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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
  * December 17-24 24h engineering run
   * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/EngineeringRun/ER191217_24/ | wiki]]
   * We also held the post ER. We turned off the FFUs and vacuum pumps
  * Lock acquisition to PRFPMI
  * There is still some peaks in the lower frequency
   * Type-A resonant frequency [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11116|JGWDoc11116]]
  * Peaks appeared at higher frequency
   * PEM injection to REFL table
  * After that, we will move to noise hunting
  * ~100Hz noise and line noise of the higher frequency -> PEM

 * PEM plan January
  * Identification of the ~100Hz noise source
   * (Maybe, ) the dominant noise for lower frequency may come from suspension
  * After the success of the PRFPMI (or chance to operate the FPMI), we would like to do following things
   * Understanding the coupling function detected at the refl table
    * At the some point, we detected the larger coupling function
    * Periscope or some optics?
  * We would like to inject sound or vibration to AS, POP and TMS table
  * Long term PEM evaluation

 * PEM festival
  * 01/14(Tue) 9:00-15:00
   * Evaluate the scattered light for payload (with CRY team) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12293]]
  * 01/15(Wed) (Maybe expanded)
   * Turned off almost all FFUs and vacuum pumps

 * 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

 * Newtonian noise measurement
  * Thank you for Virgo PEM member!
  * Francesca mainly measured the newtonian noise
  * We will discuss in 21st. Jan.(Virgo KAGRA PEM meeting)

 * PEM measurement
  * Someday : Effect of the sound to DARM displacement
  * Someday : Environmental check around BS (including the POP)
  * Someday : Evaluation of the table cover
  * Someday : SR2 and SR3 optical lever (Reflection light from SRM?)

==== Each progress ====

 * Yokozawa
  * Planning toward the O3 run

 * Washimi
  * Preparation for the hammering test @ Y-end [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12497|klog]]
  * Sound reverberation study (KAGRA & Virgo)

 * Kozakai
  * Offline detchar report for the part of the PEM

 * TTanaka(ICRR)
  * shaker injection with FPMI[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11117|speaker@12/8]],[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11128|shaker@12/15]]
  * Master thesis[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10387|thesis]]
 * Fujikawa
  * Lock loss study2
  * fujimopy

 * 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
    • December 17-24 24h engineering run

      • wiki

      • We also held the post ER. We turned off the FFUs and vacuum pumps
    • Lock acquisition to PRFPMI
    • There is still some peaks in the lower frequency
    • Peaks appeared at higher frequency
      • PEM injection to REFL table
    • After that, we will move to noise hunting

    • ~100Hz noise and line noise of the higher frequency -> PEM

  • PEM plan January
    • Identification of the ~100Hz noise source
      • (Maybe, ) the dominant noise for lower frequency may come from suspension
    • After the success of the PRFPMI (or chance to operate the FPMI), we would like to do following things
      • Understanding the coupling function detected at the refl table
        • At the some point, we detected the larger coupling function
        • Periscope or some optics?
    • We would like to inject sound or vibration to AS, POP and TMS table
    • Long term PEM evaluation
  • PEM festival
  • 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
  • Newtonian noise measurement
    • Thank you for Virgo PEM member!
    • Francesca mainly measured the newtonian noise
    • We will discuss in 21st. Jan.(Virgo KAGRA PEM meeting)
  • PEM measurement
    • Someday : Effect of the sound to DARM displacement
    • Someday : Environmental check around BS (including the POP)
    • Someday : Evaluation of the table cover
    • Someday : SR2 and SR3 optical lever (Reflection light from SRM?)

Each progress

  • Yokozawa
    • Planning toward the O3 run
  • Washimi

    • Preparation for the hammering test @ Y-end klog

    • Sound reverberation study (KAGRA & Virgo)

  • Kozakai
    • Offline detchar report for the part of the PEM
  • TTanaka(ICRR)
  • Fujikawa
    • Lock loss study2
    • fujimopy
  • 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)