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Editor: TakaakiYokozawa
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Editor: TakaakiYokozawa
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 * 2025/04/25(Fri) 17:00-  * 2025/05/02(Fri) 17:00-
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 * Schumann resonance paper review
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 * 「地震学(井出)」輪読ゼミ
  * 毎週木曜10時~
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  * 4/23,24 : From QUarks to Neutron Stars * [[https://indico2.riken.jp/event/5141/page/405-overview|url]]
   * Yokozawa will join the meeting
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   * Registration 15th May.
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  * Washimi (Tokyo 4/11)
  * Yokozawa (Tokyo 4/22-24)
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   * Latest sensitivity ~6.0 Mpc by adjusting the alignment offset    * Latest sensitivity 6.8 Mpc by adjusting the alignment offset
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    * For the more low power coil driver
    * Install the registance to reduce the circuit noise
    * Update the control
   * Searching the good alignment
    * By adding the offset to the ASC loop, we search the better sensitivity alignment
    * We need the OMC ASC (Beacon) to perform more stable
   * CARM noise investigation		    * Several peaks investigation
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    * Reported in commissioning meeting
    * Washimi-san will report it [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16652]]		     * Ongoing
  * Cooling down the suspension

Weekly PEM meeting

General announcement

  • O4c url

    • Now commissioning break, Re-start 4th June end 7th Oct.
      • Discussion about the engineering run
    • KAGRA will join this with 10 Mpc sensitivity
  • Bi-weeklky VK PEM meeting
    • To discuss the analysis during their measurements
    • Monday 17:00-(JST)

    • Next 28th Apr., 2025 12th May 2025

  • 休日シフト募集中
    • 三代木さんのメール参照

Meeting and Conference issue

  • 5/9~10 : JGWC研究会 @ JAXA相模原

    • url

    • 発表申込締切：2025年4月7日（月）
    • 参加登録締切：2025年4月21日（月）

  • 5/19~23 : GWADW2025 @ フロリダ url

  • 5/26~27 : KIW12 @ 上海 url

    • Registration 15th May.
    • Yokozawa will join the meeting

  • 5/26~30: ET symposium @ ボローニャ url

    • 締切：3/31

  • Other meetings url

If you have some presentations about PEM related, please contact to me.

Business travel

  • To Kamioka
    • Obara (4/29 - 5/1)
    • Ozaki (5/18-24)
    • Kaku+3M1 (5/18-24)

    • Kyoto U. DPRI & Korea NIMS (5/23)

  • From Kamioka
    • Yokozawa (China 5/25-28)
    • Washimi (Virgo/Roma/Sardegna/Padva, 6/10 - 7/12?)
      • Return Virgo's mini-ACC
      • ET SPB work at Sardegna : 6/16 - 7/4 or more

    • Washimi (Yamaguchi -> Hiroshima -> Kohch -> Okayama, 9/8-9/30?)

Jurnal paper issue

Details are here!

  • Non-linear ICA paper
    • The playground approved, preparation toward the submit
  • Schumann Resonance paper
    • Long term observation, seasonal variance
    • Amplified inside the mine
    • Others
  • O4(a+c) PEM paper
    • Start to investigate the topics
  • Microseism with machine learning
  • 1 Hz seismic motion paper
    • Start the investigation

General issue

  • Commissioning
    • PRFPMI
      • Latest sensitivity 6.8 Mpc by adjusting the alignment offset
      • Reducing the RMS of the DARM error
      • Several peaks investigation
        • 116 Hz noise is still mystery
          • Tapping test at Saturday
      • PEM injection test
        • Ongoing
    • Cooling down the suspension
    • Noise budget

Progress report

  • Nishizawa, Taruya, Himemoto
  • Kaku
    • Magnetic field analysis
  • Murofushi
    • Earthquake and GIF analysis
  • Ozaki
    • Nearby earthquake
  • Obara
    • Earthquake and suspension
  • Ohashi
    • Microseismic noise with machine learning
  • Kume, Ueno
    • Noise subtraction
  • Yokozawa
    • PEM investigation PR3 - PRM
  • Washimi
    • PEM injection

Place for memo

KAGRA/Subgroups/PEM/Meeting/250502/Agenda (last edited 2025-05-02 07:48:01 by TakaakiYokozawa)