Weekly PEM meeting

• 2024/05/31(Fri) 17:00-
• Regular meeting

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

General announcement

• KAGRA Regular Young Researcher Meeting
  • Next 19th June (Wed) 17:00-(JST)

  • https://dac.icrr.u-tokyo.ac.jp/KAGRA/MRYRM/MEETING20240619

• Several Virgo ENV member have some plan to visit KAGRA about 1 month
  • One month around Nov.
  • They are also thinking about visiting LIGO
  • KAGRA would still be commissioning phase
  • Plan
    • Noise hunting (PEM injection)
    • Magnetic injection
    • Additional NN measurement
    • Other
• 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

• 2024 Annual Meeting of the Physical Society of Japan
  • Start the registration
• GWPAW
  • England (2024/05/27-31)

• Other meetings url

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

Business travel

• To Kamioka
  • Aogaku (6/23-6/27)
• From Kamioka
  • Washimi (6/3,4 Naoj)

General issue

• Interferometer recovery
  • IMC Recovery : Done (Similar situation around O4a)
  • hammering test toward future blasting (Done)
  • IFI, IMM, PRM
    • Pumping down : Done
  • Center area
    • Acceptance check(31st May)
    • Closing (June)
  • Type-A
    • IX : Pumping down/ health check ongoing
    • EX : Pumping down/ health check ongoing
    • IY : Pumping down/ health check ongoing
    • EY : Cleaning at EYA
      • Week of 20th Water cleaning
      • Week of 27th Test of pumping down
      • Week of 3rd June PCAL mirror cleaning
      • Week of 10th June PCAL alignment
  • OMC vibration
    • Need to treat something for stacks of OMC chamber
    • Schedule : Preparation(6/1-10, actual work 6/11-21)
  • IR/GR alignment recovery : Done
    • Check the beam position at various mirrors (adjust good alignment for O4a ASC)

• 出張PEM injection (planning form)

Jurnal paper issue

Details are here!

• Micro seismic analysis (Hoshino)
  • Submit to PTEP (2nd submission)

  • Overleaf

  • http://arxiv.org/abs/2306.12437

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

Preparation for O4b

• 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
• Sato
  • Sound source analysis
• Kume

  • PR3 line injection klog25670

  • Noise subtraction
• Nishizawa
  • Water newtonian noise
  • Magnetic field analysis
• Washimi
  • Vibration test around IMC area (Yokozawa?)
  • OMC vibration test
• Yokozawa
  • Additional Shindo monitor with raspberry pi

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter