Weekly PEM meeting

• 2019/11/12(Tue) 17:00-(JST)
• Regular meeting meeting

• Web meeting with Zoom2 (Zoom2)

Agenda

• General issue
  • Interferometer status
    • We are fixing the ALS(Arm Length Stabilization system) problem.

    • Long silent run at 2nd Nobember (klog11312)

    • See the detail in url

    • Silent run -> Some excitation(including calibration line) -> PEM injection -> Hardware injection

• PTEP paper
  • [kagra 03133]
  • KAGRA Overview papers
  • Overview of KAGRA : (3) Detchar, calibration, physical environment, data quality
• Next F2F meeting
  • RESCEU
  • 4th and 5th Dec., 2019
  • 1 slot Washimi-san will have a talk
  • If you plan to write master/doctor thesis, please let me know
    • TTanaka
• Chrome Book project (Portable PEM researcher)

  • http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Portable

  • We prepared two PEM Chromebook
  • Start writing paper (PTEP?)
• PEM injection
  • Shaker injection1 (TTanaka, Yokozawa)
  • acoustic injection (TTanaka, Yokozawa)
  • magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
• Weekly PEM measurement
  • Friday (+every morning) is weekly PEM measurement
  • Understanding the effect of the instruments, search the origin of noise, and so on
  • Tentative : 18V DC noise(24Hz), Cryochamber vibration, Air compressors, FFU, Cooler, Noise search
• Database for the KAGRA characteristic lines

  • url

  • Fixed bugs
• 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)

    • LVK PEM meeting (11/26)

  • Fujikawa, TNTanaka 11/24-12/3
• Each progress
  • Yokozawa
    • Current serious noises
      • 24Hz noise (100V AC + AA?)
      • MICH control noise
      • Coherent with ITMX MN YAW
      • Coherence with ITMY TM PIT
    • Daily summary page
  • Washimi

    • Summary of coherence study between PEMs and DARM displacement (pdf)

  • Washimi, Yamada, TTanaka

    • IXC vibration Yamada (pdf)

  • Kozakai
    • Trigger analysis with silent run
  • TTanaka(ICRR), Washimi, TTanaka(Niigata), Yamada
    • Acoustic injection with FPMI
  • Mori

    • Vacuum pump vibrationStopVacuumePump.pdf

  • Fujikawa, Mori

    • fujimopy PEMmtg_191105fmpy.pdf

    • Line amplitude web page
  • Fujikawa, Washimi

    • Lock loss study PEMmtg_191105lock.pdf

  • TTanaka(Niigata)
    • Preparation of the coil
    • 24Hz noise situation
  • etc