Weekly PEM meeting

• 2025/06/13(Fri) 17:00-
• Regular meeting

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

General announcement

• KAGRA F2F
  • 19th - 21nd Sep.
    • Yokozawa cannot join the F2F meeting 19th (Work for the University)
  • If you plan to have a discussion, visiting Analysis building (Difficult to enter the mine) please contact to me
• JPS meeting registration

  • https://www.jps.or.jp/activities/meetings/annual/annual-index.php

  • Meeting : 9/16 - 19
  • Registration : 6/10 - 7/3
  • Need the hotel reservation as soon as possible
  • If you plan to have a presentation with PEM issue in next JPS meeting, please contact to Yokozawa and Washimi-san
  • Do we need the satellite meeting?
  • Talk plan
    • 横澤：O4cと気象(予定)
    • 小原：O4c中の地震とロックロス
    • 鷲見：シューマン共振通年観測
    • 安部：シューマン共振日周変動・季節変動
    • 覺：SGWBラジオメトリー

• O4c url

  • Now commissioning break, Re-start 4th June 11th June end 7th Oct. 18th Nov.

    • 4th - 11th June, engineering run : no observation flag, keep IFO as much as possible
    • 9th - 20ht June, combination with commissioning and night silent run
      • After then, basically observation run.
• Bi-weeklky VK PEM meeting
  • To discuss the analysis during their measurements
  • 11th June (Wed) 17:00 -
  • ET cryo meeting 24th June

Meeting and Conference issue

• Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK

• ICRC 2025: 2025/07/15-24 @Geneva (Switzerland)
• TAUP 2025: 2025/08/24~30 @Sichuan Province of China
• KAGRA F2F @ ToyamaU

  • registration : url

    • Deadline : 6th July.
  • 19〜21 Aug.
• JPS at Hiroshima
  • 16th - 19th Sep.

• Slow to fast earthquake at Kochi url

  • 24th - 26th Sep.

• Other meetings url

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

Business travel

• To Kamioka
• From Kamioka
  • Yokozawa (Hongo, 7/13 - 19)
  • Yokozawa (ICRR young, 7/30 - 31)
  • Yokozawa (Hiroshima, Kochi, 9/15 - 27)
  • Washimi (Itary, 6/7 - 7/13)
    • 6/9 - 6/11 : Virgo
    • 6/13 : Roma
    • 6/16 - 7/9 ET SPB work at Sardegna
    • 7/11 : Padova

  • 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
  • We start the observation run
  • Several commissioning planned

Progress report

• Nishizawa, Taruya, Himemoto
  • Water Newtonian noise
  • Schumann Resonance
• Kaku
  • Magnetic field analysis
• Abe
  • Parameter estimation of the schumann resonance
• Murofushi
  • Earthquake and GIF analysis
• Obara
  • Earthquake and suspension
• Ohashi
  • Microseismic noise with machine learning
• Kume, Ueno
  • Noise subtraction
• Yokozawa
  • Noise investigation
• Washimi
  • PEM injection @ Virgo
  • Microseism forecast @ Virgo

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter