• KAGRA
• Commissioning
• Weekly
• 20190205
• Minute

Minute of KAGRA commissioning meeting

• Date: 2019/2/5 11:00AM~12PM
• Attendance: Miyakawa, Nagano, Lucia, Nakano, Aso, Akutsu, Miyo, Kozakai, Yokozawa, T.Yamamoto
  • Zoom: Kokeyama, Oshino, Enomoto, Hirose, Inoue, Miyoki, Kokeyama, Ushiba

Schedule

• Alignment seems to be on schedule by this weekend if no more serious trouble happens.

Discussion

• Hirose-san will come on Thursday and look at mirror surface or surface inside chamber.
  • WAB is located pretty close to mirrors on ITMX and ITMY. The gap is only cm order, so it is not important to look at mirror surface, but no easy.
  • Even if mirrors surface was dirty, we would have no way to clean through such small gaps.
• High sensitivity optical lever using Pcal beam looks good.
  • Noise budget should be considered if the new oplevs are used in the mirror control loop.
  • Commissioning team recommend to proceed it.
• SRM beam damp for intentionally misaligned SRM will be designed. It will be installed in summer as the same time as middle baffle.

Others

• Next meeting: 2/12.