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← Revision 2 as of 2025-03-27 16:26:28 → ⇥
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Editor: RyutaroTakahashi
Comment:
Deletions are marked like this. Additions are marked like this.
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  * We asked ATC about the design of the IRM damper as the item in 2025FY.   * 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]].

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: 2025/3/28 10:00-

Zoom

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.

  • 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.
    • The STM2 was successfully fixed on 26th.
  • Small Type-C suspensions with mini-GAS.

R&D

Discussion

Next meeting

  • 2025/4/10 10:00-

KAGRA/Subgroups/VIS/VISMinutes20250328 (last edited 2025-03-28 15:31:40 by RyutaroTakahashi)