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   * But, we need to check the accelerometer noise level.
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   * 6/12 : Day 2 : re-measurement of Day 1    * 6/11 : Day 2 : re-measurement of Day 1
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  * KAGRA summary paper(Yokozawa) '''<<Almost DONE>>'''   * KAGRA summary paper(Yokozawa) '''<<Submitted to CPC>>'''
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   * Study of the new environmental noise investigation technique using the portable monitors and Chromebook(仮)
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      3. Portable PEM1 : BNC type PEMs(Change the word)
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    * Now, the priority of O3c is lower. LVK discussed we should move to O4 preparation soon.
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  * for O4 (or later)   * for O4 preparation
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     * We found new ground in the center area
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==== Analysis report ====

  * Yokozawa
   * Study of the 116 Hz acoustic injection to REFL table[[attachment:PEM_meeting_200612.pdf|pdf]]

  * Washimi
   * Progress of the acoustic injection analysis [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11754|pdf]]

  * Omicron and hveto study(Someone)

Weekly PEM meeting

Agenda

Conference issue

  • JPS meeting
    • Online meeting web

    • Yokozawa will present about the PEM activity

General issue

  • Interferometer status
    • Now interferometer is "suspend mode" but post-observation
      • 6/1-6/5 Suspension noise budget, PEM injection
      • 6/8-6/12 Interferometer parameter measurements
    • Earthquakes at Hida area is serious
      • Frequency was reduced
      • But there are many earthquakes in Japan.
  • Tasks for post-commissioning
    • Vibration measurement for OpLevs (+Ushiba, 6/1,4)-> Done

      • But, we need to check the accelerometer noise level.
    • 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
      • Unclear : Day 3 : For each booth (mine work) -> noise budget

    • 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)
    • Line noise investigation by PEM
      • No action from DAC, SEO and noise budget team. Maybe skipped.
  • Working style (COVID-19 related)
    • We can do data analysis in your home. Let's check PEM data!
  • Useful management tools
    • Easy communication : Slack
    • Task management : GitHub

    • Software management : GitHub

    • Papers : Overleaf

Jurnal paper issue

  • KAGRA summary paper(Yokozawa) <<Submitted to CPC>>

    • Part of the KAGRA overview paper
    • PTEP (Overview of KAGRA : (3) Detector characterization, calibration, physical environment, and data quality)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+) '<<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
  • 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
      • Non linearity noise study
      • Line noise investigation(Yokozawa+)
      • ICA analysis for E-run/O3GK (Kume, Yokoyama)

Preparation for O3c / O4

  • for O3c
  • for O4 preparation
    • GND issue

      • We found new ground in the center area
    • 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 tablepdf

  • Washimi
    • Progress of the acoustic injection analysis pdf

  • Omicron and hveto study(Someone)

Place for memo

KAGRA/Subgroups/PEM/Meeting/200612/Agenda (last edited 2020-06-12 17:14:53 by tatsuki.washimi)