]
  * GWADW (2020/5/11-16 @ Hokkaido)
  * KIW7 (2020/5/29-31 @ NCU, Taiwan)
 

==== Each progress ====

 * Yokozawa
  * Planning toward the O3 run
  * IX. IY microphone
  * Instrument switch off

 * Washimi
  * Noise around 100Hz @ ER3 [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12629|klog12629]]
  * Portable PEM with DataLogger [[https://github.com/gw-pem/kagra-pem/issues/201|GutHub201]]
  * PEM chassis [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11425|JGW-T2011425]]

 * Kozakai
  * Coupling with calibration line @ ER3 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11426|slides]]

 * TTanaka(ICRR)
  * shaker injection with FPMI
  * Master thesis [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10387|JGW-G1910387]]

 * Fujikawa
  * Lock loss study 

 * TTanaka(Niigata)
  * Magnetic field from air cooler and compressor
  * Magnetic field injection to AS and REFL table

 * etc