= Minute of PEM meeting =
----

 * Date: 2019/7/2 17:00-18:00(JST)
 * Attendance: Yokozawa, Washimi, TTanaka, Okawa, Fujikawa, Mori, Kozakai, Kaihotsu, Miyo, Oshino, Yamat

=== Agenda === 

 * General issue

  * KAGRA interferometer status
   * PRC loss was large, birefringence effect?
   * FPMI or SRFPMI or DRFPMI
   * Open the CS area and remove the PRM and SRM?
   * Before that, we want to investigate the scattering effect at CS area

  * Chrome Book project
   * Portable PEM researcher
   * Spectral analyzer, sound recording, ...
   * USB accelerometer ([[attachment:20190628_summary.pdf|Center area]]), microphone, ...
   * Data sharing [[https://drive.google.com/open?id=1zIturCCaSe7mmP0s15TcRzHsvNvomP5k|GoogleDrive]]

  * Weekly PEM measurement
   * Friday is temporal weekly PEM measurement
   * Understanding the effect of the instruments and so on
   * Power supply
   * duct vibration

  * PEM DAQ sampling rate
   * Due to the limited DAQ power, almost all PEMs are taken at 2kHz sampling
   * Only PSL and CS microphone are taken with 16kHz sampling for the noise hunting

  * PEM injection
   * Shaker injection1 (Yikang, Yokozawa)
   * Shaker injection2 (Okutomi, Fabian)
   * acoustic injection (TTanaka)
   * magnetic field injection (Yikang, Yokozawa)
   * RF injection (TTanaka, Washimi)

  * 1st engineering run
   * 1st engineering run : Jun. 8th 12:00-18:00(JST) : Xarm cavity

  * Preparing toward the next engineering run
   * Next engineering run : 13th Jul. 
   * Interferometer configuration ?

  * English meeting
   * We will have a monthly English meeting(Mainly share the information with Virgo people)
   * The third Tuesday of every month 17:00-(JST) 10:00-(CEST)
   * 2nd meeting will be held at 16th Jul.(Tue) 17:00-18:00 [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Meeting/190716/Agenda|URL]]
  * Seismon issue
   * We already installed to KAGRA system
   * Need the tuning for the KAGRA
   * Large earthquake happened this month, we "should" be a safe mode before coming large earthquake (PEM issue???)

  * Task list toward the O3
   * [[https://docs.google.com/spreadsheets/d/1DSltWg18KrwnfkVJmSm09TkQ82aQ5lHAdaC9uCozGC0/edit#gid=1072504162|task sheet]]
   * Please send e-mail to me if you have comments.

 * each member progress
  * Yokozawa
   * Power supply issue
    * We started the investigation around the EX0 rack today.
    * With Pcal noise investigation
  * Washimi　
   * Others and plan toward the JPS meeting
    * Google chrome project
    * Accelerometer and microphone
    * They are very useful, especially potable feature is great.
    * Several spectral with short spectrogram was shown
  * Kozakai
   * Trigger event identification
    * Debugging now
    * Current a few days failed?
   * Yuzu summary page comments 
   * Others and plan toward the JPS meeting
  * Miyo
   * Effect the protect shied to the seismometer
   * Long term study of the KAGRA ground motion [[https://github.com/MiyoKouseki/kagra-gif/issues/92| Link]]
    * One year trend is now opened consistent with Sekiguchi-san. Time variance check.
    * 0.2Hz source dependence (0.15Hz??)
    * 1.2Hz came from the ikenoyama river, observed during bKAGRA phase1
    * Future issue is written in his github, welcome the comments
    * Future discussion towards the English meeting
  * Oshino
   * Weather station issue
    * Web page ready, pick up information by the k1script ready, remaining issue is making the epics channel and caput
  * TTanaka
   * Preparing for the PEM injection
    * Speaker will be arrived tomorrow  
   * Microphone calibration
    * Check with the coherent and non-coherent component
   * Thesis agenda and plan toward the JPS meeting
    * JGW Doc
  * Okutomi
   * Shaker injection
  * Kaihotsu  
   * Report about the KIW6
    * Questions
    * They will join to KAGRA PEM once of the every week (Friday?)
  * Yuzurihara
   * Yuzu summary page comments
  * etc

 * github progress