• KAGRA
• Commissioning
• Meetings
• Others
• 20190611

Minute of KAGRA ERun1 summary meeting

• Date: 2019/6/11 15:00~16:00
• Attendance: Miyakawa, Aso, Oshino, Ogaki, Kokeyama, Nakano, Enomoto, Kozakai, Miyoki, Miyo, Yokozawa, Haino, Suzuki, Koyama, Nakagawa, Tanaka, Sugimoto, Stefan
• Zoom: Yokoyama, Youngmin, Inoue, Takahashi, Shoda, Uchiyama, Takeda, Akutsu, Yamada, Suzuki, Sawada

Over all summary

• X arm lock
  • Lock was quite stable.
  • PR3 troubles for the first 30 min, probably due to temperature.
  • Oplev itself is something wrong, and PR3 is largest one.
• PMC drift due to the temperature change, and out of the range of PZT lost lock.

  • temperature

• Green power was lower now, but not on Saturday, but on this week.
• First Sensitivity monitor

Parallel works during Run

• ETMY installation work
• DAQ trouble

Data

• Segment

• Lock flag, Science mode, effective data
• Duty cycle
• Data rate
• Yokozawa will collect necessary data.

Action Items

• Long term temperature investigation
• Calibration for Mass lock
• Limited by ADC noise. Needs whitening filters.
• Noise hunting for frequency noise
• Needs MICH calibration.
• Gardian for DAQ
• Real time camera
• COM team should take a rest during Run.
• Needs shift ASAP

Next Run

• With LIGO commissioners.
• Saturday or Friday?
• 7/12 or 13.
  • ITMY trouble?

Others

Minute of temperature control meeting

• Date: 2019/6/11 12:15~13:00
• Attendance: Miyakawa, Yokozawa, Enomoto, Nakano, Kokeyama, Miyoki, Aso, Sugimoto, Stefan
  • Zoom

Memo

• Cause of instability in PSL.
  • Sensor position.
  • Not circulating well.
• To do
  • Stopping Water cooler around MCE.
  • Move sensor position.

  • Stopping all AC in the PSL? -> temperature goes to more than 30deg.