Agenda/Minutes of the VIS Meeting on 2020/8/28

2020/8/28 14:00 -

Zoom Meeting

Participants:

Progress report

General

Type-A

Type-B

• Cable preparation for yaw stepper motor [Sato]
  • The five cables requested will be ordered in early October. However, would you consider the following alternatives.

    • For four (50 cm , kapton, M-Dsub<>bundy plug) cables. We have six unused cables of different lengths with similar specifications.(JGW-D1503901/24)

    • For (2.5m, F-Dsub<>F-Dsub) cable. We have Type2-2m(Dsub F-F, kapton) and Type4-1m(Dsub F-M, kapton). Two cables can be connected and extended.

Type-Bp

Type-C

• A concrete design proposal for IMMT2 modificaion has been uploaded. (JGW-D2011918)

Controls

Electronics

Towards O4

• KAGRA is in "RSE Trial" now.
• Procedure documents.

  • Type-A tower installation

  • Limit switches, <-- revised

  • Replacement of TF blades (Draft)

  • Wire gluing in PR3

  • Type-B remedying work

• Acceptance Test (Wiki page).

• Schedule towards O4 was revised (Chart).

cf. Post Obs. task (Request), Task for O3c (Plan, Sheet), Task towards O4 (List)

Safety

Discussion

• [Terrence] New features for the suspensions, type-A and type-B, as pre-O4 upgrades (II).

• [Ishizaki] GAS filter improvement for post O4.slide.pdf

Travel Plans

Next meeting

• On 2020/9/4(Fri)