• KAGRA
• Subgroups
• DET
• Meeting

Meetings

• Meeting time: 11:00-11:30 JST/KST on every Wednesday
• Meeting room: Zoom3

20250305 (Wed.)

• Agenda
  • Announcement
    • O4 schedule:

      • O4c: We are currently in O4c, and will end on 7 October 2025.

      • Run plan(02/15 updated) operation (02/27)

        • Maintenance/commissioning break from 1 April 2025 at 15:00 UTC to 4 June 2025 at 15:00 UTC
        • O4 will end on 7 October 2025 at 15:00 UTC
    • Scheduled conference
      • LVK meeting: 2025/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/31(extended).
      • Open Data Workshop 2025/05/12-14
      • GWADW 2025: 2025/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2025/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 02/13

      • Milestone

        • 2/19 PRFPMI DC lock with 10W input power was succeeded manually klog

        • 2/20 Implementation of the automatic 10 W PRFPMI DC opration by modifiing OMC LSC lock acquisition with the OMC LOCK guardian klog

    • Condor setting at Kashiwa cluster (called system-B) will be updated not to occupy by single user and to reserve CPUs for high priority jobs

    • Initial effort submission for KAGRA authorship 2025 started. The submission deadline is Friday February 21 (2025) 17:00 (JST). wiki

    • Next meeting: 2025/03/05
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • Lock duration statistics in January and February 2025 klog

    • lockloss investigation: 2025/02/19-23 (only 10W operation) klog

20250226 (Wed.)

• Agenda
  • Announcement
    • O4 schedule:

      • O4c: We are currently in O4c, and will end on 7 October 2025.

      • Run plan(02/15 updated) operation (02/20)

        • Maintenance/commissioning break from 1 April 2025 at 15:00 UTC to 4 June 2025 at 15:00 UTC
        • O4 will end on 7 October 2025 at 15:00 UTC
    • Scheduled conference
      • LVK meeting: 2025/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/31(extended).
      • Open Data Workshop 2025/05/12-14
      • GWADW 2025: 2025/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2025/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 02/13

      • Milestone

        • 2/19 PRFPMI DC lock with 10W input power was succeeded manually klog

        • 2/20 Implementation of the automatic 10 W PRFPMI DC opration by modifiing OMC LSC lock acquisition with the OMC LOCK guardian klog

    • Condor setting at Kashiwa cluster (called system-B) will be updated not to occupy by single user and to reserve CPUs for high priority jobs

    • Initial effort submission for KAGRA authorship 2025 started. The submission deadline is Friday February 21 (2025) 17:00 (JST). wiki

    • Next meeting: 2025/03/05
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • Sensitivity improvement by turning off the OMC ASC beacon klog

    • Gauch update: overview page of the Gauch klog

    • lockloss investigation: 2025/02/17-19 klog

    • lockloss investigation: 2025/02/10-12 slide

  • Segment

    • Now several segments are available on DQSEGDB at Feb 21. git repo

    • Fixed issue of unexpected suspend of regular segment. klog

  • veto definer file wiki

    • The question about "what is the necessary minimum duration for search pipeline?" was posted to DAC WG chairs
      • X-pipeline: 64 s
      • PySTAMPAS: 520 s
      • stochastic search: 580 s
      • CW: 512 s
      • gstlal: O(100) s blocks
  • Summary page

    • Modified configuration file of SummaryPage klog

    • Added links to the O4c IGWN SummaryPage klog

20250219 (Wed.)

• Agenda
  • Announcement
    • O4 schedule:

      • O4c: We are currently in O4c, and will end on 7 October 2025.

      • Run plan(02/15 updated) operation (02/06)

        • Maintenance/commissioning break from 1 April 2025 at 15:00 UTC to 4 June 2025 at 15:00 UTC
        • O4 will end on 7 October 2025 at 15:00 UTC
    • Scheduled conference
      • openMMA telecon: 2025/02/20 (online, no pre-registration required) including update reports from lvk
      • LVK meeting: 2025/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/31(extended).
      • Open Data Workshop 2025/05/12-14
      • GWADW 2025: 2025/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2025/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 02/13

    • Condor setting at Kashiwa cluster (called system-B) will be updated not to occupy by single user and to reserve CPUs for high priority jobs

    • Initial effort submission for KAGRA authorship 2025 started. The submission deadline is Friday February 21 (2025) 17:00 (JST). wiki

      • confirm what activities you or your group plan to do this year in the KAGRA detchar
    • Next meeting: 2025/02/26
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • Addded ISC_WD_L label in lockloss guardian klog

    • Gauch update: Analysis will run when the LSC_LOCK guardian is more than OBSERVATION_WITHOUT_LINES klog

    • Reproduction of missing lockloss information klog32673

    • lockloss investigation: 2025/02/11 klog32686

    • lockloss investigation: 2025/02/10 klog32649

    • 60 - 100 Hz breathing sensitivity in current situation klog32647

    • Sensitivity breathing at 60-100 Hz: Glitch to MN or IM vertical actuators klog32628

  • Segment file

    • Reproduction of Segment files during 2025/02/8~10 klog32630

  • veto definer file wiki

    • The question about "what is the necessary minimum duration for search pipeline?" was posted to DAC WG chairs
      • X-pipeline: 64 s
      • PySTAMPAS: 520 s
      • stochastic search: 580 s
  • scattered light noise

    • Scattered light glitch at Yend klog32725

  • Hveto

    • Rerun Hveto process klog

20250212 (Wed.)

• canceled

20250205 (Wed.)

• Agenda
  • Announcement
    • O4 schedule:

      • O4c: O4c will now end 7 October 2025.

      • Run plan(1/25 updated) operation (1/30)

        • Maintenance/commissioning break from 1 April 2025 at 15:00 UTC to 4 June 2025 at 15:00 UTC
        • O4 will end on 7 October 2025 at 15:00 UTC
    • Scheduled conference
      • LVK meeting: 2025/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/16.
      • Open Data Workshop 2025/05/12-14
      • GWADW 2025: 2025/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2025/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 01/28

      • OMC DCPD B was broken. The protection system needs to be updated. Still, OMC DCPD A is alive. klog

    • The KAGRA's author list 2024 will be finalized today. The final vote by KSC members will be done tomorrow.
    • Preparation of task list for KAGRA authorship 2025 is underway.
    • The working chair of low-latency WG was taken over from S.Morisaki to Alvin.
    • Next meeting: 2025/02/12
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • lockloss investigation: 2024/1/31 klog

    • lockloss investigation: 2024/12/21~12/30 klog

    • k1nds2 was stopped due to the planned power outage klog. Detchar cluster was shutdown at the same time.

  • line monitoring (Samurai)

    • line monitor update: changed the threshold to start the analysis (1/29~) klog

  • detchar cluster

    • Update HTCondor on DET cluster klog

  • pycbc triggers using the clustered segment files (Narikawa)

    • slide

20250129 (Wed.)

• Agenda
  • Announcement
    • O4 schedule:

      • O4c: O4c will now end 7 October 2025.

      • Run plan(1/25 updated) operation (1/23)

        • Maintenance/commissioning break from 1 April 2025 at 15:00 UTC to 4 June 2025 at 15:00 UTC
        • O4 will end on 7 October 2025 at 15:00 UTC
    • Scheduled conference
      • LVK meeting: 2025/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/16.
      • Open Data Workshop 2025/05/12-14
      • GWADW 2025: 2025/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2025/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2025/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 01/14

    • Evaluation of effort for KAGRA authorship 2024 is underway.
    • Several visitors at the KAGRA site during January
    • Next meeting: 2025/02/05
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • lockloss investigation: 2024/12/21~12/30 klog

    • lockloss investigation: 2025/01/19~22 klog

    • List of lockloss time from the states related to OBSERVATION klog

    • run summary processes were restarted as ones for O4c. klog

    • The KAGRA's plan to join O4 is still under discussion.
  • Summary page

    • Modified the configuration files of DET tools klog

  • Omegascan

    • Running Omegascan at DetChar cluster klog

    • Is it possible to update the HTcondor version at detchar cluster?
  • Scattered light noise

    • slide(1/10) slide(1/24)

  • Pastavi

    • adjusting the number of images, backup of NoiseBudget data, and trend data in plotting multiple channels klog

  • line monitoring (Samurai)

    • (yamat) It's better to change the definition of the locked data from K1:GRD-IFO_STATE_N >= 100 to K1:GRD-LSC_LOCK_STATE_N >= 9900.

  • veto definer file (Uchikata)

    • slide

    • The histogram was updated.

    • They compared the results by removing T<256s or T<512s. Some short segments are not related to the occurrence of the IPC glitch.

20250122 (Wed.)

• Agenda
  • Announcement
    • O4b schedule:

      • O4b: O4b will now end 9 June 2025.

      • Run plan(1/15 updated) operation (1/16)

    • Scheduled conference
      • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/16.
      • Open Data Workshop 2024/05/12-14
      • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 01/14

    • Evaluation of effort for KAGRA authorship 2024 is underway.
    • Several visitors at the KAGRA site during January
    • Next meeting: 2025/01/29
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning

    • lockloss investigation: 2024/12/31 klog

    • lockloss investigation: 2024/12/21~12/30 klog

    • Noise budget plot for the DARM sensitivity in November 2024 klog

    • New DARM sensitivity (2025/01/19) klog

    • Add a duration of staying in the last state to the lockloss list klog web

      • Lock duration was added to the lockloss summary page. It’s better to use a rough estimate.

      • Is it possible to show the truncated value as an integer? --> yes

  • Summary page

    • Modified the configuration files of DET tools klog

    • Changed the plotting range of range plots klog

    • The Summary page shows two kinds of inspiral range values, which are values computed by YamaT-san's script and gwsumm. There are some differences due to different configurations. In the future, it's better to clarify the cause of the difference between the two values
  • Segment file

    • Update script to generate Segment files for the past data klog klog

  • Scattered light noise

    • Scattered light noise reoprt: ASD of OPTLV channels and 2024.12.13 data klog

  • Noise subtraction of beam jitter noise around 120 Hz

    • slide

20250115 (Wed.)

• Agenda
  • Announcement
    • O4b schedule:

      • O4b: O4b will now end 9 June 2025.

      • Run plan(12/15 updated) operation (12/19)

    • Scheduled conference
      • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/16.
      • Open Data Workshop 2024/05/12-14
      • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 12/11

    • Evaluation of effort for KAGRA authorship 2024 is underway.
    • Several visitors at the KAGRA site during January

    • Power outage around the KAGRA site --> no impact for KAGRA

    • Mail server issue, from January 10th, 21:09 to January 11th, 22:56 JST
    • Next meeting: 2025/01/22
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning support
  • Line Monitor

    • Automation of the daily monitor for identifying and fitting the line noise klog

  • Segment file

    • The segment name of the IPC glitch was changed from K1-DAQ-IPC_ERROR to K1-DAQ_IPC_ERROR. klog

    • Due to IPC glitch, the locked segment will be devided into short segments. They evaluated the fraction of the short segments. The actual threshold is necessary to be determined in future. slide

    • The current favor is 256 s. When we applied this threshold, we will exclude 1% data from the science mode. We need to collect the requirements of each pipeline.
  • Noise subtraction pipelines (Chia-Jui Chou)
    • deepclean (Chia-Jui Chou)
      • run at kamioka
    • seqARIMA (David Hui, Sangin Kim)
      • run at kashiwa
    • ICA (Kume, Itoh, Yokoyama)
    • The common goal is to subtract the noise.
    • it's important to test the long term stability.

20250108 (Wed.)

• Agenda
  • Announcement
    • O4b schedule:

      • O4b: O4b will now end 9 June 2025.

      • Run plan(12/15 updated) operation (12/19)

    • Scheduled conference
      • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • Early bird registration will close at 2025/01/16.
      • Open Data Workshop 2024/05/12-14
      • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront

      • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) web

    • KAGRA site report 12/11

      • For the summary during holidays, see Miyoki-san's mail.
    • Evaluation of effort for KAGRA authorship 2024 is underway.
    • Several visiters at KAGRA site during January
    • Next meeting: 2025/01/15
  • Progress reports

    • Upgrade DetChar computers (YamaT)

    • DQR update (Yuzurihara)

    • lock loss study in the commissioning (YamaT, Yuzurihara) web

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
• Minutes
  • Commissioning support

    • Summarize the lockloss count labeled by the SYS_LOCKLOSS guardian klog table

    • Categorization by the behavior of POP90 before the lockloss klog

  • Segment file

    • The segment of K1-GRD_PEM_EARTHQUAKE is already available on DQSEGDB. For other new segments will be available at DQSEGDB. (git issue)

    • Name convention issue came up. Plan: K1-DAQ-IPC_ERROR --> K1-DAQ_IPC_ERROR. Before releasing this segment, we have a chance to change the name.

    • We need to update other scripts if we change the segment name. Developers or maintainers, please check your code.

  • It's better to keep the code in the GitHub repository up-to-date. Remember to push the code after you modified it or confirmed it's stable.

  • The line monitor is working well during the holidays. web

Past meeting

• 2024

• 2023

• 2022

• 2021

• 2020

• 2019