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Editor: RyutaroTakahashi
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Date: 2023/1/20 13:30- Date: 2023/1/20 13:30-13:50
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Participants: Participants: Takahashi, Fabian, Mitsuhashi, Sato, Hirata, Tanaka, Ushiba, Uchiyama, Aso

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Status
    2. Other items
    3. Discussion
  3. VIS Meeting
    1. Summary Report
      1. Type-A
      2. Type-B
      3. Type-Bp
      4. Type-C
      5. Electronics
      6. Control
    2. Schedule
    3. Safety
    4. Discussion
    5. Travel Plans
    6. Next meeting

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2023/1/27 13:00-13:25

Participants: Takahashi, Node, Hirata, Kimura, Sato, Yokozawa, Mitsuhashi, Miyoki, Uchiyama, Washimi, Ushiba, Akutsu, Aso, Ikeda

Acceptance check document

Status

  • Type-A: Test of IP control with ACCs in IX. Offload of F0 in IY
  • Type-B:
  • Type-Bp: TF measurement of BF.
  • Type-C: Monitoring of the OMMT1/2/OSTM suspensions in 1/30-2/1.

Other items

  • Oplev:
  • ACC: IP control in IX.
  • Commissioning:
  • Vacuum system: Investigation of broken ISPs. Vent of the OMC chamber on 1/30.
  • Heater control: Adjustment in IY.
  • TMS:

Discussion

VIS Meeting

Date: 2023/1/20 13:30-13:50

Participants: Takahashi, Fabian, Mitsuhashi, Sato, Hirata, Tanaka, Ushiba, Uchiyama, Aso

Summary Report

Type-A

  • IP control using accelerometers.
    • Tested with the MPC for ITMX and the LPC for ITMY. The controls were successful. The noise spectra of the geophones became worse at frequencies higher than 1Hz.
    • We plan to test with the HPCs in EX and EY to compare.

Type-B

Type-Bp

  • Ushiba-san measured TF from the seismometer on ground and the BF Damper in longitudinal.
  • The calculation of the inter-calibration factor between the seismometer and the BF Damper LVDT is ongoing. There's no result yet.

Type-C

Electronics

Control

Schedule

  • Type-A: IP control with ACCs.
  • Type-B/Bp:
  • Type-C: Monitoring of the OMMT1/2/OSTM suspensions.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 1/30

  • Fabian will be away on Friday 3rd of February.

Next meeting

  • 2023/2/3(FRI) 13:30-

KAGRA/Subgroups/VIS/VISMinutes20230127 (last edited 2023-01-27 13:55:23 by RyutaroTakahashi)