Minute of KAGRA commissioning meeting

Date: 2019/5/28 15:00~16:00
Attendance: Miyakawa, Tomura, Fabian, Oshino, Washima, Yokozawa, Nakano, Terrence, Dahan, Kozakai, Pan, Sawada, Nakano, Yamada
Zoom: Miyoki, Takahashi, Eleonora, Inoue, Fujii

Cryo cooler for Yarm stopped and finesse was recovered.
- Xarm 1451(1) with ITMX 73 K ETMX 120 K
- Yarm 1312(5) with ITMY 65 K ETMY 75 K
Cryo status and plan
- ETMs has no dew on 80K viewport but ITMs has still dew on their viewport.

Results of finesse measurement looks a bit too high. Needs estimation of loss inside cavity for Yarm.
We should keep finesse measurement for going back the cooling down ITMY.
For DRMI preparations, optics, circuit, cabling, control models are almost ready.
- Type A control test should be done during DRMI.
- Type B and A needs some IFO as sensor.
Write manual if you experienced something.
CAL: MICH and DRMI calibration model is ready.
Remote work should be managed by calling to control room or sending email to gokagra.
Smooth transition for when watch dog is engaged has been implemented to Type B. It should be implemented to Type A.
- When? -> Maybe tomorrow morning during maintenance time or the next week during DRMI.
Engineering run:
- IMC is the first candidate which will be used for run. This is because Guardian is ready for only IMC, not for Michelson or X arm.

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