Differences between revisions 1 and 2
Revision 1 as of 2022-06-27 08:21:45
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Revision 2 as of 2022-06-27 08:38:26
Size: 1946
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Deletions are marked like this. Additions are marked like this.
Line 3: Line 3:
 * Date : 2022/06/20  * Date : 2022/06/27
Line 8: Line 8:
  * 6/20 - 6/24 Leak of End Y
* 6/27 - Repair the leak point and start the pumping down
  * 6/27 - EY : Repair the leak point and start the pumping down
Line 13: Line 12:
  * 7/25 - 7/29 Acceptance check
  * 8/1 - Closing the center area
  * 7/25 - 7/29 Acceptance check ~PR2
  * 8/1 - 8/5 Closing the center area ~PR2
  * 8/8 - 8/19 (Including Obon) Acceptance check ~SRM
  * 8/22 - 8/26 Closing the center area ~SRM
  * 8/29 - 9/2 Leak test
Line 16: Line 18:
  * Mid size baffle installation   * Mid size baffle installation (SR3, SRM)
  * SRM replacement (Week of 7/4)
Line 18: Line 21:
  * High power laser installation

 * (LVK information)
  * O4a will start March 2023 [[https://observing.docs.ligo.org/plan/|web]]
  * High power laser installation (Week of 7/4)
Line 25: Line 25:
 * X arm commissioning
  * Investigation of the noise in the new oplev light source
Line 26: Line 29:
  * IY leak test done [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21135|klog#21135]]
  * IY oplev windshield installed [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21192|klog#21192]]
  * End Y : Start the leak (very slowly to avoid the dust.)
   * 1 week leaking, fixing early next week [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21191|klog#21191]]
  * End Y : Leak done
Line 32: Line 32:
  * MICH fringe detected ([[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21149|klog#21149]])
  * Mirror cleaning(first contact) and mid-size baffle installation
   * PR2 : Installed
   * SR2 : Installed [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=20205|cleaned]]
   * BS : Installed [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=20857|cleaned]]
   * PRM : Installed [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=20702|cleaned]]
   * PR3 : Installed [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21082|cleaned]]
   * SR3 : Not yet [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21212|cleaned]]
   * SRM : Not yet (When replacement?) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21208|cleaned]]
  * Others
   * ITMX glitch from ADC [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=21185|klog#21185]]
   * PR traverser limit switch install
   * Green related work
  * Suspension health check Type-Bp's
  * Mirror cleaning SR3 and SRM
  * Investigation of the X-arm fiber noise cancellation
   * We cannot keep control for the long time
   * We have to fix it before starting the ALS DARM commissioning
  * Study for installation of the new laser
   * Alignment check by using heavy mass
Line 50: Line 44:
  * Glitch investigation of the ITMX ADC
  * Glitch investigation of the MN oplev light source
Line 65: Line 61:
  * OMC
   * Invesigation will continue after closing the center area
   * Because the BS is too fluctuate, it became difficult to investigate

KAGRA Commissioning status at DET meeting

  • Date : 2022/06/27

Overall schedule

  • (In case of no trouble)
    • 6/27 - EY : Repair the leak point and start the pumping down
    • 6/20 - 7/1 Suspension commissioning Type-Bp
    • 7/4 - 7/8 Interferometer commissioning
    • 7/11 - 7/22 Suspension commissioning Type-B
    • 7/25 - 7/29 Acceptance check ~PR2
    • 8/1 - 8/5 Closing the center area ~PR2
    • 8/8 - 8/19 (Including Obon) Acceptance check ~SRM
    • 8/22 - 8/26 Closing the center area ~SRM
    • 8/29 - 9/2 Leak test
    • Mid size baffle installation (SR3, SRM)
    • SRM replacement (Week of 7/4)
    • ISS installation
    • High power laser installation (Week of 7/4)

Progress of commissioning

  • X arm commissioning
    • Investigation of the noise in the new oplev light source
  • Y arm commissioning
    • End Y : Leak done
  • Center area commissioning
    • Suspension health check Type-Bp's
    • Mirror cleaning SR3 and SRM
    • Investigation of the X-arm fiber noise cancellation
      • We cannot keep control for the long time
      • We have to fix it before starting the ALS DARM commissioning
    • Study for installation of the new laser
      • Alignment check by using heavy mass

Interesting data

  • X arm cavity
    • Both IR and GR
    • Glitch investigation of the ITMX ADC
    • Glitch investigation of the MN oplev light source
  • Y arm commissioning
    • Both IR and GR
  • Center area commissioning
    • Main IR
    • IMC (Input Mode Cleaner)
      • ASC (Alignment Sensing and Control) done
      • Long term stability check
        • Beam power, beam position, oplev monitoring
      • Glitch investigation
      • Temperature dependence
      • Relationship between PSL room
      • With PEM channels
      • (Hammering test?)
    • OMC
      • Invesigation will continue after closing the center area
      • Because the BS is too fluctuate, it became difficult to investigate

KAGRA/Subgroups/DET/Meeting/220627 (last edited 2022-06-27 08:56:12 by TakaakiYokozawa)