Contents
Agenda/Minutes
CRY+VIS Interface Meeting
Date: 2023/6/9 13:00-13:15
Participants: Takahashi, Mitsuhashi, Uchiyama, Ushiba, Ikeda, Miyoki, Hirata, Yokozawa, Kimura, Tomaru, Akutsu
Suspensions
- Type-A: Try of the tidal control in EX.
- Type-B:
- Type-Bp:
- Type-C: Change of the watchdog threshold to 5000 in OMMT1, OMMT2, and OSTM
Other items
- Oplev:
- ACC:
- Commissioning:
- Vacuum system: Planning the replacements of the TMP in SR2 and the HV connector for ISP in IXA.
- Heater control:
- TMS:
Post O4a
- Measurements of the DAC noise.
- Measurements on the sensor correction in SR2.
- Optimization of the damping control in PRs.
- IP control with the ACCs.
- In-vacuum accelerometer for IOO: PEM started the examination.
- Hight adjustments of Type-A in the cooling.
- Measurement of the drum-head modes.
- Check of the length Oplev.
- Check of the sensor noise in the cryo-payloads.
- Temperature control for the Oplev: Preparing for the heater controller.
- Check of the space in the IMMT chamber.
Discussion
VIS Meeting
Date: 2023/6/9 10:00-11:00
Participants: Takahashi, Ushiba, Aso, Hirata
Summary Report
Type-A
Type-B
Type-Bp
Type-C
Electronics
Control
R&D
Schedule
- O4a until 6/21.
Safety
Discussion
- Towards O5
- 30mHz IP for Type-A (Remote stopper): What is merit? Simulation is necessary.
- Remote adjuster of F1 damper for Type-A/B: Height adjustment at BF is more important.
- H4 geophone for Type-B
- Accelerometer for Type-B: Manufacturing is ongoing in ATC.
- BF damper for Type-B: Design to avoid reinstallation of the tower.
- Wide range OSEM for Type-B/Bp: Priority is not high.
- Improvement of the Type-C suspension: 1-3Hz vibration made a jump in pitch. KFC suspension with size variation can be available.
- In-vacuum camera
- Damping of Type-Bp suspension: Test after O4a.
- Active isolation table for IOO beyond O5
Next meeting
- 2023/6/23 10:00-