Weekly PEM meeting

• 2022/06/24(Fri) 17:00-
• Regular meeting

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

General announcement

• (LVK inner information) O4 will start from March 2023
• Important discussion with ET people
  • Magnetic field
  • Meeting of Seismic noise and infrastructure noise (11th July?)
  • If you want to join the discussion, please let Yokozawa know.
• Visiting to Virgo site
  • By C2C budget
  • Contact to Virgo people
  • End of October -
• Task list 2022
  • Author list committee ask us to make task list 2022
  • Deadline Jun.4.

  • Task list 2021 pdf

  • If you have question or comments, please let Yokozawa know.

Meeting and Conference issue

• ET underground infrastructure and noise meeting
  • July 11, 11:00am CEST
• KAGRA F2F meeting
  • August 1-3
  • Hongo campus

  • Registration url

  • Wiki page url

• LVK meeting
  • 12-15 September
  • Cardiff Unviersity, UK
• JPS meeting

  • url

  • 2022/9/6-8 Okayama
    • Washimi : Infrasound
    • Hoshino : Seismic and ocean
• 日本天文学会
  • 9/13-15
  • 新潟大学
• ET symposium in Budapest, Hungary
• GR23 in Beijin, China
• GWPAW2022 in Melbourne Australia
• GRASS 2022 in Padova, Italy

• Other meetings url

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

Business travel

• Depending on the situation of COVID-19
• To Kamioka
  • No
• From Kamioka
  • No

General issue

• Overall schedule
  • 6/20 - 6/24 Leak of End Y
  • 6/27 - Repair the leak point and start the pumping down
  • 6/20 - 7/1 Suspension commissioning Type-Bp
  • 7/4 - 7/8 Interferometer commissioning
  • 7/11 - 7/22 Suspension commissioning Type-B
  • 7/25 - 7/29 Acceptance check
  • 8/1 - Closing the center area
  • Mid size baffle installation
  • ISS installation
  • High power laser installation
• Procedure toward X arm commissioning
  • Radiation shield cooling Xend
    • IM temperature is ~90 K
    • Finesse is not changed
• Mid-size baffle

  • First contact -> Suspension health check -> Mid size baffle install

  • PR2 -> Done

  • SR2 -> Done

  • PRM -> Done

  • BS -> Done

  • PR3 -> Done

  • SR3 -> First contact

  • SRM -> Disassembling -> First contact

• Y arm commissioning
  • EY leak done : Repair the leak next Monday
  • IY : We will start the duct shield cooling, depending on the pressure level and health check
• Schedule

  • attachment

• Type-Bp's suspension health check
• PEM schedule
  • Re-installation of PEMs toward O4

• 出張PEM injection (planning form)

  • TAMA300 (June 22)

Jurnal paper issue

Details are here!

• PTEP (2) : noise budget(K.Yamamoto, Kokeyama, Washimi) JGW-P2113405

  • https://arxiv.org/abs/2203.07011

  • It has been accepted
• ICA for E-run/O3GK (Kume, Kobayashi)
  • Sibmitted to CPC
• Tonga paper (Washimi+)

  • Overleaf, JGW-P2214043

  • CPC circuration has been closed (6/21)
    • Many comments from Yokoyama-san (mainly English corrections)
• Micro seismic analysis (Hoshino)
  • writing

  • Overleaf

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

Preparation for O4

• MEDM screen script
  • Just by preparing the channel list, it can reconstruct easily
• Re-rolating the PEMs
  • IY0 re-location
  • Combination of MAG + barometer
  • Combination of SEIS + barometer
  • Minor change of End PEM channel
• Barometers and infrasound placement underground
• Magnetic field underground
  • Discuss with Virgo member next week
  • Fan, ...
• Seismic and infrastructure noise
• Magnetmeters for the Schumann resonance
  • ADU (Washimi)
  • Discussing with technicians (AEL, FCL)

• PEM injection (planning form)

  • Low-frequency sound injectorklog16829

  • Acoustic injection at X/Y-end
  • Magnetic injection (I want to start the preparation soon)
• After O4
  • RF monitor with mokugo
  • Tiltmeter
  • RI detector
  • Newtonian noise
• Discussion with DET members
  • Daily summary page PEM

Progress report

• Yuzurihara
  • Pastavi
  • Data Quality Report
  • Data quality evaluation
    • No special report
• Suzuki
  • Water simulation
• Hoshino
  • Seismic motion analysis
• Kume
  • Report of paper progress
• Fukunaga
  • Schumann resonance
• Kiyota
  • Take over Kobayashi-san's work
• Nishizawa
  • Magnetic field analysis
• Washimi
  • Rain fall and Water drain

    • JGW-T2214145

  • PEM works at TAMA300

    • Seismic and acoustic measurements http://www2.nao.ac.jp/~gw-elog/osl/?r=2993

    • hammering test http://www2.nao.ac.jp/~gw-elog/osl/?r=2996

• Yokozawa

  • Investigating the MN oplev glitch klog21153, klog21161

Place for memo

• Line noise list in O3a public data

• Summary page for KAGRA O3 vector dark matter