Differences between revisions 1 and 2
Revision 1 as of 2022-08-29 07:31:17
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Revision 2 as of 2022-08-29 07:42:49
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Deletions are marked like this. Additions are marked like this.
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 * Date : 2022/08/22  * Date : 2022/08/29
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  * 7/11 - 8/19 Suspension commissioning Type-B
  * 8/22 - 8/26 Closing the center area PRM~PR2
  * 8/29 - 9/5 Closing the center area BS~SRM
  * 9/6 - pumping down
  * 8/5 Acceptance chec
k PRM, PR2, PR3 suspensions
  * 8/19 Acceptance check BS, SR2, SR3, SRM
  * (Done) 7/11 - 8/26 Suspension commissioning Type-B
  * (Done) 8/22 - 8/26 Closing the center area PRM~PR2
  * 8/29 - 9/2 Closing the center area BS~SRM
  * 9/5 - 9/6 Closing the chamber with interferometer alignment
  * 9/7
- pumping down started if all work are done
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  * 8/26 Acceptance check interferometer   * 8/26 Acceptance check ~SRM
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  * X/XX Closing IMM-PRM and SRM-OMC
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  * Installed the ion pums to IXC and IYC
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  * Calibration confirmation
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  * Noise budget
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  * After recovery of the alignment to AS table, FPMI trial will start
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 * OMC alignment


 * Discussion of closing center area
  * Oplev pylon
  * Beam duct re-installation
  * New gate valve
  * Closing chambers around BS area

KAGRA Commissioning status at DET meeting

  • Date : 2022/08/29

Overall schedule

  • Overall schedule
    • (Done) 7/11 - 8/26 Suspension commissioning Type-B
    • (Done) 8/22 - 8/26 Closing the center area PRM~PR2
    • 8/29 - 9/2 Closing the center area BS~SRM
    • 9/5 - 9/6 Closing the chamber with interferometer alignment
    • 9/7 - pumping down started if all work are done
    • 8/22 Acceptance check mid-size baffules
    • 8/26 Acceptance check ~SRM
    • Y/YY Acceptance check IMC~PRM
    • X/XX Closing IMM-PRM and SRM-OMC

Progress of commissioning

  • X arm commissioning
    • End X IM 81K
    • Investigation of the noise in the new oplev light source
    • Investigation of the ADC noise
  • Y arm commissioning
    • Pumping down ongoing
    • IY duct shield cooling (8/5- Started)
  • Beam dump around IFI
    • Many ghost beam
    • beam dumper from reflection beam of the PRM
    • Temperature monitor
  • ALS CARM/DARM
    • ALS CARM/DARM lock succeeded
    • Transfer function measurement Type-A suspension
    • Now the noise level is limited by the ALS after fiber noise cancellation
  • Find IR resonance improved
    • After recovery of the alignment to AS table, FPMI trial will start
  • MICH 3f lock
    • Actuation efficiency measurement
  • TCam analysis

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
    • MICH 3f lock
      • Check the lock information
    • ALS CARM/DARM
      • Check the lock information
    • 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/220829 (last edited 2022-08-29 07:42:49 by TakaakiYokozawa)