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Editor: RyutaroTakahashi
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Date: 2022/7/8 14:00- Date: 2022/7/8 14:00-14:15
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Participants: Participants: Takahashi, Uchiyama, Fabian, Tanaka, Aso, Ushiba, Washimi
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 * We replaced  the small SRM mirror. The process went smoothly. I measured IM transfer functions yesterday, but I haven't compared with older measurements. Klog pending.
 * With Yokozawa-san, we checked whether the SRM and SR3 oplev beams were reaching  the central regions of their respective mirrors. The beam in SR3 is a little lower than expected, but not by too much. 		 * We replaced the small SRM mirror. The process went smoothly. I measured IM transfer functions yesterday, but I haven't compared with older measurements. Klog pending.
 * With Yokozawa-san, we checked whether the SRM and SR3 oplev beams were reaching the central regions of their respective mirrors. The beam in SR3 is a little lower than expected, but not by too much.

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Schedule
    2. Status
    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: 2022/7/8 13:00-13:30

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

Post O3 Upgrade portal

Schedule

  • IX: Offload of the F0. Adjustment of the OpLev for MN/PF.

  • EX: Adjustment of the OpLev for MN/PF.

  • IY:
  • EY: Leak test (Leak point was in the GV itself). Repair of the GV. Offload of the GAS filters.
  • Type-B: Replacement of the mirror in SRM.

  • Type-Bp: Adjustment of the OpLev in PR2/PR3. Investigation of the PR2 suspension. Health check in the next week.

  • Type-C: Health check of the IMMT1/2 in the next week.

Status

  • Replacement of cables: EXT and BF temp.
  • TM height setting:
  • Oplev:
  • ACC:
  • Commissioning in air:
  • Commissioning in vacuum: Keeping the X-arm. Health check in Y-arm.
  • Acceptance check:
  • New vacuum pumps: When should we implement the ion pumps? It is better to do before cooling.
  • Heater control: Pending.
  • TMS:

Discussion

VIS Meeting

Date: 2022/7/8 14:00-14:15

Participants: Takahashi, Uchiyama, Fabian, Tanaka, Aso, Ushiba, Washimi

Summary Report

Type-A

  • Offloaded the GAS filters after the pump down in EY.
  • Replaced the cables for BF-FR, BF-TEMP, BF-GAS in EY.

Type-B

  • We replaced the small SRM mirror. The process went smoothly. I measured IM transfer functions yesterday, but I haven't compared with older measurements. Klog pending.
  • With Yokozawa-san, we checked whether the SRM and SR3 oplev beams were reaching the central regions of their respective mirrors. The beam in SR3 is a little lower than expected, but not by too much.

Type-Bp

  • Visual inspection of PRs. PR2 only has a small hexagon between the BF and the IM.

Type-C

Electronics

Control

Schedule

  • Type-A:
  • Type-B: Health check.
  • Type-Bp: Health check.
  • Type-C: Health check of IMMT1/2.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 7/11

  • Hirata: 7/12-15

The week from 7/18

  • Sato:
  • Hirata:

Next meeting

  • 2022/7/15(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220708 (last edited 2022-07-08 14:21:52 by RyutaroTakahashi)