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Editor: RyutaroTakahashi
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Size: 1526
Editor: RyutaroTakahashi
Comment:
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 * 2025/4/10 10:00-  * 2025/4/11 10:00-

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 10:00-11:00

Zoom

Participants: Ushiba, Washimi, Sato, Tanaka, Takahashi

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

  • 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

  • 2025/4/11 10:00-

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