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  * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16139|16139]] Comment , __fabian.arellano__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16139|16139]] Comment ,  __fabian.arellano__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16138|16138]] Comment ,  __ryutaro.takahashi__

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Schedule
    2. Status
    3. Discussion
  3. VIS Meeting
    1. Schedule
    2. klog
    3. Progress report
      1. TypeA
      2. TypeB
      3. TypeBp
      4. TypeC
      5. Electronics
      6. Control
    4. Safety
    5. Discussion
    6. Travel Plans
    7. Next meeting

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date : 13:30-

Participants :

Post O3 Upgrade portal

Schedule

  • IX: Oplev setting will be finished by 3/10. Mystery of 5-kg overload. The ballast on the F0 is too tall.
  • IY: The vent was finished on 3/2. Disconnection is scheduled on 3/11.
  • EX: Connection is scheduled in the week of 3/15.

Status

  • Corrugate tube fixing jig: Re-measurement was performed in 2/25-3/2 at IYV.
  • Commissioning in air: Commissioning of ITMX is delay. From April?
  • Commissioning in vacuum: From May?
  • Acceptance check: Cryo-payload in IX/EX and Type-A tower in EY/IX are on going.
  • PF actuator: Not evaluated in IX, but after the commissioning for suspension.
  • Jig for FC painting:
  • Overall commissioning: Schedule meeting is requested (after JPS meeting?).

Discussion

  • [Miyo] オフロード作業を無くすためのアイデア募集
    • 問題意識：真空圧力が変わるとIPが傾いてPayloadが自身のEQフレームに当たる。（完全に傾かないようにする治具はそもそも不可能なので、傾いても大丈夫なアイデアがほしい。）

    • [Miyo] そもそも、IPが傾いてIPのEQストップに当たった状態でもPayloadも同じく当たらないよう十分に退避させれば良い話に思える。その場合、IPがEQに当たった状態でFRをつかってもとに戻せるかどうか確認すべき。これはAcceptanceCheckに追加すべきか？

VIS Meeting

14:00-

Participants:

Schedule

Schedule

klog

EX

  • 16084 Remedy of F0 , ryutaro.takahashi

    • 16100 Comment , ryutaro.takahashi

    • 16116 Comment , fabian.arellano

    • 16128 Comment , fabian.arellano

    • 16139 Comment , fabian.arellano

General

  • 16036 Cabling for temperature control equipment , satoru.ikeda

    • 16114 Comment , satoru.ikeda

IX

  • 16118 Setup of filter chain , ryutaro.takahashi

  • 16118 Setup of filter chain , ryutaro.takahashi

  • 16127 Comment , ryutaro.takahashi

  • 16138 Comment , ryutaro.takahashi

IY

  • 16091 Monitoring of IP by ITMY venting , satoru.ikeda

    • 16106 Comment , satoru.ikeda

    • 16107 Comment , kouseki.miyo

    • 16115 Comment , satoru.ikeda

    • 16119 Comment , satoru.ikeda

MCE

  • 16101 Preparation for fixing the MCe coil cable , naohisa.satou

Progress report

TypeA

  • Replacement of LVDT coils for F0 was finished in EX.
  • Tuning of the filter chain is on going in IX.

TypeB

TypeBp

TypeC

  • Investigation and recovery of the IMC suspensions were performed on 3/4.

Electronics

Control

Safety

Discussion

Travel Plans

The week from 3/8

  • Takahashi: 3/8-3/12
  • Sato: 3/8-3/12
  • Hirata: 3/8-3/12
  • Yano: 3/8-3/12

The week from 3/15

  • Takahashi: 3/15-18
  • Sato: 3/15-19
  • Hirata: 3/15-19
  • Yano: 3/15-19

Next meeting

  • 2021/3/12(FRI)

KAGRA/Subgroups/VIS/VISMinutes20210305 (last edited 2021-03-05 16:43:25 by RyutaroTakahashi)