Agenda/Minutes on 2021/1/29

Zoom Meeting

CRY+VIS Interface Meeting

13:30-

Participants:

Post O3 Upgrade portal

• Schedule for IX: Connection is scheduled in the week of 2/8.
• Schedule for IY: Disconnection was scheduled on 3/11.
• Schedule for EX: Connection was scheduled in the week of 3/15.
• Corrugate tube fixing jig: Re-measurement is planed in 2/28-3/2 at IYV.
• Commissioning in vacuum:
• Acceptance check: Cryo-payload in IX and Type-A tower in EY are on going.
• Jig for FC painting: Under manufacturing.
• PF actuator: by the end of January.

VIS Meeting

14:00-

Participants:

Progress report

General

• O3GK Noise Budget paper [Washimi] : The paper writing team (Kokeyama, KYamamoto, Washimi) is writing the draft.
  • Seismic noise through Type-A tower : on going

    • This noise is evaluated by the TF (Shoda-san's simulation). -> Does it include the actual situation of GAS filters? -> Maybe "yes" (by Miyo-kun)

  • Type-A ctrl : on going
  • Type-B ctrl : almost written. Please check it.
  • Type-Bp ctrl : almost written. Please check it.

Type-A

• Implemented the cabling for cryo-payload in IX.
• Assembled the connector cables for ACCs.
• Assembled the geophone pods for ITMY.

Type-B

Type-Bp

Type-C

Controls

Electronics

Towards O4

• Type-B/Bp remedy work is on going.
• Installation of Type-A is on going in EY.
• Schedule.

  • Chart

• Procedure documents.

  • Type-A tower installation

  • Limit switches

  • Limit switch connecting guide

  • Replacement of TF blades

  • Wire gluing in PR3

  • Type-B remedying work

• Criteria in the acceptance test.

  • Inspection document (sample)

Safety

Discussion

• Temperature setting around Type-B.

Travel Plans

The week from 2/1

• Takahashi: 2/1-5
• Sato: 2/1-5
• Hirata: 2/1-5
• Yano: 2/1-5

The week from 2/8

• Takahashi: 2/8-12
• Sato: 2/8-12
• Hirata: 2/8-12
• Yano: 2/8-12

Next meeting

• On 2020/2/5(Fri)