• KAGRA
• Subgroups
• PEM
• Meeting
• 200529
• Minute

Weekly PEM meeting

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

• Web meeting with Zoom2 (Zoom2)

• member : Yokozawa, Washimi, Dan Chen, Kozakai, Ohkawa, Kume, Tomaru, Oshino, Fujikawa

Minutes

• JPS meeting
  • Yokozawa will have a talk about PEM summary
  • 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?)
• PEM meeting schedule
  • 16:00-17:00 Friday
• Paper issues

  • KAGRA summary paper(Yokozawa) <<Almost DONE>>

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

  • Portable PEMs (Yokozawa+)
    • Fix the contents and main result first
  • Ground motion paper (Yokozawa)

  • PEM summary note (Yokozawa+) <<ON GOING>>

  • Acoustic reverberation paper (Washimi+Virgo)
    • Start writing after the acoustic injection paper
  • Magnetic field paper (Washimi+)
    • 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
    • If rich contents, we should divide into several papers
    • Check the past schumann resonance paper
  • ICA analysis for E-run/O3GK (Kume, Yokoyama)
    • Start the code changing for the PEM injection data (before O3GK)
      • Is the time length (~100s) enough?
• for O3c
  • Ondotori maintenance
    • Change to AC adapta
    • Ask ondotori maker about the special power supply for KAGRA

  • FFU operation & particle counter (if we open the OMC)

    • Ask Kokeyama-san about particle counter
• for O4

  • cabling (github204)

    • IOO circuit part was completed, need to enter the mine
    • We have to make cable diagram before ask Gyousya
  • cosmic-ray/RI detector
    • ETが興味を持つ前にさっさと論文にするべき
    • 物品についてはSK, XMass, Kamlandに相談してみる。
    • fluxやdE/dxの観点から、宇宙線μよりもα線の方が影響が大きいか
      • 神岡鉱山はラドンの宝庫
      • 鏡の運動よりも、PDの空乏層の放射線損傷の方が効きそう
    • Investigate the effect of the radon to PDs and so on

      • 放射線耐性 -> 線源を買って加速試験

      • KAGRA坑内のflux -> プラスチックシンチレータなどで測定

      • 神田さんがプラシンで宇宙線の影響を調べている
  • Information from Tomaru-san
    • priorityはO4に置く O3cではなく。

    • OMCを開ける->リクエストを出す

    • 散乱光、IMC周りを開けた後ですぐに確認
    • ケーブルを抜いたりしたらノイズの振る舞いが変わる