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 * Schedule for IX: Connection of ITMX is scheduled in the week of 2/8.  * Schedule for IX: Connection of ITMX was scheduled on 2/9.
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 * Jig for FC painting:
 * PF actuator:
 * Jig for FC painting: Under manufacturing.
 * PF actuator: by the end of January.

Agenda/Minutes on 2021/1/8

Zoom Meeting

CRY+VIS Interface Meeting

13:30-13:55

Participants: Takahashi, Hirata, Sato, Yano, Aso, Miyo, Ushiba, Tomaru, Ikeda, Kimura, Hagiwara

Post O3 Upgrade portal

  • Schedule for IX: Connection of ITMX was scheduled on 2/9.
  • Schedule for IY: Cooling of payload is scheduled from 1/12.
  • Corrugate tube fixing jig: Re-measurement in IYV is planed.
  • Commissioning in vacuum:
  • Acceptance check items:
  • Jig for FC painting: Under manufacturing.
  • PF actuator: by the end of January.

VIS Meeting

14:00-15:00

Participants: Takahashi, Tanaka, Fabian, Sato, Hirata, Aso, Miyo, Washimi

Progress report

General

Type-A

  • Remedy work in IXV.
    • Replaced three blades for TF.
    • Mounted the ballast weight on the top plate of TF keystone.
    • Assembled and tested the limit switches for the yaw and vertical FR.
    • Assembled the geophones into the pods.

Type-B

Type-B

Albums

Week of the 4th of January

SR3

  • In order to answer the question whether we should move the assembly frame next to SR3 as a back up plan,
    • We opened SRM chamber -X door, next to where the frame is now and
    • We measured the width of the clear space: 66 cm, which is enough.
    • We should ask Mirapro to move the frame, but
    • We need to move the rack with electronics and the cables and we need to allocate time to do it.
  • The IP stepper motor shaft pitch was measured to be 1.0 mm/thread.

BS

  • The IP stepper motor shaft pitch was measured to be 0.8 mm/thread.
  • We received special screws, we installed the IP LVDTs and calibrated them: I have not checked the data but we might need to optimize the LVDT cards and repeat the calibration. I need to think about this issue more carefully.
  • Before removing IP immobilizing jig we measured the output of the LVDTs in order to recover the aligned position.
  • We replaced the heavy F0 top plate of the keystone assembly by a lighter one with ballast mass.
  • We installed the F0 yaw stepper motor with limit switches. Test pending.
  • We installed the F0 fishing rod limit switches. Test pending.

Type-B all

We checked the flanges we could use for the cables of a thermistor. See details in klog 15700.

Type-Bp

Type-C

Controls

Electronics

Towards O4

Safety

Discussion

Travel Plans

The week from 1/11

  • Takahashi: ?
  • Sato: ?
  • Hirata: ?
  • Yano: ?

Next meeting

  • On 2020/1/15(Fri)

KAGRA/Subgroups/VIS/VISMinutes20210108 (last edited 2021-01-11 15:24:21 by RyutaroTakahashi)