2019/5/7(Tue.)

Schedule

• Center

  • 4/12: Pump down

  • 4/29,30: Leak check

  • 5/2: Vent and pumpdown
  • 5/9: leak check
• ITMX:

  • 4/10: Cooling starts.

• Xend

  • 4/25: Pumpdown

  • 5/2: leak check

  • 5/2: Cooling start

• Yend

  • 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

Night work

• Y arm commissioning, from the control room.

Weekend

Report of work

• IR laser frequency was too noisy for mass feedback lock.
  • Frequency is stabilized by X arm cavity, and Y arm will be locked to stabilized laser.
• Beam spot on ITMY was too high.
  • Needs BS camera.
  • Height of ITMX and ITMY will be measured by Suzuki-san.

Work plan