Minute of KAGRA commissioning meeting
- Date: 2018/3/20 11AM~12PM
- Attendance: Miyakawa, Aso, Yokozawa, Izumi, Akutsu
- eZuce: Ushiba, Suzuki, Tomaru, Inoue, Shoda
1. Report of work of the last week and plan of work
- Alignment, ETMY: Izumi
- Tuning of ETMY is still going on. Currently RMS is ~10urad.
- ETMY yaw motion is still large.
- Length, Yaw, Translation (diagonal of L) of BF dampings are not easy.
- Only Yaw seems to be damped, but combination of them is not going well.
- Beam will be checked every night, specially after pump down yesterday.
- IMMT1,2 shifted in pitch by ~200urad, in yaw by ~100urad.
- Tuning of ETMY is still going on. Currently RMS is ~10urad.
- MIF: Izumi
- LSC full model has been implemented in k1imc0.
- CAL model is being tested on k1imc0.
- Cal line will be produced in CAL model.
- Invisible calibration line will be implemented in LSC model.
- k1bs, k1imc will be connected by Dolphin. ETMs are connected to k1imc by RFM.
- CAL: Yamamoto, Yokozawa
- Started using IMC as training of calibration.
- Simple calibration will be implemented.
- X end PD will be removed and Baffle PD will be located instead. Changing PD will be done in the week of 3/26.
- BURNDY to D-SUB9pin transformer should be implemented.
- T cam at Y end is now stopped. It will be fixed soon. T cam X end will start in the next week. Both front T cams are woking.
- Started using IMC as training of calibration.
- Cryo:
- Current temperature is 18K.
2. Schedule of ETMX installtion
- See the schedule at the commissioning top page.
3. Tasks or discussions
Selection of full channel -> DGS Yamamoto
Selection of science channel -> Commissioning Izumi
- Screens at control room
- Sensitivity.
- PEM.
- 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: 3/27