2019/4/17(Wed.)

Schedule

• Center

  • 3/25: Venting

  • 3/27-4/9: Fixing PR2 or others

    • 4/4 -4/5: Gluing

    • 4/8: alignment check

    • 4/8-10: OSEM adjustment

  • 4/10: alignment check

  • 4/11: VIS final health check

  • 4/11-12: Closing

  • 4/12: Pump down

  • 4/29,30: Leak check
• ITMX:

  • 3/19: Cooling stop

  • 3/25: Venting start

  • 3/27: Opning chamber

  • 3/27~: Fixing thermal touch

  • 4/2~: closing chamber and start pumping down

  • 4/10: Cooling starts.

• Xend

  • 3/25: closing and pump down

  • 4/8: Leak check

  • 4/9-10: venting

  • 4/11: Exchange a broken LED for Photo sensor

  • 4/12: closing chamber and start pumping down

  • 4/22: Leak check
  • 4/22: Cooling start
• Yend

  • 3/26: Venting start

  • 3/28~: Fixing short inside chamber

  • 4/3: Fixing F0 actuator

  • 4/4~: closing chamber and start pumping down.

  • 4/10: Cooling starts.

• April: Measurement of TF, payload diagonalization on ITMX
• End of April~: DRMI commissioning
• End of April~: Y arm commissioning
• ~End of May: FPMI commissioning

Note

• No 1pm Commissioning meeting this week(4/15-19).

Night work

• Alignment (Nakano, Enomoto, Sugimoto, Yokozawa)

Weekend

Report of work

• Type Bp: Based on measurements of TF, PR2 and PR3 looks healthy. PRM needs more time.
• Type A: ETMX may have swapped cable.
• SR3 TF seems to be healthy.
• CRY: ITMY cannot show role resonance. It may have touching. No need to open chamber again.
• MIF: both end gate valves were opened.
  • GR reached ETMX.
  • GR reached ETMY and confirmed hitting center.

Work plan

• Health check Payload of ETMX will be performed.
• CAL: maintenance ETMX circuit today and tomorrow.