Weekly PEM meeting

• 2023/12/22(Fri) 17:00-
• Regular meeting

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

General announcement

• 2023年も大変お世話になりました。
  • PEM subsystemは今年もたくさんの結果を残すことができました。ありがとうございます。
  • 2024年もよろしくお願いします。
• Kamioka visiting plan
  • Yokozawa and Washimi-san have several budgets (共同利用)
    • So we want to call not only PEM members but also KAGRA members who are interested in onsite.
    • If you want to visit Kamioka, please contact Yokozawa

  • Hoshino & Sato will stai Kamioka on February (3weeks?)

• O4b
  • Break : mid-January - mid-March, 2024
  • Virgo : will join in March
  • KAGRA : Three-month observation around here
• O4a noise budget paper
  • If you have a plan to write the paper using O4a data and PEM, please let me know.

Meeting and Conference issue

• VK PEM meeting (Postponed)
  • 2023/12/21(Thu) 19:00-(JST), 10:00-(UTC), 11:00- (CET)
  • January next year.
• ET SCB/SPB/ANM workshop @ Nikhef, December 6-7

  • https://indico.nikhef.nl/event/4820/

  • Washimi attended in person
• KAGRA F2F @ Hongo, 12/14-15

  • https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2023December

  • The registration deadline is on November 27 (Mon) at 24:00 JST.
  • Students who are writing their thesis with KAGRA data need to report it in the F2F.

  • DeepClean meeting on 12/13 15:00-

    • Annouce later
• LBGT@Tokokoku

  • https://www.lowbg.org/ugap/ws/lb2023/index.html

  • workshop of underground experiments
  • Washimi will have a presentation of rain, snow, underground water
  • Miyamoto-kun will have a poster presentation.
• JPS (online) 2024/3/18-21

  • https://www.jps.or.jp/activities/meetings/spring/spring_index.php

  • 一般講演申込（※早期参加登録/概要集申込、原稿送信含む）
    • Hoshino (Earthquake)
    • Miyamoto (weather)
    • Sato (Sound)
    • Takatani (Noise subtraction)

• Other meetings url

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

Business travel (except for conferences)

• To Kamioka
  • Hoshino (February?)
  • Sato (Febryary?)
• From Kamioka
  • No plan

General issue

• Strategy (JGWDoc15522)

• Cooling down
  • IX,EX,EY : Radiation shield cooling down : 84-88 K
  • EY : Started the cooling down duct shield
    • 200 K

  • Temperature change url

  • After starting the cooling down after measuring the Q-value of sapphire fiber
• Interferometer operation
  • PRFPMI DC readout Succeeded
    • Need to reuducing the DARM RMS to be stable operation
      • Resonant frequency measurement
      • Wideband ASC
      • Treatment for large micro-seismic
  • Initial alignment procedure
    • Touch the alignment of GRX and GRY
• Q value measurement
  • Mirror Q value measurement at IX, EX, EY

    • Current summary : JGWDoc15445

  • Suspension (violin) Q value measurement
• New IP control
  • Ongoing
• Strategy for noise hunting

  • klog26848

• 出張PEM injection (planning form)

Jurnal paper issue

Details are here!

• Micro seismic analysis (Hoshino)
  • Submited to Physica Scripta

  • Overleaf

  • http://arxiv.org/abs/2306.12437

• Acoustic reverberation time paper (Washimi+, Sato?)
  • Suspend
  • Re-measurement before O4?
• TCam paper
  • Writing ongoing

Preparation for O4b

• Snow monitor
  • Ongoing
• PEM installation
  • Waiting the timing of TMSX and TMSY
• Evaluation of newtonian noise
  • Anoop and Washimi
• Investigation of the PEM injection
  • Magnetic injection
• Voltmeter preparation
  • AC power monitor installation
  • DC power monitor installation

Progress report

• Yuzurihara
  • Pastavi

  • Data Quality Report slide

  • Data quality evaluation
• Hoshino
  • Seismic motion analysis
• Sato
  • Sound source analysis
• Miyamoto
  • Weather analysis
• Takatani
  • Noise subtraction with machine learning
• Kume

  • PR3 line injection klog25670

  • Noise subtraction
• Nishizawa
  • Water newtonian noise
  • Magnetic field analysis
• Washimi
  • Magnetic field analysis
  • Snow monitor
• Yokozawa
  • Noise budget in current IFO

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter