Weekly PEM meeting

• 2020/10/09(Fri) 17:30-
• Regular meeting

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

Agenda

Conference issue

• KIW7
  • The 7th KAGRA International Workshop (National Central U., Taiwan), Dec. 18-20, 2020 (F2F meeting on Dec. 17-18)
  • Maybe online style for Japanese member
• (Next JPS meeting is also online-meeting)　

General issue

• Interferometer status
  • RSE lock trial
    • Continued to 12th Oct. at maximum
    • New suspension damping (modal damping)
    • DRMI lock
    • More stable DRMI operation than before.

• Interferometer schedule JGW12041

  • - 12th Oct. RSE lock trial
  • 5th Oct. - 19th Oct. Start the cleaning
  • 15th Oct. - 21st Oct. Warming up cryogenic ducts(IX, IY, EY)
  • 14th Oct. blackout (13th, 15th working date for blackout)
  • 19th Oct. - 23rd Oct. Clean work by company
  • 22nd Oct. - 25th Oct. break vacuum
  • 26th Oct. - Open chambers
• Working style (COVID-19 related)
  • Some collaborator came to Kamioka. Please contact to Yokozawa if you plan to go to Kamioka.
• KAKENHI proposal limit
  • NAOJ : Oct. 8
  • ICRR : Mostly end of Oct.(4th week deadline)
  • JSPS : Nov. 5 16:30 JST (final limit)

Discussion item

• PEM measurement during blackout

  • Discussion in the report by Washimi JGW-G2012095

  • Prepare the DAQ during blackout
  • Seismometer + magnetometer + Infrasound microphone + GND
• PEM DAQ racks
  • Use only IX and IY racks
  • Move the position of IX and IY racks
• New PEMs toward O4
  • Many microphone
    • Not only tables but also booth
  • Position of magnetometer
  • Position of seismometer
  • Additional PEMs to PSL room
    • 120Hz noise
    • glitch study
• If you have new idea or discussion item, please write here

Jurnal paper issue

Details are here!

• PTEP (2) : noise budget(K.Yamamoto) Check list, slack <<Analysis is ongoing>>

  • Environmental part
    • Acoustic noise : Refer our PEM injection paper.

      • We can discuss whether we use the result of pre-O3 study for the noise budget paper.

    • Seismic noise : summarise the actual seismic nois during O3GK? (who?)

    • OMC leg vibration : 12th - 16th Sep. ?

    • AC power lines : Coherence analysis is done (http://klog.icrr.u-tokyo.ac.jp/osl/?r=14848, Washimi)

    • Magnetic noise : skipped in this paper?

    • Newtonian : seismic newtonian -> from PTEP1 (or Francisca?) / water fluid newtonian -> skipped / air density -> skipped

  • We will held a noise budget meeting to summarize the current status, before the starting of heavy mine work. Details will be announced by KYamamoto-san(ToyamaU) soon later.

• PTEP (3) : CAL, DET, PEM, GIF (Yokozawa) <<Submitted>>

• Acoustic injection paper (Washimi) <<1st DRAFT CIRCULATION>>

• ICA for E-run/O3GK (Kume, Yokoyama) <<Analysis ON GOING>>

• Portable PEMs (Yokozawa+) <<Start investigation>>

Preparation for O4

• PEM tasks for O4 will be discussed after this meeting with SEO
  • GND issue
  • Cabling issue
  • Cleaning the center area
• Temperature control
  • Cooler ON, compressor ON, FFU ON, ...
  • IYC FFU glitch
  • Re-start the FFU on work after 7th Oct.
• PEM Rack arrange
  • There are discussion about DAQ of the KAGRA PEM channels. PEM channels may be assigned in the IX0 and IY0 racks.
    • Less effect from other models(less data loss)
    • Change the place of the IX0 and IY0 rack (next to MCF and BS chamber?)

    • plan : GoogleSpreadsheet

• for O4 preparation

  • GND issue

    • We measured the potential difference for SRM and PR2 rack
      • Need the investigation more

  • water fluid (github207)

    • Discussion with Furuta-san & a company is started

    • meeting with company persons : 10/7 13:00~ (DONE)

  • read out of the lightning sensor (github182)

  • Infrasound monitor @ Atotsu, Mozumi, tunnel (+ Toyama?)
    • if accepted
  • PEM injection for O4
    • Large speaker @ End station
    • Magnetic injection by large coil

• After O4
  • RF monitor
  • Tiltmeter
  • RI detector

    • Rn : contact person -> Guillaume Pronostさん (ICRR, SK)

    • cosmic-ray : plastic scintillator?
    • gamma/neutron : 新学術地下宇宙
    • start from a geiger counter?
  • Newtonian noise
    • Accelerometer for wall
    • Relative temperature monitor
    • Many seismometers
    • Superconducting Gravimeter
    • TOBA

Progress report

• Yokozawa

  • Preparation for blackout GitHub214

  • Blasting at the atotsu area.
• Washimi

  • Aacoustic injection paper overleaf

    • 1st draft circulation : JGW-P2012122

    • paper meeting : in the 4th week of October?
• Kume
  • ICA analysis related with PEM

Place for memo