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  * Preparation for the hammering test @ Y-end [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12497|klog]]
  * Sound reverberation study (KAGRA & Virgo)		   * Preparation for the hammering test @ Y-end
  * Noise around 100Hz
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  * Offline detchar report for the part of the PEM   * Coupling with calibration line
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  * shaker injection with FPMI[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11117|speaker@12/8]],[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11128|shaker@12/15]]
  * Master thesis[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10387|thesis]]		   * shaker injection with FPMI
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  * Lock loss study2
  * fujimopy 		  * Lock loss study
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Weekly PEM meeting

  • 2020/01/28(Tue) 16:00-(JST)
  • Regular meeting meeting (Japanese)

  • Web meeting with Zoom2 (Zoom2)

Agenda

General issue

  • Interferometer status
    • Finally, we can lock the PRFPMI
      • Transmittance laser power became 100 times higher than FPMI
      • Lock duration is about 30min at maximum
    • OMC commissioning is also ongoing

    • ~100Hz noise and line noise of the higher frequency -> PEM

  • New PEMs
    • We bought the ACO power supply, microphone and accelerometers(end of Feb.)
    • Basically the portable PEMs
  • PEM plan
    • PEM injection to optical table
    • Hammering test
    • Long term PEM evaluation
    • Turning off the instruments
    • Many microphone in the PSL room
  • Conference
  • PEM injection
    • Shaker injection1 (TTanaka, Yokozawa)
    • acoustic injection (TTanaka, Yokozawa)
      • PSL, REFL and AS table injection
      • Analysis is ongoing
    • magnetic field injection (Niigata Tanaka, Fujikawa, Yokozawa)
      • Effect of the air cooler magnetic field
      • AS, REFL table injection
      • He is writing the thesis

Each progress

  • Yokozawa
    • Planning toward the O3 run
    • IX. IY microphone
    • Instrument switch off
  • Washimi
    • Preparation for the hammering test @ Y-end
    • Noise around 100Hz
  • Kozakai
    • Coupling with calibration line
  • TTanaka(ICRR)
    • shaker injection with FPMI
  • Fujikawa
    • Lock loss study
  • TTanaka(Niigata)
    • Magnetic field from air cooler and compressor
    • Magnetic field injection to AS and REFL table
  • etc

KAGRA/Subgroups/PEM/Meeting/200128/Agenda (last edited 2020-01-28 13:59:39 by chihiro.kozakai)