== Weekly PEM meeting ==
 * 2020/05/29(Fri) 16:00- 
 * Regular meeting
 * Zoom2 : https://zoom.us/j/6676627462

=== Agenda ===

==== Conference issue ====

 * JPS meeting
  * Online meeting [[https://www.jps.or.jp/activities/meetings/autumn/autumn_index.php|web]]
  * deadline 6/4

 * 新学術地下宇宙 (6/2-4)
  * Online meeting [[https://www.lowbg.org/ugap/ws/am2020/index.html?LangP=JP&InputContents=Prog|web]]
  * Washimi has an invited talk on 6/3 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11716|slide]] (posted to the CPC)
  * Yokoyama-san also has a talk (not KAGRA?)
　
==== General issue ====

 * Interferometer status
  * Now interferometer is "suspend mode"
   * Measurements without interferometer
   * Keep the IMC lock
   * Check the green laser flash
  * Earthquakes at Hida area is serious
   * Large frequency
   * Close from KAGRA. Damage to alignment

 * Tasks for post-commissioning
  * [[https://docs.google.com/spreadsheets/d/1w4q8OvX9E6nkYSgshLYLoZH5yvQXHvGmL1agux8ztx0/edit?usp=sharing|post commissioning]]
   * Vibration measurement for OpLevs (+Ushiba, 6/1,3,4)
   * Acoustic injection (nest nest week?)
      * Day 1 : For only REFL (remote work) -> study of nonlinearity & up/down conversion (washimi will make more detaid plan)
      * Day 2 : For each booth (mine work)  -> noise budget
   * Scattered light
      * One of the hammering test
      * OMC chamber vibration RMS
   * Line noise investigation by PEM

 * PEM meeting schedule
   * Washimi needs to join the VIS meeting (Fri. 14:00-15:30)

 * Working style (COVID-19 related)

==== Jurnal paper issue ====

  * KAGRA summary paper(Yokozawa) '''<<Almost DONE>>'''
   * Part of the KAGRA overview paper
   * PTEP (Overview of KAGRA : (3) Detector characterization, calibration, physical environment, and data quality)[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11664|klog11664]]
    * Installation
    * Technical issue

  * Acoustic injection paper (Washimi) '''<<ON GOING>>'''
   * Target journal : Classical and Quantum Gravity
   * Request 3+8 hours data taking to commissioning

  * Portable PEMs (Yokozawa+)
   * Target journal->to be discussed later (NIM? PTEP? JINST?)
   * Chromebook+USB PEMs, aco power supply+BNC PEMs+KAGRA DAQ

  * Ground motion paper (Yokozawa)
   * Technical note
   * Just for memo(忘備録)
   * If we can summary for special issue, we will start the discussion for journal paper
    * Lock loss study by earthquake
    * Micro-seismic motion
    * Seasonal ground motion
    * Newtonian noise
    * Baseline compensation
    * Human activity and its effect
    * etc.

  * PEM summary note (Yokozawa+)
   * Just for memo, technical note
   * What we did toward the observation
   * If we can summary for special issue, we will start the discussion for journal paper
    * PEM map
    * Lock loss study
    * Scattered light
    * etc.

  * Acoustic reverberation paper (Washimi+Virgo)
    * KAGRA data & Virgo data
    * need more analysis (March data in Virgo)

  * Magnetic field paper (Washimi+)
    * Target journal->to be discussed later
    * section
      1. Introduction
      2. 1-year Geomagnetism in underground
      3. 1-year Schumann resonance in underground
      4. Mag. field in EXC chamber
      5. Coherence between PRFPMI and MAGs
      6. Lightning effect on PRFPMI (3/22 event)
      7. Conclusion 

  * Other topic
   * If you have interested in, please contact to Yokozawa and Washimi first
   * We took many environmental data
    * Six Seismometer(Miyo+)
    * Many microphones and accelerometers(Yokozawa+)
    * Weather vs environment
    * Temperature vs suspension
    * Earthquake vs magnetic-field
      * e.g. [[https://ci.nii.ac.jp/naid/110003828999]]
    * Non linearity noise study
    * Line noise investigation(Yokozawa+)
    * ICA analysis for E-run/O3GK (Kume, Yokoyama)


==== Preparation for O3c / O4 ====

  * for O3c
    * Ondotori maintenance : PSL2, MCF, IXV, IXA, EXA, COOLERs, CRYDR
      *[[https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/SEM/fig_RT/]]
    * FFU operation & particle counter (if we open the OMC)

  * for O4
    * [[KAGRA/Subgroups/PEM/GNDmeeting|GND issue]]
    * cabling ([[https://github.com/gw-pem/kagra-pem/issues/204|github204]])
    * ondotori ([[https://github.com/gw-pem/kagra-pem/issues/205|github205]])
    * water fluid ([[https://github.com/gw-pem/kagra-pem/issues/207|github207]])
    * read out of the lightning sensor ([[https://github.com/gw-pem/kagra-pem/issues/182|github182]])
    * RF monitor
    * tiltmeter
    * cosmic-ray detector

==== Place for memo ====