Meetings

Meeting time: 13:00-13:30 JST/KST on every Monday
Meeting room: Zoom

Contents

Meetings
1. Agenda & Minutes

Agenda & Minutes

20220620 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Proposal of KAGRA DetChar f2f meeting. Kashiwa? Kamioka?
  - next KAGRA face-to-face meeting will be held on August 1~3 (hybrid style) web.
- KAGRA commissioning reports (Yokozawa)
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes

20220620 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Joint LVK DetChar report to the OPsDiv Meeting on 2022/06/16 slide minutes
  - LIGO, VIRGO AND KAGRA OBSERVING RUN PLANS web (15 June 2022 update)
  - next KAGRA face-to-face meeting will be held on August 1~3 (in-person style@U-Tokyo, Hongo campas + online style). The registration will start soon.
- KAGRA commissioning reports (Yokozawa) Commissioning220620
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes
- face-to-face meeting for KAGRA detchar@Kamioka
  - (Yuzurihara) if you have a comment/opinion, please let me know.
- DQR update (Yuzurihara)
  - klog#21190
  - sometimes DQR jobs failed, because the MDC trigger time is earlier than the time the latest frame file was generated.
  - One of solutions is to run DQR at upper stream on DGS network called DMT network.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - no report
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update

20220613 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - New paper about DQ for pyCBC arXiv
- KAGRA commissioning reports (Yokozawa)
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes
- KAGRA commissioning reports
  - Explained by Yokozawa-san. see KAGRA detector status220613
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
  - Task to compute inspiral range is running on k1det1 klog#20986
- Update contents of summary page? (Oshino)
  - Updated DetChar and VIS tab klog#21060

20220606 (Mon.)

Canceled due to conflict with KIW9

20220530 (Mon.)

Agenda
- Announcement
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - JPS meeting : registration by June 2 web
    - Question : Someone should present the status of DetChar and activity toward O4?
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Final KAGRA report at OpsDiv call was done at May. 26, 2022 slide for May 26
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes
- KAGRA commissioning reports
  - Pumping down of EY started at 2022 May 24 9:45~ klog#20851
  - Pumping down of IY started at 2022 May 25 9:35~ klog#20874
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - hveto worked with omicron triggers generated by a new version of Omicron
    - There seems to be no compatibility between omicron version we use and one in igwn-py39.
    - There may be also no compatibility between SummaryPages we use and omicron in igwn-py39.
    - If so, we need to move igwn-py39 for all tools (SummaryPages, omicron, hveto etc.)
    - SummaryPages in igwn-py39 had worked well in gps mode (reported a few weeks ago).
    - TY want to gather the volunteer to test SummaryPages in daily mode.
  - gwpy can use 'NDSSERVER' environmental variable
    - We don't need to do the code hack for nds2.py in gwpy.
  - (Yuzu) In DAC call, I heard that operation test of gw_data_find is on-going on m31 by Compu&Soft members. It may be available in a few week.
- DQR update (Yuzurihara)
  - I prepared the code of one task to compute inspiral range at the time of GW alert.
  - I send the merge request git repo and will take the review.
- Update contents of summary page? (Oshino)
  - Update SummaryPages web server by YamaT klog#20926

20220523 (Mon.)

Agenda
- Announcement
  - New accounts for accessing LIGO resources (registration by May 22)
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - Final KAGRA report at OpsDiv call is planned at May. 26, 2022 slide for Mar 31 slide for Feb 17
  - JPS meeting : registration by June 2 web
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes
- KAGRA commissioning reports
  - In-air health check for suspensions (ITMY, ETMY) was by Ushiba and other members.
  - On last Friday, we had the acceptance check to close the chamber for Yarm. It passed.
  - ADC glitch problem on many suspensions by YamaT klog#20815
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - hveto itself worked without no additional code hack.
  - Compatible error in trigger file format was occurred
    - The 'peak' columns have incompatible types: ['object', 'float64', 'float64']
    - In TY's remember, Kozakai-san faced and solved same problem...(?)
  - TY want to re-arrange cluttered O3-segments including test ones.
  - (Yuzu) This error is related to klog#19846 ?
- DQR update (Yuzurihara)
  - no update
- Update contents of summary page? (Oshino)
  - Updated VIS page. see klog#20814
- Analysis of transient signals of IMMT1 (Aogaku members)
  - klog#20793

20220516 (Mon.)

Agenda
- Announcement
  - Vigo DetChar paper arXiv
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - GWADW2022 web (registration closed)
  - The GRAvitational - wave Science&technology Symposia (GRASS 2022) web (registration closed)
  - (Final) KAGRA report at OpsDiv call is planned at May. 26, 2022 slide for Mar 31 slide for Feb 17
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Glitch subtraction survey for O4
  - see mail from Davis Derek (2022 May 3)
  - deadline : May 16
  - The glitch subtraction activities are managed under DET.
  - current summary
Minuts
- Announcement
  - If you talk about DetChar activity, please let chairs know
- KAGRA commissioning reports
  - In-air health check for suspensions (ITMY, ETMY) is on-going by Ushiba klog#20724 klog#20729
  - Turned "ON" two radiation shield coolers for EXC. But, on Sunday, it turned off due to mistake klog#20712 klog#20736
- DQR update (Yuzurihara)
  - Operation test for DQR application is on-going on DetChar dedicated machine
  - From last Wednesday, the alert from MDC stopped (I'm not sure this is scheduled or not...)
    - That is because 1st period of MDC finished
  - The code review will start gradually
  - You can see the summary report of MDC alert on GraceDB
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - FScan cannot find IGWN.
    - YamaT plan to use it which is a part of lalpulsar packages.
  - Trigger files are required for hveto test.
    - YamaT plan to do the consistency check with O3 triggers and the configuration file.
    - Trigger files are on the DET file server and they must be mounted from the test server.
    - Oshino-san will share a past configuration file.
- Update contents of summary page? (Oshino)
  - summary page is working well
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update
- Report of new tool development? (Darkhan)
  - debugging code

20220509 (Mon.)

Agenda
- Announcement
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Glitch subtraction survey for O4
  - see mail from Davis Derek (2022 May 3)
  - deadline : May 16
  - The glitch subtraction activities are managed under DET. I would like to ask regular report in DET meeting.
Minuts
- Announcement
- KAGRA commissioning reports
  - ADC noise measurement klog#20658
  - In-air health check for Yarm suspensions (ITMY and ETMY) is on-going.
    - If no problem, review will be done next week and pumping down will start on week of May 23
- DQR update (Yuzurihara)
  - no update
- Report of new tool development? (Darkhan)
  - add channel list?

20220502 (Mon.)

Agenda
- Announcement
- KAGRA commissioning reports
  - PRM cause the glitch in IMMT1 OPLEV signal and POP forword QPD signal klog#20539
  - In-air health check for suspensions (ITMY, ETMY) is on-going by Ushiba klog#20631 klog#20632
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Data Quality flag for O4a
  - We are asking the concrete requirement for DAC members (CBC, burst, Stochastic)
  - This is related to discuss the ER period and time
- Analysis of TCam photos of ITMY and ETMY with the metal scale by Tcam
Minutes
- Announcement
  - GWADW2022 web
  - The 9th KAGRA International Workshop (KIW) web
  - The GRAvitational - wave Science&technology Symposia (GRASS 2022) web
- DQR update (Yuzurihara)
  - no update.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - no update
- Update contents of summary page? (Oshino)
  - klog#20634
- Analysis of TCam photos of ITMY and ETMY with the metal scale by Tcam klog#20574
  - analysis is on-going by Aogaku students. Report will appear soon.

20220425 (Mon.)

canceld

20220418 (Mon.)

Agenda
- Announcement
  - monthly maintenance for JGWDoc + JGW wiki + klog on April 18 13:00-16:00 JST.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - No updates in last week.
  - Some volunteers for testing of hveto, fscan are sitll wanted.
  - We should start to test also iDQ from now on for future observing runs (O5, O6...)
- DQR update (Yuzurihara)
  - operation test for tools is on-going without error and trouble
- Update contents of summary page? (Oshino)
  - no update
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update
- Report of new tool development? (Darkhan)
  - slide
- 120Hz glitches investigation during O3GK
  - configuration file

20220411 (Mon.)

Agenda
- Announcement
  - Workshop 2022/04/15 web page
    - DetChar talk is planed by Yokozawa. When he circulates slide, put comments on slide.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- Exchange of opinions between DET members(YamaT, Sawada(OPS), Yuzurihara) and DMG members(Kanda, Oohara)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
  - (Oshino) explain idea, goal, and timeline
- Report of new tool development? (Darkhan)
- Follow-up report of remote contribution from Aoyama Gakuin univ.
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - no volunteer yet (Test of hveto and FScan).
    - Coding kagradata.py for the new version of Bruco is ongoing.
    - We need to decide KAGRA common rule about NDS2 and DATAFIND for fixing codes.
  - NAPT test was started for the purpose of saving number of IP address in DGS network.
    - DET gateway (copy of k1gate is enough for the test) will be connected to DGS network.
      - Other nodes will be under DET gateway.
    - It may be better to construct the gateway as Deb10. (Copy of k1gate is Rocky8)
      - TY have no experience of constructing NAPT on Debian.
    - NDS(k1nds[012]), NFS(k1nfs0) services must be available from under DET gateway.
    - How should we do k1det2 which is used for Bruco running from CDS workstation.
- Exchange of opinions between DET members(YamaT, Sawada(OPS), Yuzurihara) and DMG members(Kanda, Oohara)
  - related to conda environment and DQR tasks
  - in Kashiwa server and Kamioka computers, we should have common rule fo NDS2 and DATAFIND, which YamaT already mentioned.
- DQR update (Yuzurihara)
  - the application to connect between igwn-alert and Task Manager was developped by Joe
  - DQRAlert git repo
  - I tried to run this tool in Kamioka computer and it is working well.
  - need to prepare the document of how to use this tool on wiki page.
  - DQR workflow
- Update contents of summary page?
  - no update
- Combine DET computer resources into one DET cluster at Kamioka site
  - goal : prepare job management server and can submit job to k1det[012]
  - timeline : before O4
  - there might be conflict between this cluster and NAPT test. Oshino and YamaT will discuss.
- Follow-up report of remote contribution from Aoyama Gakuin univ.
  - (Yokozawa, Oshino, Yuzurihara) we started the discussion of task list and how to contribute from remote site.

20220404 (Mon.)

Agenda
- Announcement
  - DQR design document, put comments on git issue
  - Workshop 2022/04/15
    - Workshop on the development of innovative tools for new collaborations within gravitational wave detection experiments
  - KAGRA's authorship submission. For details, see [kagra 05009]. Deadline April 8 17:00 JST
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- DQR update
- Update of summary page
- Trouble of Omicron trigger generation
- 120Hz glitches investigation during O3GK
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - Installation of IGWN was done on k1detfs.
    - Too slow HDD response? (~150KB/s via NFS)
  - Works well
    - SummaryPages as GPS-select mode
      - ini-file grammar is slightly changed from the old version.
    - Omicron
      - No special hack
    - Omega-scan
      - needs temporal code hack
    - Bruco
      - needs preparation for reading kagra data (kagradata.py)
      - No --include option in original one.
  - Not yet
    - SummaryPages as Daily mode (This will be done by Kamioka people)
    - hveto
    - FScan
      - Not included in IGWN environment?
  - Problem
    - No global NDS2, DataFind servers or equivalent way.
      - SSH port forwarding is not enough because port number is different depending on person.
      - So I cannot do the code hack on IGWN software in the system region.
    - KAGRA env may not be able to be included in IGWN until O4.
      - If so, we shouldn't use IGWN in officially for O4.
  - (Lupin) igwn-py38? or py39?
  - YamaT asked status of FScan
  - In future, we need to prepare similar environment on Kashiwa cluster. The environment is not completely same as Kamioka computers.
  - We need volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
  - Operation test for new version of Task Manager is on-going on k1det1.
  - I found that code of stationary task uses datafind to read gwf data, which we don't have.
  - I need to consider how to read data for DQR tasks.
    - (Darkhan) Is there any way to get the latest list of channels?
    - (Yuzurihara) If you can specify the name of frame data, there is a function on gwpy.
- Update of summary page (Oshino)
  - no update
- Trouble of Omicron trigger generation (Oshino)
  - klog#20328
  - replaced the local SSD on k1sum1. The Omicron triggers are stored in different disk.
- 120Hz glitches investigation during O3GK
  - no update
  - Kihyun can't join for a while. This project will be postponed.
- Report of new tool development (Darkhan)
  - showed demonstration
  - this tool can take a ratio between channels and will be able to apply time-domain filter (band pass/highpass/lowpass) in future.

20220328 (Mon.)

Agenda
- Announcement
  - DQR design document, put comments on git issue
  - Workshop 2022/04/15 Workshop on the development of innovative tools for new collaborations within gravitational wave detection experiments
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- Activity report by students from Aoyama Gakuin univ.
  - glitch investigation related to IMMT1 oplev (Aoyama Gakuin univ.)
  - Tcam image analysis to identify mirror location and center (Aoyama Gakuin univ.)
- DQR update
- Update of summary page
- 120Hz glitches investigation during O3GK

Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - YamaT constructed the test environment in local computer
  - Although YamaT is copying the environment to DetChar computers, it is very slow. (speed ~ 250KB/s)
  - After copying, YamaT will work on modification of codes to fit KAGRA data, such as nds2.py
  - For testing the tools (Omicron, Hveto...), we need volunteers, especially remote site!
- Activity report by students from Aoyama Gakuin univ.
  - five students and two staff members from Aoyama Gakuin univ. stayed Kamioka site during last three weeks.
  - They helped commissioning work both in tunnel klog#20124 klog#20155 and in control room.
  - several code developments to understand glitch cause have been done. klog#20026 klog#20027
  - code development to identify mirror center of ITMX have been done by using image analysis. slide(Japanese) klog#20036 klog20198 klog#20203
- DQR update
  - Joe updated Task Manager. Yuzurihara will install new version and test it.
- Update of summary page
  - no update
- 120Hz glitches investigation during O3GK
  - no update

20220307 (Mon.)

Agenda
- announcement
  - LVK meeting March 2022 wiki web
    - registration is available
- 120Hz glitches investigation during O3GK
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- DQ flags for O4
- DQR update
- glitch investigation related to IMMT1 oplev

Minutes
- 120Hz glitches investigation during O3GK
  - no update
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - YamaT is working on this project at test-server.
  - Test of new conda environment will start from next week (after JPS meeting)
- DQ flags for O4
  - no update
- DQR update
  - Joe is developing the code to connect between igwn-alert and TaskManager. It will be available soon.
  - Schedule for review
    - Review of Task Manager will be done before review of each task.
    - High priority task needs to complete before Aug. 2022
    - Low priority task needs to complete before Nov. 2022
- glitch investigation related to IMMT1 oplev
  - From March 8, students from Aoyama Gakuin univ. stayed at Kamioka
  - They worked on the investigation of glitch. klog#20026 klog#20027
  - They checked IMMT1 QPD signals and PRM suspension signals at the time of glitch.
- NDS2 tool development (Darkhan)
  - no major update.
- GPS accuracy monitor (Oshino)
  - is available on summary page
  - Current difference is acceptable and reasonable.
- No meeting on March 21 due to Japanese holiday. Next meeting is planed on March 28.

20220307 (Mon.)

Agenda
- announcement
  - RRT plan during O4 slide
  - LVK meeting March 2022 wiki web
    - registration is available
- 120Hz glitches investigation during O3GK
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQ flags for O4
- DQR update
Minutes (Yuzurihara)
- 120Hz glitches investigation during O3GK
  - no update
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - There are many computers/workstations in Kamioka site or Kamioka control room.
  - Workstations (k1ctr*) use common conda environment by mounting the file server.
  - In DetChar computers k1{sum,det}[01], conda environment should be unified all DetChar resources, similar to workstations.
  - To prevent the trouble that DetChar experts might break the environment, the conda environments will be set as read-only permission.
  - Installation will be done by Kamioka members. After that, we need volunteers to test the DetChar tools on new conda environment.
  - what is the time line?
    - Installation will finished before the end of March. From April, the test will start. Volunteers are helpful.
- DQ flags for O4
  - In last PEM meeting, Yuzurihara presented the current status and received the helpful comments. [slide](https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=13970)
  - We will change our plan to construct the data quality flag and will compute the BLRMS of gwpy to set the threshold.
  - The review is necessary before O4. (probably very close to O4, because we need ER)
- DQR update
  - no update
- Commissioning of GreenX
  - In the last weekend, the commissioner tried continuous GreenX. During that trials, they found many short term lock loss (~10 ms). 10 ms is too short to follow the suspension motion, so it is likely that there are some causes of the lock loss except for the suspension motion.
  - The commissioner needs helps DetChar members to identify the cause or give a hint of the cause.
  - For details, see klog#19963 klog#19983
  - main channel K1:TMS-X_GR_PDA1_OUT_DQ
  - time : 2022 Mar 06 23:37:50 UTC = 2022 Mar 07 8:37:50 JST = GPS time 1330645088

20220228 (Mon.)

Agenda
- 120Hz glitches
- DQ flags for O4
- progress of DQR
- lock loss study of GreenX
Minutes (Yuzurihara)
- accouncement
  - LVK meeting March 2022 wiki web
    - registration is available
    - Wed, 17 March 2021:
      - Plenary Session #1 (09:00-10:30 US/CDT) (=3/16 23:00 JST)
      - Paper Presentation Session #1
      - Plenary Session #2 (16:00-17:30 US/CDT) (=3/17 6:00 JST)
    - Thu, 18 March 2021:
      - Plenary Session #3 (09:00-10:30 US/CDT) (=3/17 23:00 JST)
      - Paper Presentation Session #2
      - Plenary Session #4 (16:00-17:30 US/CDT) (=3/18 6:00 JST)
  - Pastavi server will be unavailable tonight
    - klog#19913
- 120Hz glitches
  - no update
- DQ flags for O4
  - no update
- progress of DQR
  - igwn-alert is running more than 9days and receiving the MDC alert
  - next step is to connect the MDC alert with the launch TaskManager.
  - remained task is to develop InspiralRange issue
- lock loss study of GreenX
  - klog#19906
  - From the Hveto result, the channel (K1:IMC-SERVO_MIXER_DAQ_OUT_DQ) was the most coincident channel with the lock loss of GreenX.
- unify the detchar computing environment (YamaT)
  - scattered codes and applications (Omicron, summary page, ) over Kamioka computers are troubling.
  - we plan to unify the environment by using igwn conda
  - detail will be reported in next meeting
  - (Darkhan) conda environment on k1ctr*. someone accidentally update someone's conda environment. administrator should prepare the conda environment?
  - (YamaT) k1ctr* share the environment. this activity is not related to k1ctr* but k1sum[01], k1det[012]. we should separate the user environment and the environment for the DET tools
  - (Darkhan) should avoid accidental mistake.

20220221 (Mon.)

Agenda
- 120Hz glitches
- DQ flags for O4
- progress of DQR
Minutes
- 120Hz glitches
  - No updates
- DQ flags for O4
  - No updates
- progress of DQR
  - klog#19847
- Proposal new tool to see past data by NDS (Darkhan)

20220207 (Mon.)

Agenda
- 120Hz glitches
- Report from LIGO Detchar F2F Meeting
- DQ flags for O4
- progress of DQR
Minutes
- 120Hz glitches
  - No updates
- DQ flags for O4
  - slide
  - (Yuzurihara) read BLRMS data and made the several plots with 1% and 99% percentile.
  - When KAGRA will be locked as observation mode?
    - hopefully after july, there will be lock trial for two monthes(?)
  - When you set the 1% criteria, always you throw away the 1% data?
    - We might need to consider the better procedure to care that point.
- progress of DQR
  - klog#19671

20220131 (Mon.)

Agenda
- 120Hz glitches
- Report from DQR hackathon
- DQ flags for O4
- Master thesis (Morisue-san)

20220117 (Mon.)

Agenda
- 120Hz glitches
- ITMX glitches
- DQR progress
- DQ flags for O4
Minutes
- 120Hz glitches
  - No updates
  - Next step is coincidence search with signals around ETMY including local control sensors.
- ITMX glitches
  - klog#19212
  - K1:VIS-ITMX_F3_LVDTINF_GAS_{IN1,OUT} have glitches.
  - It seems to occur around AA chassis. (AA and cable replacement didn't help to improve situation).
  - We will try to find glitches on other channels on the same ADC board.
  - This channel should be added to Omicron search on SummaryPages.
- DQR progress
  - JGW-G2213721
- DQ flags for O4
  - No updates
- O3GK paper
  - Threshold used for computing a glitch rate was changed as SNR=6.5.
  - It's a same criterion with LIGO, and Virgo.
  - Both GEO and KAGRA's results are now computed and draft was also updated.

Past meeting

KAGRA/Subgroups/DET/Meeting (last edited 2022-06-21 14:32:20 by HirotakaYuzurihara)