Agenda/Minutes on 2020/11/20

Zoom Meeting

CRY+VIS Interface Meeting

13:30-

Participants:

• Post O3 Upgrade portal

• Evacuation of EYC was started on 18th.
• The wire was disconnected from the cryo-payload in EX on 19th.
• Schedule: Evacuation of IYC on 20th.
• Jig for the FC painting.

• PF actuator: Measurement of coefficients --> calculation of the noise (by mid Dec.).

VIS Meeting

14:00-

Participants:

Progress report

General

Type-A

• Closed the feedthrough flanges on the top chamber in EY. The chamber was evacuated from 18th.
• Assembled the side stoppers and replaced the side plates on the BF in EY.
• Disconnected the wire from the cryo-payload in EX. The cable for the TF actuator was broken and one magnet dropped into the corrugate tube during this work.
• Released the jack for the top chamber in IY. The top chamber went down by 0.1-0.5mm.

[Type-A paper] Then what is going on about the paper reviewing... My JGW account looks unavailable now and I cannot collect much information about the current publication rules or so. How should I work on ... (Y. Fujii)

Type-B

Type-Bp

Type-C

Controls

Electronics

• Total 24ch combiner circuits for Type-A can be procured using the ICRR budget (2M JPY) in this FY.

Towards O4

• Type-B remedy work was started.
• Schedule.

  • Arrangement of personnel in Nov. (table)

  • VIS

• 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.

Safety

Discussion

• JPS Meeting 2021 Spring.

Travel Plans

The week from 11/23

• Aso: 11/23-27
• Takahashi: 11/24-27
• Hirata: 11/24-26
• Sato: 11/24-27

The week from 11/30

• Takahashi: 11/30-12/4
• Hirata: 11/30-12/4

Next meeting

• On 2020/11/27(Fri)