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Editor: TakaakiYokozawa
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 * 2020/03/06(Fri) 16:00-(JST)
 * Regular meeting meeting (Japanese) 		 * 2020/03/06(Fri) 14:00-(JST)
 * Regular meeting (Japanese)
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  * Average ~250kpc BNS detection range   * Maximum 500kpc BNS detection range
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  * 3/10 - commissioning break(?)   * If microseismic motion is large, we could not lock the interferometer
  * 3/10 - commissioning break
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 * Maintenance day (2020/03/03)
  * I asked SEO about following works
  * If you have more request, please let Yokozawa or Washimi-san know first.
  * 1. (Highest priority from PEM team)
   * Go inside the mine and move the PEMs placed at OMC legs to next noise target.
   * Next target is under discussion(Candidate is IXC area).
   * Change the position of the speaker to around POP area
   * We don’t need the interferometer during this work.
   * 1 hour work.
   * Yokozawa, Washimi
  * 2. (If possible)
   * Go inside the mine.
   * Turned on the all FFUs(~5min) to evaluate the noise from FFUs.
   * If we can observe the noise from FFUs in the sensitivity curve, we can consider next target.
   * If we cannot observe the noise, current noise limit may not come from the sound inside the clean area.
   * We need the interferometer during this work.
   * 10min work
   * Yokozawa, Washimi
  * 3. (If possible)
   * Go inside the mine
   * Hammering test to the cryochambers and ducts and so on to investigate the vibration effects.
   * We need the interferometer during this work.
   * Also, the hammering test PR and IMC area is essential		  * Commissioning break (2020/03/10 9 am -03/24 9 am)
  * After the commissioning meeting, I and Washimi-san make the schedule.
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   * Shaker and Acoustic injection
    * PSL, REFL and AS table injection again
    * Saturday afternoon(2/29) between the lock loss and observing state		    * Acoustic injection
    * Acoustic injection to PSL room was done
    * Acoustic injection to REFL table was done.
     * We set additional accelerometers to the leg of the MCF chamber ground, IMMT1/ISS and PRM chamber leg [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13293|klog13293]]
     * Analysis is ongoing by Washimi-san ant TTanaka-san
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   * Seismic motion flag
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  * Set portable PEMs to the some point for the O3 run
   * Now, the legs of the OMC
   * Next target is IXC or PR2-BS or somewhere PRs or IMC area.
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  * JPS (2020/3/16-19 @ Nagoya)-> Cancelled
    * Yokozawa, TTanaka
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  * Core to core application
   * Miyoki-san suggested to visit Virgo to join the commissioning as the PEM team
   * If you have interested in please let me know
   * Other interesting conference? Deadline is 29th Feb.
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 * Application of the author list
  * [kagra 03345] from Somiya-san e-mail
  * Deadline : 29th Feb.
  * エフォート率など相談がありましたら横澤までご連絡ください。

 * PEM meeting
  * Tuesday may be a maintenance day
  * I want to move PEM meeting to Friday and discuss what should we do during maintenance day.
  * Earlier time is better?
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 * Yokozawa
  * Discussion about the list of the general issue
  * Current line noise identification
  * PEM coherence search to the longer locked data
  * GND issue		  * Discussion about the list of the general issue (Yokozawa)
 * Bruco analysis (Yokozawa)
 * PEM coherence search to the longer locked data (Yokozawa)
 * GND meeting report (Yokozawa)
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 * Washimi
  * Investigation the environment around the OMC area [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13181|klog13181]] -> [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13197|klog13197]]
  * Investigation the water pump [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13199|klog13199]]
  * 		 * Acoustic injection result (Washimi, TTanaka)
 * Seismometer tilt coupling (Washimi, Miyo)
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 * TTanaka
  * 23.3Hz noise investigation

 * Yuzurihara
  * Updated Pastavi
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12872 | Pastai update : Add button for h(t) channel, Taking overlap in PSD estimation]]
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13194 | Pastai update : Added mass-range estimation]]		  * 23.3Hz noise investigation (TTanaka)

Weekly PEM meeting

  • 2020/03/06(Fri) 14:00-(JST)
  • Regular meeting (Japanese)

  • Web meeting with Zoom2 (Zoom2)

Agenda

General issue

  • Interferometer status
    • Observation run started without O3 joining
    • Maximum 500kpc BNS detection range
    • Lock duration is 1h -4h
      • Alignment dependence
    • Duty cycle ~65%
      • We need ~1h for initial alignment
    • If microseismic motion is large, we could not lock the interferometer
    • 3/10 - commissioning break
  • Commissioning break (2020/03/10 9 am -03/24 9 am)
    • After the commissioning meeting, I and Washimi-san make the schedule.
  • PEM tasks during observation run
    • PEM injection
      • Acoustic injection
        • Acoustic injection to PSL room was done
        • Acoustic injection to REFL table was done.

          • We set additional accelerometers to the leg of the MCF chamber ground, IMMT1/ISS and PRM chamber leg klog13293

          • Analysis is ongoing by Washimi-san ant TTanaka-san
    • Hammering test

      • 20/01/21 Minute

      • Hammering tests to the OMC, SRs, BS and PR2 were done [http://klog.icrr.u-tokyo.ac.jp/osl/?r=13138|klog13138]

        • There is large excitation when we touched the legs of the OMC chamber
        • But we concluded that vibration of the logs of the OMC chamber were not the dominant noise source in the current sensitivity
        • Next target of investigation is the duct between PR2 and BS
          • Candidate of the 60-90Hz noise
    • Discussion about the PEM flags
      • This may not be used during O3 run, but it is good practice toward the O4 run
      • Help the RRT(Rapid Response Team, quick discussion for the event submitted to the GraceCB)
      • Seismic motion flag
    • Evaluate the effect of the FFUs and vacuum pumps by turning on during interferometer lock
      • If the excitation detected, we have to consider about the FFUs which are working.
  • Conference

    • F2F (2020/4/17-20 @ Kashiwa) wiki

Each progress

  • Discussion about the list of the general issue (Yokozawa)
  • Bruco analysis (Yokozawa)
  • PEM coherence search to the longer locked data (Yokozawa)
  • GND meeting report (Yokozawa)
  • Acoustic injection result (Washimi, TTanaka)
  • Seismometer tilt coupling (Washimi, Miyo)
  • 23.3Hz noise investigation (TTanaka)

KAGRA/Subgroups/PEM/Meeting/200306/Agenda (last edited 2020-03-06 13:58:04 by tatsuki.washimi)