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== Virgo-KAGRA PEM meeting  ==
 * 2020/01/14(The) 17:00-18:00(JST) 9:00-10:00(CEST)
 * Zoom2 : https://zoom.us/j/6676627462		 == Weekly PEM meeting ==
 * 2020/01/28(Tue) 16:00-(JST)
 * Regular meeting meeting (Japanese)
 * Web meeting with Zoom2 ([[https://zoom.us/j/6676627462|Zoom2]])
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=== Agenda ===
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 * KAGRA PEM reports
   * KAGRA detector status & Update of the KAGRA PEM from last meeting (Yokozawa)
   * Sound revelation time
   * others		 === 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 to optical table
  * Hammering test
  * 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 (2/22-24)
  * JPS (2020/3/16-19 @ Nagoya)
   * Yokozawa, TTanaka
  * KIW7

 * PEM injection
  * Shaker injection1 (TTanaka, Yokozawa)
  * acoustic injection (TTanaka, Yokozawa)
   * PSL, REFL and AS table injection
   * Analysis is ongoing
  * magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
   * Effect of the air cooler magnetic field
   * AS, REFL table injection
   * He is writing the thesis

==== Each progress ====

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

 * Washimi
  * Preparation for the hammering test @ Y-end [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Meeting/200121/Minute|200121/Minute]]
  * Noise around 100Hz [[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

 * TTanaka(ICRR)
  * shaker injection with FPMI

 * Fujikawa
  * Lock loss study

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

 * etc

Weekly PEM meeting

  • 2020/01/28(Tue) 16:00-(JST)
  • Regular meeting meeting (Japanese)

  • Web meeting with Zoom2 (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 to optical table
    • Hammering test
    • Long term PEM evaluation
    • Turning off the instruments
    • Many microphone in the PSL room
  • Conference
  • PEM injection
    • Shaker injection1 (TTanaka, Yokozawa)
    • acoustic injection (TTanaka, Yokozawa)
      • PSL, REFL and AS table injection
      • Analysis is ongoing
    • magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
      • Effect of the air cooler magnetic field
      • AS, REFL table injection
      • He is writing the thesis

Each progress

  • Yokozawa
    • Planning toward the O3 run
    • IX. IY microphone
    • Instrument switch off
  • Washimi
  • Kozakai
    • Coupling with calibration line
  • TTanaka(ICRR)
    • shaker injection with FPMI
  • Fujikawa
    • Lock loss study
  • TTanaka(Niigata)
    • Magnetic field from air cooler and compressor
    • Magnetic field injection to AS and REFL table
  • etc

KAGRA/Subgroups/PEM/Meeting/200128/Agenda (last edited 2020-01-28 13:59:39 by chihiro.kozakai)