Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2025-04-10 18:10:21 →
Size: 1241
Editor: RyutaroTakahashi
Comment:
← Revision 3 as of 2025-04-10 18:18:26 → ⇥
Size: 1320
Editor: RyutaroTakahashi
Comment:
Deletions are marked like this. Additions are marked like this.
Line 26: Line 26:
  * The new geophone pre-amp boards had a problem.   * The new geophone pre-amp boards had a [[https://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Choke2R2.pdf|problem]].

Contents

  1. VIS Meeting
    1. Topics
      1. Type-A
      2. Type-B/Bp
      3. Type-C
      4. R&D
    2. Discussion
    3. Next meeting

VIS Meeting

Date: 2025/4/11 10:00-

Zoom

Participants:

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. It is better to mount a 1U pannel like this.

  • Yaw damper for Type-B.

    • We have asked ATC about the design of the IRM damper as the item in 2025FY. Updated 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
  • Small Type-C suspensions with mini-GAS.

R&D

Discussion

Next meeting

  • 2025/4/25 10:00-

KAGRA/Subgroups/VIS/VISMinutes20250411 (last edited 2025-04-11 11:04:50 by RyutaroTakahashi)