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 * Join : Yokozawa, Oshino, Terrence, Fabian, Washimi, Kozakai, Miyo, Federico, Jan, TTanaka, Irene, Okawa, Fujikawa, Mori, Kaihotsu, controls, Yuzurihara, Yamamoto, Takahashi
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    * light, compact PC, touch pads, type-A port
    * microphone, accelerometer, magnetometer
    * Portable microphone make easily
    * Visiting virgo
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    * Long term seismic motion
    * One seismometer analysis (Xend seismometer)
    * 3rd topic uses tow sesmometers
    * Be care of the treatment of the data quality
    * How about the time variance at the higher frequency region. (water flow?)
    * or human activities (on winter season) but activities was too small
    * very nice!
    * First peak is 60mHz-80mHz, similar analysis was done by Virgo team
    * Focusing on the very low frequency region by band limited analysis
    * Correlation and analysis
    * how to obtain phase velocity? Based on mark method.
    *
Line 24: Line 41:
  * Federico, Irene   * Federico, Irene, Jan
Line 26: Line 43:
    * Trouble of the photo diode
    * Glitches trouble, shorter livetime
    * injection system to identify the glitch
    * Large glitch makes worse sensitivity
    * Magnetic noise injection and evaluate the transfer function
    * optical bench fluctuated by magnetic noise, making the scattering.
    *

Minute of PEM meeting

  • Date: 2019/7/16 17:00-18:00(JST) 10:00-11:00(CEST)
  • Attendance:
  • English meeting
  • Join : Yokozawa, Oshino, Terrence, Fabian, Washimi, Kozakai, Miyo, Federico, Jan, TTanaka, Irene, Okawa, Fujikawa, Mori, Kaihotsu, controls, Yuzurihara, Yamamoto, Takahashi

=== Agenda ===

  • General issue
    • 1st Engineering run Jun 8th (Xarm cavity)
    • 2nd Engineering run Jul 13th (MICH)
  • each member progress
    • Yokozawa
      • KAGRA detector status

      • Update of the KAGRA PEM from last meeting pdf

    • Washimi　slide

      • Chromebook project (portable PEM)
        • light, compact PC, touch pads, type-A port
        • microphone, accelerometer, magnetometer
        • Portable microphone make easily
        • Visiting virgo
      • Sound reverberation time analysis
    • Miyo

      • Trend of the ground motion Link

        • Long term seismic motion
        • One seismometer analysis (Xend seismometer)
        • 3rd topic uses tow sesmometers
        • Be care of the treatment of the data quality
        • How about the time variance at the higher frequency region. (water flow?)
        • or human activities (on winter season) but activities was too small
        • very nice!
        • First peak is 60mHz-80mHz, similar analysis was done by Virgo team
        • Focusing on the very low frequency region by band limited analysis
        • Correlation and analysis
        • how to obtain phase velocity? Based on mark method.
    • Kozakai, Yuzurihara
      • Introduction of the glitch analysis
    • Federico, Irene, Jan
      • Virgo PEM
        • Trouble of the photo diode
        • Glitches trouble, shorter livetime
        • injection system to identify the glitch
        • Large glitch makes worse sensitivity
        • Magnetic noise injection and evaluate the transfer function
        • optical bench fluctuated by magnetic noise, making the scattering.
    • etc
  • github progress

KAGRA/Subgroups/PEM/Meeting/190716/Minute (last edited 2019-07-16 18:33:08 by TakaakiYokozawa)