VIS Meeting 2020/7/10
Agenda/Minutes of the VIS Meeting
2020/7/10 14:00 - 15:00
Zoom meeting (https://zoom.us/j/203743987)
Participants: Takahashi, Shoda, Sato, Hirata, Tanaka, Ishizaki, Miyo, Fabin
Progress report
- General
- [Miyo] by July 17, 50% done, DGS preparation for new accelerometer test in KAGRA mine
- [Miyo] by July 31, 20% done, Make a cabling diagram for O4
- [Miyo] by Aug 28, 20% done, Preparation for prototype of heater jacket on VIS chamber
- [Miyo] by Aug 28, 20% done, Enable to control the limit switch of stepper motor
- Type-A
- Type-B
- Started SR tuning
- All models are restarted
- We will start from IP diagonalization
- Next step: Oplev diagonalization, TM actuator diagonalization, Sensor correction, Try blending
- Type-B paper
- Type-Bp
- PRM guardian is updated for MISALIGN state
- Type-C
- Controls
- Type-A paper
- Electronics
- New filter, which consists of LPF, DC-cut, and BPF, was tested. BPF at 10kHz employed Gaussian filter to make the phase delay be minimum.
- Go to the modification of LVDT driver in the next week.
Post O3
- Post Obs. tasks are on going. Sensor correction and suspension update for SRs were started.
- Submission of the plan for cleaning in the clean booths is requested by Miyoki-san who investigated and reported the present situation.
Post Obs. task
(https://docs.google.com/spreadsheets/d/1w4q8OvX9E6nkYSgshLYLoZH5yvQXHvGmL1agux8ztx0/edit?usp=sharing)
Task for O3c +Plan for the long OR brake
(https://www.dropbox.com/s/hoadb73fdyah02c/Post-O3%20task.xlsx?dl=0)
Task towards O4 (https://www.dropbox.com/s/60oygtwmckmdyj6/Towards%20O4%20on%20VIS%20.xlsx?dl=0)
Schedule towards O4 (https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11475)
Safety
Discussion
Travel Plans
- Takahashi: 7/20-22
Next meeting
- On 2020/7/17(Fri)