• KAGRA
• Subgroups
• DET
• Meeting

Meetings

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

20250205 (Wed.)

• Agenda
  • Announcement
    • O4b schedule:

      • O4b: O4b will now end 9 June 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: 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: 2025/02/12
  • 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
  • line monitoring (Samurai)

    • line monitor update: changed the threshold to start the analysis klog

20250129 (Wed.)

• Agenda
  • Announcement
    • O4b schedule:

      • O4b: O4b will now end 9 June 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: 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: 2025/02/05
  • 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