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

* The next week

• Type-A team: 3/9 IXV filter setting, 3/10-11 IYV payload disconnection
• Type-B team: 3/9 EXV withdrawal, 3/10-12 PR/SR adjustment

* [Miyo] Please check the remaining tasks for PRs and SRs (hardware )

• PR3
  • rubbing check

  • Install OpLev

  • noise floor check about all sensors: OSEM, OpLev, LVDTs.

  • Calibration check
• PR2
  • noise floor check

  • Install OpLev

  • Calibration check
• PRM
  • replace the LVDT circuit for BF damper. it is broken.
  • noise floor check
  • calibration check
• BS
  • ballast mass adjustment
  • noise floor check
  • calibration check
• SR3
  • ballast mass adjustment
  • noise floor check
  • calibration check
• SR2
  • ballast mass adjustment

  • Install OpLev

  • noise floor check
  • calibration check
• SRM
  • ballast mass adjustment

  • Install OpLev

  • noise floor check
  • calibration check

klog

EX

• 16142 IP and F0 stepper motor limit switches. , fabian.arellano

• 16084 Remedy of F0 , ryutaro.takahashi

  • 16100 Comment , ryutaro.takahashi

  • 16116 Comment , fabian.arellano

  • 16128 Comment , fabian.arellano

  • 16139 Comment , fabian.arellano

• 16142 IP and F0 stepper motor limit switches. , fabian.arellano

  • 16159 Comment , fabian.arellano

General

• 16144 I turned off the electronics in VIS racks in the central room. , fabian.arellano

• 16036 Cabling for temperature control equipment , satoru.ikeda

  • 16114 Comment , satoru.ikeda

IX

• 16118 Setup of filter chain , ryutaro.takahashi

  • 16127 Comment , ryutaro.takahashi

  • 16138 Comment , ryutaro.takahashi

  • 16156 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

MCF

• 16157 Investigation of IMC suspensions , ryutaro.takahashi

PR3

• 15976 Picomotor of PR3_BF_T(Motor2) got stuck , satoru.ikeda

  • 16162 Comment , fabian.arellano

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)