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Date: 2025/8/29 10:00- Date: 2025/8/29 10:00-10:40

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: 2025/8/29 10:00-10:40

Zoom

Participants: Ushiba, Yokozawa, Washimi, Takahashi

Topics

Type-A

  • Offload during O4c.
    • The BF GAS in IX was sometimes offloaded.
  • ACCs for the IP controls.

    • Evaluating the FLDACC with DGS in ATC (report). Noise budget should be made. Ikeda-san recovered the DGS after the power outage again.

Type-B/Bp

  • IRM damper for Type-B.
    • The parts have been delivered. Hirata-san will assemble them tentatively.
  • Enclosure for the SG card in an independent box.
    • Tanaka-san made a prototype box.
  • IP for Type-Bp.
    • Started a design.

Type-C

  • Active isolation table for OMC.
    • Sato-san is asking the chamber maker to remake the chamber.

    • Sato-san designed the new geophone pod.

    • Investigating the effects of cabling for the geophones (report).

  • Small Type-C suspensions with mini-GAS.

R&D

Discussion

  • FY2026 Kakenhi.
    • Hybrid low-frequency vibration isolation system toward ET. The submission deadline was Aug. 27th.

Next meeting

  • 2025/9/12 10:00-

KAGRA/Subgroups/VIS/VISMinutes20250829 (last edited 2025-08-29 11:41:27 by RyutaroTakahashi)