Weekly PEM meeting

• 2020/05/29(Fri) 16:00-
• Regular meeting

• Zoom2 : https://zoom.us/j/6676627462

Agenda

Conference issue

• JPS meeting

  • Online meeting web

  • deadline 6/4
• 新学術地下宇宙 (6/2-4)

  • Online meeting web

  • Washimi has an invited talk on 6/3 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

  • post commissioning

    • Vibration measurement for OpLevs (+Ushiba, 6/1,2)

    • 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)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)

Place for memo