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Editor: TakaakiYokozawa
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Editor: TakaakiYokozawa
Comment:
Deletions are marked like this. Additions are marked like this.
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 * 2023/08/04(Fri) 17:00-  * 2023/08/18(Fri) 17:00-
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 * New KSC chair and vice-chair
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  * Poster abstract submission
   * ??
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  * ICRC 2023 [[https://amarys-jtb.jp/2023icrc/|url ]] 7/26 - 8/3
   * Nagoya
   * Yokozawa will present about KAGRA PEM (oral) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14827|proceedings]]
   * Washimi will present about Schumann resonance and SGWB (oral)
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  * Sorry, I could not follow all thing at current two weeks   * Cooling down
   * EX : Achieved 20 K in IM
    * Monitored the height by MNV oplev and TCam
     * The SUM value of MNV oplev decreased with temperature, that turned out the clipping by the viewport of radiation shield [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=26232|klog26232]]
     * Now recovered, but SUM decreasing continued
    * Serious frosting and finesse down detected
     * Turned on the heater at IM, after increasing 30 K, the finesse recovered
     * Still some frosting at AR side from picture [[ https://klog.icrr.u-tokyo.ac.jp/osl/?r=26336|klog26336]] and oplev sum[[ https://klog.icrr.u-tokyo.ac.jp/osl/?r=26308|klog26308]]
     * During PRFPMI locked, the temperature of IM gradually increased[[https://klog.icrr.u-tokyo.ac.jp/osl/?r=26358|klog26358]].

   * IX, IY, EY ongoing : about 110 K in IM (2023/08/18)
    * Temperature change [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/trendMon/finesse.html|url]]

  * Vacuum level trouble
   * EX : performance of one cryocooler became worse
    * No serious damage to the test mass
    * Plan to restart it around LVK meeting(September)
   * Yarm
    * Y-21 vacuum trouble
     * Now, by turning on the TMP, keep good vacuum level
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   * Some temperature oscillation when operating the new HPL    * Temperature drift would be smaller by tuning the temperature control
   * But if we increased the output laser power from PSL room, IMC cannot be locked.
   * Now operating the current old laser
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  * Increase the laser amp (current laser)
   * ~15 W at PMC		   * Alignment inside the PSL room
   * PMC alignment done(No so serious change)
   * GR alignment done (Increased the beam power)
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  * Interferometer operation with high power
   * Ongoing
  
  * Leak at OMC / Yarm
   * OMC leak stopped after removing the geophone
   * Y arm (and Yend) leak

  * Trouble at OMC DCPD
   * Repair at October?

  * Start the cooling down
   * X : 22 K
   * Other : 200 K

  * Optical table alignment
   * POP table		   * Interferometer operation
   * After checking the POP and REFL table again, and found one BS flipped.
    * Then, PRFPMI RF became more stable (One night lock)
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   * Cabling    * Outside magnetometer
    * DAQ system trouble? Washimi-san sent to company
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    * Re-cabling for OMC speaker
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    * No problem in AC power supplying
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  * Commissioning toward 10 Mpc

Weekly PEM meeting

General announcement

  • New KSC chair and vice-chair
  • Open the registration LVK meeting@Toyama
    • Poster abstract submission
      • ??
    • 2023/09/11-15
    • Including the F2F meeting

    • url

    • Welcome the visitor
  • KAGRA visiting plan
    • If you want to visit Kamioka, please contact to Yokozawa

Meeting and Conference issue

  • LVK meeting at Toyama
    • 11-14 September 2023
    • KAGRA F2F meeting on Sep. 15
  • JPS meeting (Tohoku U)
    • 16-19 September 2023
    • Presentation about PEM
      • Yokozawa (Status)
      • Washimi (Noise hunting)
      • Hoshino (Seismic forecast)

  • Other meetings url

If you have some presentation about PEM related, please contact to me.

Business travel (except for conferences)

  • To Kamioka
    • Hoshino(8/8 - 10)
  • From Kamioka
    • No

General issue

  • Cooling down
    • EX : Achieved 20 K in IM
      • Monitored the height by MNV oplev and TCam

        • The SUM value of MNV oplev decreased with temperature, that turned out the clipping by the viewport of radiation shield klog26232

        • Now recovered, but SUM decreasing continued
      • Serious frosting and finesse down detected
        • Turned on the heater at IM, after increasing 30 K, the finesse recovered

        • Still some frosting at AR side from picture klog26336 and oplev sumklog26308

        • During PRFPMI locked, the temperature of IM gradually increasedklog26358.

    • IX, IY, EY ongoing : about 110 K in IM (2023/08/18)

      • Temperature change url

  • Vacuum level trouble
    • EX : performance of one cryocooler became worse
      • No serious damage to the test mass
      • Plan to restart it around LVK meeting(September)
    • Yarm
      • Y-21 vacuum trouble
        • Now, by turning on the TMP, keep good vacuum level
  • New high power laser replacement
    • Temperature drift would be smaller by tuning the temperature control
    • But if we increased the output laser power from PSL room, IMC cannot be locked.
    • Now operating the current old laser
  • Alignment inside the PSL room
    • PMC alignment done(No so serious change)
    • GR alignment done (Increased the beam power)
  • Interferometer operation
    • After checking the POP and REFL table again, and found one BS flipped.
      • Then, PRFPMI RF became more stable (One night lock)
  • PEM tasks
    • Outside magnetometer
      • DAQ system trouble? Washimi-san sent to company
    • Acoustic noise at OMC
      • Re-cabling for OMC speaker
    • AC power check at Yend
      • SUM value of the MNV oplev decreased
      • No problem in AC power supplying

Jurnal paper issue

Details are here!

  • Micro seismic analysis (Hoshino)
  • ICRC Proceedings
  • Acoustic reverberation time paper (Washimi+, Sato?)
    • Suspend
    • Re-measurement before O4?
  • TCam paper
    • Writing ongoing

Preparation for O4b

  • Check the seismic motion around mozumi area
    • Daytime ground motion
    • It may appeared in DARM sensitivity (SR3?)
  • Schumann resonance measurement
    • Ongoing
  • Investigation of the PEM injection
    • Magnetic injection
      • After O4a?
  • Voltmeter preparation
    • AC power monitor installation
    • DC power monitor installation
  • After O4
    • RF monitor with mokugo
    • Tiltmeter
    • RI detector
    • Newtonian noise
  • Discussion with DET members
    • Daily summary page PEM

Progress report

  • Yuzurihara
    • Pastavi

    • Data Quality Report slide

    • Data quality evaluation
  • Hoshino
    • Seismic motion analysis
  • Sato
    • Sound source analysid
  • Miyamoto
    • Weather analysis
  • Takatani
    • Applying the deepclean
    • Calculation of Schumann resonance
  • Kume

    • PR3 line injection klog25670

    • Noise subtraction
  • Nishizawa
    • Water newtonian noise
    • Magnetic field analysis
  • Washimi
  • Yokozawa

Place for memo

KAGRA/Subgroups/PEM/Meeting/230818/Agenda (last edited 2023-08-18 10:06:49 by TakaakiYokozawa)