Weekly PEM meeting

• 2024/03/01(Fri) 17:00-
• Regular meeting

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

General announcement

• Authorlist 2024
  • If you have an opinion, please let us know.
• O4b
  • Break : mid-January - mid-March, 2024
  • Virgo : will join in March
  • KAGRA : Three month during O4b(?)
• 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

• UGAP2024 @ Tohoku U 2024/3/4~6

  • https://www.lowbg.org/ugap/ws/am2023/index.html?LangP=JP

  • international conference of underground experiments
  • Washimi will have a presentation of lightnings and thunders
• 第4回新学術「地下宇宙」若手研究会 @ Tohoku U 2024/3/7~8

  • https://www.lowbg.org/ugap/ws/yr2023/index.html

• LVK meeting
  • Louisiana (2024/03/11-14?)
  • Yokozawa will have a talk about NN noise (?)
    • Water fluid
    • Infrasound
    • Atomospheric NN at TOBA
    • Snow monitor
    • Past gravity field measurement
• JPS (online) 2024/3/18-21

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

    • Hoshino (Earthquake)
    • Miyamoto (weather)
    • Sato (Sound)
    • Takatani (Noise subtraction)
• KIW11
  • Taiwan (2024/04/16-17)
  • Yokozawa and Washimi will join (Contents is not decided)
  • 4/19 afternoon with deepclean member
• GWADW
  • Australia (2024/05/12-18)
• GWPAW
  • Israel (2024/05/27-31)

• Other meetings url

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

Business travel (except for conferences)

• To Kamioka
  • Hoshino (2/11-23)
  • Sato (2/14-22)
  • Tagoshi lab students(2/19-20)
  • Miyamoto (2/26-3/2)
• From Kamioka
  • Washimi (3/3-9)

General issue

• Interferometer recovery
  • IMC
    • Suspension refurbishment : Mostly done
    • Alignment will start soon
  • Type-Bp
    • Suspension refurbishment : Mostly done
  • Type-A
    • IX
      • Magnet : Done
      • BF check : Done
    • EX
      • Magnet : Done
    • EY
      • Magnet : Done
      • BF check : Done
    • IY
      • Decided to open the chamber : warming up, N2 injection
  • Green alignment recovery
    • Found the GR beam in TMSX PD
    • PR3 alignment is good for oplev (before earthquake)
      • No POP table drift
• 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
  • First snow detected
• 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

  • 60Hz noise on PR2 OSEM https://klog.icrr.u-tokyo.ac.jp/osl/?r=28707

  • Lightning event in the O4a https://klog.icrr.u-tokyo.ac.jp/osl/?r=28731

• Yokozawa
  • Tapping test

    • JGWDoc15606

    • JGWDoc15616

    • JGWDoc15624

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter