• KAGRA
• Subgroups
• PEM
• Meeting
• 191119
• Minute

Weekly PEM meeting

• 2019/11/18(Tue) 16:00-(JST)
• Regular meeting meeting (Japanese)

• Web meeting with Zoom2 (Zoom2)

Kamioka : tomaru, washimi, ttanaka, yokozawa(home),kozakai(home), ohkawa, fujikawa, tnt

Agenda

General issue

• Meeting time

  • 17:00-18:00 -> 16:00-18:00

• Interferometer status

  • MN OpLev dump filter (Yamada) -> limited to low freqency

  • Alignment Dither System (Nakano) -> FPMI lock becomes stable

• PTEP paper (-> After the begining of O3)

  • [kagra 03133] KAGRA Overview papers
    • Overview of KAGRA : (3) Det, CAL, PEM, data quality
  • Chrome Book project PEM?
• Conference

  • F2F meeting (4th and 5th Dec., 2019 @ RESCEU) http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/LCGT/Meeting/f2f/2019Dec

    • Washimi (PEM status)
    • Miyo (doctoral thesis)
    • TTanaka (master thesis)
  • JPS (2010/3/16-19 @ Nagoya)
    • registration : -12/3 14:00
• Morning PEM work in mine

  • Locate sensors (morning) -> data taking & analysis (afternoon, night)

  • Tentative : 18V DC noise(24Hz), Cryochamber vibration, Air compressors, FFU, Cooler, Noise search

    • -> purchasing some new sensors

• Database for the KAGRA characteristic lines

  • url

  • NoEmi is notready

• Visitors from LV
  • Anamaria from Livingston : 18 - 29 Nov.
  • Federico, Irene, Camilla (input optics) + Francesca from Virgo : 11/26-12/7 (2 weeks@KAGRA, 1 weeks@NAOJ)
    • O3 Octr. break summary : in the next weekly comisshoning meeting
      • リクエスト：ノイズハンティングストラテジー

    • LVK PEM meeting (11/26) 16:00-18:00

  • Fujikawa, TNTanaka 11/24-12/3

Each progress

• Yokozawa

  • ISS (oup of loop) : 46Hz -> DARMとは微妙に周波数が違い、コヒーレンスは見えない

    • 水冷クーラー(IYC)？ 機械系の共振なら、ゴム or M2052合金
• Washimi

  • Slow monitor page https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/PEM/SEM/

  • Coherence study between FPMI & PEMs (on-going)

  • Polish-up of Acuostic reverberation time (on-going)
• Kozakai
  • Trigger analysis with silent run
    • いろいろupdate

      O3前にDetChar ER run

• TTanaka(ICRR)
  • Acoustic injection with FPMI (+ Washimi, Yamada, TNTanaka)

• Mori

• Fujikawa

  • Lock loss study PEMmtg_191119lock.pdf

  • fujimopy
  imc signal : 2 peak?
• TTanaka(Niigata)
  • magneticfield from IYC air cooler