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   * 6/11 : Day 2 : re-measurement of Day 1
   * Unclear : Day 3 : For each booth (mine work)  -> noise budget
   * 6/11 : Day 2 : re-measurement of Day 1 (REFL) + PSL
   * Unclear : Day 3 : BS, SR, ITMX '''<<Before DRFPMI study (Jul.)>>'''

Weekly PEM meeting

Agenda

Conference issue

  • JPS meeting
    • Online meeting web

    • Yokozawa will present about the PEM activity
  • KIW7
    • The 7th KAGRA International Workshop (National Central U., Taiwan), Dec. 18-20, 2020 (F2F meeting on Dec. 17-18)
    • Yokozawa is supprted by C2C program

General issue

  • Interferometer status
    • Now interferometer is post-observation
      • It may continue to end of June
      • Request 1 day for PEM injection
      • IMC scattered light check by GigE camera (6/30 Kokeyama, Yokozawa)
      • Check the OMC leg vibration
      • 6/25 early morning PRFPMI lock with better alignment -> If you interested in, you can use data

    • Earthquakes at Hida area is serious
      • Frequency was reduced
      • Earthquake in Japan is frequent, suspension master guardian worked well
    • Schedule for O4 will be discuss later
  • Tasks for post-commissioning
    • Acoustic injection
      • 6/5 : Day 1 : For only REFL (remote work) -> study of nonlinearity & up/down conversion -> DAQ trouble

      • 6/11 : Day 2 : re-measurement of Day 1 (REFL) + PSL
      • Unclear : Day 3 : BS, SR, ITMX <<Before DRFPMI study (Jul.)>>

    • Scattered light
      • One of the hammering test (lower priority, open the chamber and check)
      • OMC chamber vibration RMS (lower priority, open the chamber and check)
      • IMC scattered light by GigE camera (Explained avobe)
    • Line noise investigation by PEM
      • No action from DAC, SEO and noise budget team. Maybe skipped.
  • Working style (COVID-19 related)
    • From July, (If U-tokyo level became 0.5) we can work as usual(maybe), if you have a plan to visit KAGRA site, please contact to Yokozawa first

    • Situation is unclear, I will explain in this meeting.
  • Useful management tools
    • Easy communication : Slack
      • We want to start using the slack by communication. I will send the message to candidate
    • Task management : GitHub

    • Software management : GitHub

    • Papers : Overleaf

Jurnal paper issue

Details are here!

  • PTEP (2) : noise budget(K.Yamamoto)
    • Start investigation (?)
  • PTEP (3) : CAL, DET, PEM, GIF (Yokozawa) <<Submitted to CPC>>

  • Acoustic injection paper (Washimi) <<Analysis ON GOING>>

  • ICA for E-run/O3GK (Kume, Yokoyama) <<Analysis ON GOING>>

  • Portable PEMs (Yokozawa+) <<Start investigation>>

    • Target journal->to be discussed later (PTEP?)

    • Study of the new environmental noise investigation technique using the portable monitors and Chromebook(仮)
    • section
      1. Introduction
      2. Environmental noise
      3. Portable PEM2 : Chromebook type
        • 4.1 USB type PEMs
          4.2 Combination with Chromebook and USB tpye PEMs
          4.3 Recording system and offline analysis
          4.4 Vibration injection

      4. Examples of noise investigation
        • 5.1 44Hz vibration noise
          5.2 Sound and vibration from air conditioner and FFU
          5.3 Oshino-san, Shimode-san magnetic field with circuit
          5.4 Noise investigation at OMC chamber

      5. Conclusion
  • Acoustic reverberation paper (Washimi+Virgo) <<PLAN>>

  • Magnetic field paper (Washimi+) <<PLAN>>

  • Ground motion paper (Yokozawa+) <<PLAN>>

  • PEM summary note (Yokozawa+) <<PLAN>>

  • Other topics
    • 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
      • Non linearity noise study
      • Line noise investigation(Yokozawa+)

Preparation for O3c / O4

  • for O3c
    • Maybe, we don't need to discuss about O3c
  • Schedule for O4
    • Expanded style chief meeting was held in 6/15
      • Jul. - Aug. DRFPMI lock trial
        • Apply sensor correction to SR suspensions
      • After them, we will start the upgrading tasks
    • PEM tasks for O4 will be discussed after this meeting with SEO
      • GND issue
      • Cabling issue
      • New PEM(?)
  • for O4 preparation
    • GND issue

      • We found new ground in the center area
      • We started the rack design with AEL people
    • cabling (github204)

    • ondotori (github205)

    • water fluid (github207)

    • read out of the lightning sensor (github182)

    • RF monitor
    • tiltmeter
    • RI detector
      • Rn : contact person -> Guillaume Pronostさん (ICRR, SK)

      • cosmic-ray : plastic scintillator?
      • gamma/neutron : chikauchu
    • gravity gradient (Newtonian noise)
      • Superconducting Gravimeter
      • TOBA

Analysis report

  • Yokozawa
    • Study of the 116 Hz acoustic injection to REFL table
  • Washimi
    • Progress of the acoustic injection analysis
  • Fujikawa
    • Lock loss study
  • Progress of the ICA analysis
  • Omicron and hveto study(Someone)

Place for memo

KAGRA/Subgroups/PEM/Meeting/200626/Agenda (last edited 2020-06-26 15:43:27 by tatsuki.washimi)