• KAGRA
• Subgroups
• DET
• Meeting
• 220620

KAGRA Commissioning status at DET meeting

• Date : 2022/06/20

Overall schedule

• (In case of no trouble)
  • 6/20 - 6/24 Leak of End Y
  • 6/27 - 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
  • 8/1 - Closing the center area
  • Mid size baffle installation
  • ISS installation
  • High power laser installation
• (LVK information)

  • O4a will start March 2023 web

Progress of commissioning

• Y arm commissioning

  • IY leak test done klog#21135

  • IY oplev windshield installed klog#21192

  • End Y : Start the leak (very slowly to avoid the dust.)

    • 1 week leaking, fixing early next week klog#21191

• Center area commissioning

  • MICH fringe detected (klog#21149)

  • Mirror cleaning(first contact) and mid-size baffle installation
    • PR2 : Installed

    • SR2 : Installed cleaned

    • BS : Installed cleaned

    • PRM : Installed cleaned

    • PR3 : Installed cleaned

    • SR3 : Not yet cleaned

    • SRM : Not yet (When replacement?) cleaned

  • Others

    • ITMX glitch from ADC klog#21185

    • PR traverser limit switch install
    • Green related work

Interesting data

• X arm cavity
  • Both IR and GR
• 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?)