Minute of PEM meeting

• Date: 2019/11/05 17:00-18:00(JST)
• Attend：Yokozaqwa, TNTanaka, Fujikawa, Ohkawa, Washimi, Mori, Kozakai, Yamada, Akutsu, Kaihotsu

Agenda

• General issue
  • Interferometer status
    • Now, we can lock the interferometer stably
    • ISS(Intensity Stabilization System) was implemented, better sensitivity

    • 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
• 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)
  • Shaker injection2 (Okutomi, Fabian)
  • acoustic injection (TTanaka, Yokozawa)
  • magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
  • RF injection (TTanaka, Washimi)
• Weekly PEM measurement
  • Friday is weekly PEM measurement
  • Understanding the effect of the instruments, search the origin of noise, and so on
  • Tentative : New vacuum pump, 18V DC noise(24Hz), Cryochamber vibration(46Hz), FFU, Noise search
• Database for the KAGRA characteristic lines

  • url

• Visitors from LV
  • Anamaria from Livingston : 18 - 29 Nov.
  • Federico, Irene, Camilla (input optics) + Francesca from Virgo : 11/18-12/7 (2 weeks@KAGRA, 1 weeks@NAOJ)
• 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
      • 週末のFPMIとPEMのcoherenceを見ていった。
      • 11HzのEXCにmagとの相関が見えたのですが、みに行った時間にはなかった、lockとの関係がある？
      • 1.3HzはETMYのgasが励起していて、それが影響していた可能性がある。
  • Washimi, Yamada, TTanaka
    • IXC vibration
  • Kozakai
    • Trigger analysis with silent run
  • TTanaka(ICRR), Washimi, TTanaka(Niigata), Yamada
    • Acoustic injection with FPMI
  • Mori
    • Vacuum pump vibration
  • Fujikawa, Mori

    • fujimopy PEMmtg_191105fmpy.pdf

    • Line amplitude web page
  • Fujikawa, Washimi
    • Lock loss study
  • TTanaka(Niigata)
    • Preparation of the coil
    • 24Hz noise situation
  • etc