• KAGRA
• Subgroups
• DET
• Meeting
• 220711

KAGRA Commissioning status at DET meeting

• Date : 2022/07/11

Overall schedule

• (In case of no trouble)
  • 7/11 - 7/22 Suspension commissioning Type-B and PR2
  • 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 (Final:SRM)

  • ISS installation (Review 7/19)
  • High power laser installation

Progress of commissioning

• X arm commissioning
  • End X IM 83K
  • Investigation of the noise in the new oplev light source
  • Investigation of the TMSX beam shape
• Y arm commissioning
  • End Y : Pumping down ongoing, there are still some leak, but we will continue the pumping down
• Center area commissioning
  • Suspension health check Type-Bp's
    • Oplev upgrade : Done
    • PRM and PR3 mostly done, PR2 there are some homework
  • Mid-size baffle : Partially done, need to move to final position
  • Investigation of the X-arm fiber noise cancellation

    • Xarm : became stable -> Same treatment to Yarm

  • Study for installation of the new laser
    • Set inside the PSL room this week
  • OMC investigation
    • SRM replacement : Done
    • Power budget : Done
    • Beam profile measurement : This weeek

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
  • ALS
  • 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