• KAGRA
• Commissioning
• DailyWork
• 2019-03-18

2019/3/18(Mon.)

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.

  • 3/18-19: Re-alignment
  • 3/19: Closing
  • 3/20: pump down
• 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

    • 3/7,8: leak test

• 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, 18,19: Xend WAB finalization.

  • 3/11~3/15: ETMX tuning.

  • 3/19: Heatlink etc.
  • 3/19: ETMX finalization by Takahashi
  • 3/18,19: ETMX alignement
  • 3/21 closing
  • 3/22 Pumping down
    • Leak test
• 3/18~ : 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
• 3/25~?: DRMI commissioning
• 3/25-4/19: Y arm commissioning
• 3/25-4/19: FPMI commissioning

Note

• Night work does not start from 3/11 due to the 2weeks delay by VIS troubles.
  • It does not mean that night work is prohibited but it means that officially night shift responsible person won't be assigned and we have no daily meeting at 1pm.
  • Official night work starts 3/18 or 3/25, but not determined yet.

Weekend

Report of work

• Type B: Basically health check shows everything was ok.
  • One of the o-ring was fallen inside chamber, it will be fixed today.
  • IP LVDT of BS is something wrong. Chamber will be opened again?
• Type Bp: PRM was concluded nothing was touching. Today final check will be done.
  • Health check was done or sill is going one.
  • There is some possibility of touching when PRM is misaligned, but it does not matter.
• Type A: ETMX cryopayload was touching because upper part was too low. It was lifted up and cryopayload is free now. The gap is now 3mm since we are in room temperature.
  • Needs control of damp is the highest priority for IFO alignment.

Work plan

• PEM: Needs work at ETMX.
• Takahashi-san will check ETMX and if something is wrong he will fix.
• MIF: alignment work will be performed this afternoon.