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| Participants: | Participants: Aso, Akutsu, Sato, Takahashi |
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| * Evaluation of the FLDACC is ongoing with DGS in ATC. The present status is [[https://www.dropbox.com/scl/fi/rjom1y91h8v1bmusccnc5/FLDACCtest.pdf?rlkey=cqsciuul20wso1xbyvp0v0psw&dl=0|here]]. | * Evaluation of the FLDACC is ongoing with DGS in ATC. The present status is [[https://www.dropbox.com/scl/fi/ls12u2sk0lj7udw7079w5/FLDACCtest.pdf?rlkey=pdnukiczt8qmkn4i4t6b7buh2&dl=0|here]]. |
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| * We have asked ATC about the design of the IRM damper as the item in 2025FY. Updated design is [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16608|here]]. | * We have asked ATC about the design of the IRM damper as the item in 2025FY. The updated conceptual design is [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16608|here]]. |
Contents
VIS Meeting
Date: 2025/4/11 10:00-
Participants: Aso, Akutsu, Sato, Takahashi
Topics
Type-A
- ACCs for the IP controls.
Evaluation of the FLDACC is ongoing with DGS in ATC. The present status is here.
Type-B/Bp
- Enclosure for the SG card into an independent box.
- Tanaka-san made a prototype box. 1U panel will be prepared to mount the box.
- Yaw damper for Type-B.
We have asked ATC about the design of the IRM damper as the item in 2025FY. The updated conceptual design is here.
- IP for Type-Bp.
Type-C
- Active isolation table for OMC.
- Sato-san performed the FEM analysis on breadboard thickness.
The new geophone pre-amp boards had a problem.
- It isn't easy to purchase L4-C geophones.
- Vibration in the IFI chamber
Washimi-san suggested a handmade in-vac. mini-geophone.
- Small Type-C suspensions with mini-GAS.
R&D
Discussion
Next meeting
- 2025/4/25 10:00-