Weekly PEM meeting

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

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

General announcement

• 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

• Please reserve the hotel in Hokkaido if you plan to join the Autumn JPS meeting next time
• GWADW
  • Australia (2024/05/12-18)
• 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
  • None
• From Kamioka
  • None

General issue

• Interferometer recovery
  • IMC Recovery : Done (Similar situation around O4a)
  • Plan to have a hammering test toward future blasting
  • IFI, IMM, PRM
    • Pumping down : Done
  • 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
  • OMC vibration
    • Need to treat something for stacks of OMC chamber
    • Discussed in the recovery meeting
  • IR/GR alignment recovery : Ongoing
    • Check the beam position at various mirrors
    • Cleaning PR2/PR3

• 出張PEM injection (planning form)

Jurnal paper issue

Details are here!

• Micro seismic analysis (Hoshino)
  • Submit to PTEP

  • Overleaf

  • http://arxiv.org/abs/2306.12437

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

Preparation for O4b

• [Important] Strategy for reducing the effect of the acoustic noise
  • Discuss in Yokozawa part
• 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
  • OMC vibration test
• Yokozawa
  • Strategy for reducing the acoustic noise

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter