• KAGRA
• Commissioning
• Weekly
• 20190326
• Agenda

2019/3/26 Weekly commissioning meeting topics

• Assignment of staffs

  • https://teamup.com/kswnmta8p18h6u1uab

Schedule

• Center

  • 2/26-27: Venting

  • 2/28-3/15: Health check and maintenance for VIS

    • PRM: One flag was dropped. -> leave it

    • 3/4-14 PRM: Misalignment does not reach where beam hits damper.

    • 3/6 PR3: range -> incline by 20-30mrad at mirror because of bistable.

    • 3/15: BS: Yaw offset adjustment by hand. -> 3/5-6

      • 3/12: BS ok

    • 3/15: some SRs work

  • 3/5 afternoon or 3/6 morning: Coolers for ITMs will be stopped for 2-3 hours to change water.

  • 3/18: Re-alignment

  • 3/19-21: Closing

  • 3/22: Pump down

  • 3/25: Venting

  • 3/27: Fixing PR2
  • 4/3: Closing and pump down
• ITMX:

  • 3/19: Cooling stop

  • 3/25: Venting start

  • 3/27: Opning chamber
  • 3/27~: Fixing thermal touch
  • 3/28? ~4/3?: closing chamber and start pumping down.
  • 4/12: Cooling starts.
• Xend

  • 2/11-2/14: Xend NAB installation

  • 2/21: Removing FC, Payload release

    • 2/27: ETMX release

  • 2/23-3/6: Xend Pcal finalization 1

    • Periscope installation

    • 3/6: Beam position by IR and Green

  • 3/5 AOS: EY and EX(if they have time) work.

  • 3/6: Green X alignment (no IR), and no hazard at Y end.

  • 3/11, ~20: Xend WAB finalization.

  • 3/11~3/15: ETMX tuning.

  • 3/19: ETMX finalization by Takahashi

  • 3/18,19: ETMX alignement

  • 3/23-24: Pcal alignment

  • 3/24: Removing PD

  • 3/25: closing and pump down

  • 4/12: Cooling start
• Yend

  • 1/25-2/20: Yend Pcal finalization

  • 3/5: EYA remaining works by Enomoto, Inoue.

  • 2/25-3/5: Yend WAB finalization

  • 3/6: Y end closing (no laser hazard at least in the morning)

  • 3/7: Y end pump down

  • 3/22-23: leak test

  • 3/26: Venting start

  • 3/28~: Fixing short inside chamber
  • ~4/2: closing chamber and start pumping down.
  • 4/10: Cooling starts.
• 4/1~ : Night work starts, daily meeting will be moved to 1PM
  • Summary of work will last for a while in the morning meeting.

• 2/18-2/22: PRMI commissioning

• End of April~: DRMI commissioning
• End of April~: Y arm commissioning
• ~End of May: FPMI commissioning

Discussion

• Schedule estimation for commissioning with feedback to ITMY.
  • 4/10: ETMY cooling start
  • 5/7: ETMY cooling done
  • 3/29: ITMY cooling done
  • 4/1-4/26: ITMY TF measurement for hierarchy control 2.
  • 4/1-4/26: ITMY payload matrix diagonalize
  • 5/7-5/10 Y arm lock with mass feedback to ITMY
  • 4/12: ETMX, ITMX cooling start
  • 5/9: ETMX, ITMX cooling done
  • 5/7-5/10 X arm lock with green light
  • 5/13-17: FPMI lock
  • when both ends are not available: DRMI lock acquisition. It will be continued after FPMI is locked.
• Strategy for TF measurement and payload diagonalization.

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=8454: Estimation for L motion of EMTX

  • There is a possibility that ITMY is not going low temperature.
• When should we start daily meeting?
• IOO will use iMC before starting Y arm commissioning.
• How to avoid troubles?