Agenda/Minutes on 2020/12/4

Zoom Meeting

CRY+VIS Interface Meeting

13:30-

Participants:

Post O3 Upgrade portal

• Schedule: Upgrade work in IXV (2/22-3/10) will be swapped with the work in EXV (1/4-1/22). The connection of ITMX is available on 1/12.
• Jig for the FC painting.

• Acceptance check items (Inspection document).

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

VIS Meeting

14:00-

Participants:

Progress report

General

[Miyo]

Type-A

Type-B

Type-Bp

Type-C

• Set up the old OSTM suspension in the OMC both.

• [Miyo] We (mainly Ikeda-san) made Type-C guardian. Now we can use ALIGN state. In this state, we only engage the APTICALIGN with ramp time not engage the OpLev DC control according to Nakano-san's advices. klog#15578

Controls

[Miyo]

Electronics

• Tested the modified LVDT card. This modification (#14 pin grounded) will be applied to 16 cards.

Towards O4

• Type-B remedy work is on going.
• Type-A team will start modification of ACCs.
• Schedule.

  • Upgrade work in IXV (2/22-3/10) will be swapped with the work in EXV (1/4-1/22). (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

• Mechanical resonances of SRM.

Travel Plans

The week from 12/7

• Takahashi: 12/7-11
• Hirata: 12/7-11
• Yano: 12/7-11

The week from 12/14

• Takahashi: 12/14-18
• Hirata: 12/14-18
• Yano: 12/14-18

(F2F Meeting in 12/17-18)

Next meeting

• On 2020/12/11(Fri)