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   * Monitor, eigen-frequency, transfer function check    * Monitor, eigen-frequency, transfer function check [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14196|poster]]

KAGRA Commissioning status at DET meeting

  • Date : 2022/08/08

Overall schedule

  • Overall schedule
    • 7/11 - 8/12 Suspension commissioning Type-B
    • 8/5 Acceptance check PRM, PR2, PR3 suspensions
    • 8/19 Acceptance check BS~SRM
    • X/XX Acceptance check interferometer PR3-SR3
    • 8/22 - 8/26 Closing the center area PRM~PR2
    • 8/29 - 9/2 Closing the center area BS~SRM
    • 9/5 - 9/9 Leak test
    • Y/YY Acceptance check IMC~PRM

Progress of commissioning

  • X arm commissioning
    • End X IM 81K

      • Monitor, eigen-frequency, transfer function check poster

    • Investigation of the noise in the new oplev light source
    • Investigation of the ADC noise
  • Y arm commissioning
    • Pumping down ongoing
    • Installed the ion pums to IXC and IYC
    • 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
    • Calibration confirmation
    • Transfer function measurement Type-A suspension
    • Noise budget
  • MICH 3f lock
    • Actuation efficiency measurement
  • Discussion of closing center area
    • Oplev pylon
    • Beam duct re-installation
    • New gate valve
    • Closing chambers around BS area

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/220808 (last edited 2022-08-08 13:37:32 by HirotakaYuzurihara)