Agenda/Minutes of the VIS Meeting on 2020/9/25

2020/9/25 13:00 -

CRY+VIS Interface Meeting

Participants: Takahashi, Miyo, Uchiyama, Aso, Hirata, Sato, Ikeda, Tomaru, Hagiwara, Kimura, Ushiba, Sawada、Akutsu

Participants: Takahashi, Fabian, Hirata, Satou, Terrence, Miyo, Aso, Washimi, Ishizaki

[Fujii] Can you please update the status of paper writing especially about the Type-A mechanics and its control? I also would like to know the rough schedule that you team are planning. Please let me know. Leaving your comments here will be enough. O-tsu-ka-re-sa-ma-de-su. (My account will have to be removed I guess btw..)

[Sato] Design of the limit switches for BS IP FR. BS IP FR limit switch_20200924.pdf
I submitted the paper to C&QG, finally.
Hirata-san and I had an information session for Washimi-san.
I asked to Takahashi-san for some long poles to mount the dial gauges around outer frames. Maybe there are some in TAMA. Work in progress.
Given the new temperature conditions in the central room, I offloaded fishing rods:
- SR2 (klog 15081) and SRM (klog 15083) fishing rods are working well.
- BS: F0 and BF fishing rods look healthy and F1 one is at the bottom of its range (klog 15071).
- SR3: F0 fishig rod is healthy, the F1 one is still jammed and BF one at its upper limit (klog 15070).
- I changed some DC filters setpoint and updated BURT and SDF files. In SR3 I keep the height of the mirror constant.
For SR3 F1, I calculated the amount of ballast the needs to be removed to bring it to nominal height: 31 grams or less (klog 15102). This number has be reviewed once I calculate how much mass we need to remove from the IM. The BF fishing rod needs to be in mid-range with control off to know.
Next week:
- Same calculation for the other filters: they require setting the fishing rods to mid-range.
- With the new temperature conditions I need to measure IP resonant frequencies again.
- LVDT card document

KAGRA is in "RSE Trial" now. "SEO is thinking about possibility for one week extension and the schedule reconstruction for vacuum chamber opening."
Preparation work.
- The preparation work will be started on Oct. 1st.
- Schedule and assignment of personnel
- Cleaning procedure.
- Inventory sheet with the segment name is necessary (Example of Type-A).
Schedule
Procedure documents.
Criteria in the acceptance test Sheet.
Presentation
- PAB (10/8)
- Chief Meeting (10/12)

The week from 9/28

The week from 10/5