== Weekly PEM meeting ==
 * 2020/01/06(Tue) 16:00-(JST)
 * Regular meeting meeting (Japanese) 
 * Web meeting with Zoom2 ([[https://zoom.us/j/6676627462|Zoom2]])


=== 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 etc...
  * Peaks appeared at higher frequency
   * PEM injection to REFL table
  * Until Jan. 13th, ASC and lock trial of the PRFPMI will be higher priority
  * 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
   * Jitter noise analysis
    * Camilla and Washimi-san evaluated the jitter noise at PSL room, but two order lower than current noise
    * But, we don't know the higher frequency
   * 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

 * ICRR Kyodo-riyo
  * Yokozawa and Washimi-san prepared

 * PEM festival
  * This week(Friday?)
   * Evaluate the optical levers
    * Check OpLev cover is enough for O3 or not
    * Resonant frequency 
  * 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) ??
   * 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)
   * Where is the PZT shaker driver?
   * Acoustic injection -> Shaker injection
  * Shaker injection2 (Washimi, Camilla)
   * Bluetooth shaker + Chromebook [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12187]]
   * optical table, oplev, ...
  * 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 

 * 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
  * Suspension resonant frequency (with CRY and VIS team)
  * Post ER report1
  * Planning toward the O3 run

 * Washimi
  * post ER [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11165|JGW-G2011165]]
  * Beam jitter study (Follow Camilla study, reported by Yokozawa?)
  * Sound reverberation study (KAGRA & Virgo)

 * Kozakai
  * Trigger analysis with ER run for the part of the PEM
  * 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]],[[attachment:mtg200107.pdf|meeting pdf]]
  * 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