Minute of KAGRA commissioning meeting
- Date: 2018/3/13 11AM~12PM
- Attendance: Miyakawa, Aso, Izumi, Ushiba, Yamamoto, Koseyama
- eZuce: Hirose, Tomaru, Miyoki, Shoda, Inoue
1. Report of work of the last week and plan of work
- Alignment, ETMY: Izumi
- Tuning of ETMY is still going on. ETMY yaw motion is still too large.
- Trying feedforward, but not so effective.
- BF is also being tuned.
- Alignment to REFL port was done.
- Testing full LSC model started. It will be run at k1imc.
- RT model seems to have additional time delay ~61usec to 200usec. Unknown.
- Beam will be checked every night.
- CAL group also requires iMC in the night.
- Some of SUS, specially IMMT showed jumps several times, probably due to duct connection.
- One of the flat ribbon cables to picomotor was cut and broken between the connector and cable, probably due to the duct connection.
- Tuning of ETMY is still going on. ETMY yaw motion is still too large.
- CAL:
- X end PD was removed. Baffle PD will be located instead. Changing PD will be done around 3/26.
- Cryo:
- Current temperature is 18K. Semi equilibrium point exist and it was fallen to the point a week before.
2. Schedule of ETMX installtion
- See the schedule at the commissioning top page.
- One missing tool was found, it takes several days, but no delay at schedule.
3. Tasks or discussions
Feed back to BS for MICH
- Experimental side: no matter.
- Data analysis side:
- LSC model(Michimura, Izumi)
- Full model will be implemented at k1imc.
- CAL model location? at the same k1imc, or k1test with Dolphin connection.
Selection of storing DAQ channel -> DGS, before phase 1
- Check the total amount.
Screens at control room -> who, when?
- Needs laser safety information.
GW alert: online alert in the control room might be prepared. -> Togoshi
4. Phase2
Others
- Frequency noise can be measured by middle lock. Large intensity noise can be a problem.
- Next meeting: 3/13