• KAGRA
• Subgroups
• DET
• Meeting
• 220725

KAGRA Commissioning status at DET meeting

• Date : 2022/07/11

Overall schedule

• Overall schedule
  • 7/11 - 8/12 Suspension commissioning Type-B
  • 8/1 - 8/5 Acceptance check PRM~PR2
  • 8/22 - 8/26 Closing the center area PRM~PR2
  • 8/13 - 8/19 Acceptance check BS~SRM
  • 8/29 - 9/2 Closing the center area BS~SRM
  • 9/5 - 9/9 Leak test
  • ?? Acceptance check IMC~PRM

Progress of commissioning

• Some delay from
  • Beam dump around IFI
  • SR3, SRM mid-size baffle final check
• X arm commissioning
  • End X IM 83K
    • Suspension check with cryogenic temperature
  • Investigation of the noise in the new oplev light source
  • Investigation of the TMSX beam shape
  • Investigation of the ADC noise
• Y arm commissioning
  • Pumping down ongoing
  • IY cooling : This week
• Center area commissioning
  • Mid-size baffle SRM : Partially done, need to move to final position
  • Study for installation of the new laser
    • Set inside the PSL room
    • Chiller problem
• REFL table investigation
  • Check power budget
• Beam dump around IFI
  • Many ghost beam
  • beam dumper from reflection beam of the PRM
• ALS CARM/DARM
  • Just started the investigation

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