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Editor: RyutaroTakahashi
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Date: 2022/3/4 13:00- Date: 2022/3/4 13:00-13:30
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Participants: Participants: Takahashi, Akutsu, Ikeda, Ushiba, Aso, Node, Sato, Miyoki, Hirata
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 * IX: Glitch in the F3 signals. Windshield for the MN oplev. Cooling of the cryo-shield.  * IX: Glitch in the Oplev signal was reduced in the circuit. 
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 * EY: Preparation for the accelerometers.  * EY: Preparation for the accelerometers. The pump was set on 3/4.
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 * Oplev: Setup of the Oplev in EY was in 70%. Not yet in IY.  * Oplev: Setup of the Oplev in EY was almost done. Not yet in IY.
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 * Commissioning in vacuum:  * Commissioning in vacuum: Lock time is about 30min.
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 * Power source for Oplev: Check of the electric ports is scheduled on 3/15.  * Power source for Oplev: Check of the electric ports in 3/2-3.
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Date: 2022/2/25 14:00- Date: 2022/3/4 14:00-

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: 2022/3/4 13:00-13:30

Participants: Takahashi, Akutsu, Ikeda, Ushiba, Aso, Node, Sato, Miyoki, Hirata

Post O3 Upgrade portal

Schedule

  • IX: Glitch in the Oplev signal was reduced in the circuit.
  • EX: Health check.
  • IY: Investigation of the suspension behavior.
  • EY: Preparation for the accelerometers. The pump was set on 3/4.

Status

  • Replacement of flip cables: Stock of the feedthrough flange.
  • TM height setting: ITMY.
  • Oplev: Setup of the Oplev in EY was almost done. Not yet in IY.
  • ACC: Installation was postponed in EY.
  • Commissioning in air: Alignment of ITMY.
  • Commissioning in vacuum: Lock time is about 30min.
  • Overall commissioning:
  • Acceptance check:
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers: Implementation in this week.
  • Heater control: Test in IXV/EXV.
  • Power source for Oplev: Check of the electric ports in 3/2-3.
  • TMS: Installation of the balancer in 2/28-3/1.

Discussion

VIS Meeting

Date: 2022/3/4 14:00-

Participants:

Summary Report

Type-A

  • Investigating the suspension behavior in IY.

[Ishizaki]

  • Bending test of the SiC pipe (Report).

Type-B

Type-Bp

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A team: Investigation of GAS filters in IY. Installation of ACCs in EY.
  • Type-B team:

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 3/7

  • Takahashi: 3/7-11
  • Sato: 3/7-11
  • Hirata: 3/8-11

The week from 3/14

  • Takahashi: 3/15-18
  • Sato: 3/15-18
  • Hirata: 3/15-18

Next meeting

  • 2022/3/11(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220304 (last edited 2022-03-04 14:49:58 by RyutaroTakahashi)