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* Diaggui calculates float and sometimes coherence could not be measured. |
Minute of KAGRA commissioning meeting
- Date: 2018/5/8 11AM~12PM
- Attendance: Miyakawa, Yamamoto, Aso
- eZuce: Suzuki, Hirose, Yokozawa, Izumi
- 5/28 extension meeting
1. Report of work of the last week and plan of work
- IFO, ETMs: *Izumi, Enomono
- Well done! Duty cycle is 80-90% in 1-5days, and 15-60% in 6-9days.
- IMC was quite stable.
- ETMY was dominant for stability of IFO in the last 4 days.
- Optical gain fluctuated 20~30% due to the contrast defect.
- BS coupling between L to P and Y was sometimes dominant for the contrast.
- Error of Sunup asymmetry was also dominant by optical gain.
- DAQ
- DAC of PR3 was dead. Restarting k1pr3 fixed this problem. We are not sure the cause.
- Timing of dc0 sometimes shifted. Restart daqd of k1dc0 fixed this problem. We are not sure the cause.
- Diaggui calculates float and sometimes coherence could not be measured.
- Operation
- Almost done.
2. Discussion after the phase 1 including operation
- Troubles:
- ETMY
- ETMX
- IFO
- CAL
- DAQ
- VAC
- CRY
3. Phase 2
- Each stage and target
3. Tasks or discussions
- 5/28 extend chief meeting for looking back phase 1.
Others
- Baffle at ETMX will extracted in the week of 5/7, and it will be black coated.
- Next meeting: 5/8.
1. Discussion after the phase 1 including operation
- IFO
- LSC, CAL etc.
- damping
- DAQ
- Cryogenic
- Vacuum