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| * We asked ATC about the design of the IRM damper as the item in 2025FY. Conceptual design is [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16608|here]]. | * We asked ATC about the design of the IRM damper as the item in 2025FY. Conceptual design is [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16608|here]]. Actuator noise should be estimated by comparing it with the OSEM. |
Contents
VIS Meeting
Date: 2025/3/28 10:00-
Participants:
Topics
Type-A
- ACCs for the IP controls.
- Evaluation of the ACC is ongoing with DGS in ATC.
Type-B/Bp
- Enclosure for the SG card into an independent box.
- Tanaka-san is making a prototype.
- Yaw damper for Type-B.
We asked ATC about the design of the IRM damper as the item in 2025FY. Conceptual design is here. Actuator noise should be estimated by comparing it with the OSEM.
- IP for Type-Bp.
Type-C
- Active isolation table for OMC.
- Akutsu-san closs-checked the model with the Mathematica code. Jacks under the support bellows may be necessary to adjust the height of the table.
- The new geophone pre-amp boards had a problem. The power lines were grounded.
- Vibration in the IFI chamber
The geophone pod was assembled and passed the leak check, but we gave up on installing it. Washimi-san suggested a handmade in-vac. mini-geophone.
- The STM2 was successfully fixed on 26th.
- Small Type-C suspensions with mini-GAS.
R&D
Discussion
Next meeting
- 2025/4/10 10:00-