Meetings

• Meeting time: 14:00-15:00 JST/KST on every Thursday

• Meeting room: Zoom3 (https://zoom.us/j/5045179604)

Agenda & Minutes

20210225 (Thu.)

• Agenda
  • Progress of O3GK paper
  • O4 preparation
• Minutes
  • Progress of O3GK paper
    • Chihiro re-analysis with proper science segment for omicron triggers.
    • A part of Kihyun's analysis is done.
    • Cross-check can be done. But not start yet.

  • DetChar cluster in Kamioka

    • http://klog.icrr.u-tokyo.ac.jp/osl/?r=16082

    • OS installation for master node was done.
  • Omega-scan test
    • Installation for Kashiwa cluster was done.
    • Error is occurred on gwdatafind.

  • SummaryPages

  • LVAlert

20210218 (Thu.)

• Agenda
  • Progress of O3GK paper
  • O3 data replay
  • O4 preparation
• Minutes
  • Progress of O3GK paper
    • hveto conf is same
    • segment is used as latest same science segments
    • definition of cutting end of segments is difference.
    • Channel list is used as on github's one.

    • Next step -> unifying cutting definition.

      • Kihyun will re-run omicron with new segment cutting definition
    • We need to merge veto segment from a lot of short ones to continuous one.
  • O3 data replay
    • Main purpose of O3 data replay is performing end-2-end test of low-latency pipelines (CAL, DET, DAS, etc).
    • LV will use real O3 data.
    • KAGRA provides simulated data (~80Mpc for BNS) because of too poor sensitivity of O3GK data.
    • We may need to inject GWs on software with consistency with LV's real events.
    • Frame work of software injection is already available.

  • SummaryPage

    • Updating VIS page.
    • It will be closed to LIGO's one.
  • LVAlert
    • k1det1 can be used for test.
    • Need personal account because we use personal DCC account for accessing GraceDB.
      • Ask LV people how to get common account on next LVK DET meeting.

20210204 (Thu.)

• Agenda
  • Progress of O3GK paper
  • O3 data replay
  • O4 requirement
• Minutes
  • Progress of O3GK paper

    • Omicron trigger transfer: Kamioka -> KISTI, it is postponed.

      • Young-Min asked KISTI administrator.
    • GW-search triggers have not been served yet.
  • O3 data replay
    • K1:OPS-SIM_GAUSS1_IN1 (simulated error signal)
    • K1:OPS-SIM_GAUSS1_OUT (simulated h(t) )
      • gaussian noise as floor level
      • Some spectral lines (cal lines, violin mode, power lines)
      • Simulated glitches.
    • K1:OPS-SIM_GAUSS3_OUT (simulated auxiliary channel)
  • O4 requirement
    • DQ state vector (Yamamoto)
      • Providing on real-time model.
    • Data Quality Report (Yuzurihara)
      • First step is to use lvalert in order to receive GW alert from GraceDB.
    • Transient Event validation (Kozakai)
      • Basic idea is omicron+hveto (same as O3GK)
      • Takeover should be done from Kozakai-san.
    • Category veto (Yamamoto)
      • At least CAT1 should be provided.
      • We need to convert to veto-definer file format.
    • Spectral lines investigation (Yokozawa)
      • Listing of VIS-derived peak frequencies.

20210128 (Thu.)

• Agenda
  • Report from Burst search
  • Binary range evaluation with C20 offline h(t)
  • Progress of O3GK paper
• Minutes
  • Report from Burst search
  • Binary range evaluation with C20 offline h(t)

    • slide

    • Multi-taper and Welch show similar results
    • Bayesline result is slightly different from results by other two methods.
    • Estimated values are enough for O3GK (search) paper.
    • LVK review of this work is necessary for publishing results.
  • Progress of O3GK paper

20210121 (Thu.)

• Agenda
  • Announcement

    • LVK DetChar call will be held (Jan. 25 19:00 JST, KST)

  • Progress of O3GK paper
  • CAGMon results
  • O3 Data replay
• Minutes
  • Progress of O3GK paper
    • Some difference between Kihyun's and Chihiro's results.
    • hveto setting should be tuned on conf file and re-run again.
    • GW search results will be provided 1-2 months later (?).
  • CAGMon results

    • slide

  • O3 data replay
    • LV requested the simulated data instead of O3GK data as KAGRA's data.
    • Auxiliary channels which has realistic coherence, coincidence etc are not available.
    • All multi-channel analyses cannot work well in such situation.
    • We need more discussion how do we join O3 data replay.

20210107 (Thu.)

• Agenda
  • Progress of O3GK analysis
  • O4 preparation
• Minutes
  • Progress of O3GK analysis
    • Analysis itself was finished.
    • Results by Chihiro and Kihyun are now comparing.

      • => Some conf. is still difference.

    • At least after finishing paper work, omicron triggers should be shared on Kashiwa cluster for remote site people.
  • O4 preparation
    • Model update will be finished soon.

      • => After model update, suspension commissioning will be started.

    • SummaryPages seems to be stopped.

      • => Because of the channel name update by VIS model changes.

      • => Current situation of real-time model is slightly complicated. ITMY: Old model, others: new model etc.

      • => After finishing CRY measurements, all suspension models are unified.

Past meeting

• 2020

• 2019