Contents
Agenda/Minutes
CRY+VIS Interface Meeting
Date : 13:30-14:00
Participants : Takahashi, Miyo, Kimura, Ushiba, Ikeda, Aso, Hirata, Sato, Tomaru
Schedule
- IX: Oplev setting will be carried out in April. Help of M.Takahashi-san will be necessary.
- IY:
- EX: Cryo-payload was installed. Release will be postponed.
- EY: Installation of the F1 stage was started. Countermeasure for the contamination was scheduled on 4/5-6.
Status
- Corrugate tube fixing jig: They will be prepared by the end of May.
- Commissioning in air: From mid. May for IX.
- Commissioning in vacuum:
- Acceptance check: Check items for in-air commissioning should be confirmed on the payload. Review of each stage in Type-A tower is necessary.
- PF actuator: Not evaluated in IX, but after the commissioning for suspension.
- Jig for FC painting:
- Overall commissioning: Schedule meeting on 3/22.
- Procedure of TM height setting:
Discussion
VIS Meeting
14:00-14:40
Participants: Takahashi,Fabian, hirata, miyo, sato, Terrence, Aso, Tanaka
Schedule
* The next week
- Type-A team: 3/22-26 installation in EY. 3/23 F0 tuning in EX.
- Type-B team: 3/22-26 Remedy in PR3.
Klog
EX
16260 Connection of cryo-payload , ryutaro.takahashi
EY
General
16234 Common Type-C(MCI,MCE,MCO,IMMT1,IMMT2) model. , satoru.ikeda
16252 Common Type-C(OMMT1,OMMT2,OSTM) model. , satoru.ikeda
IX
IY
16249 Connection of release sensors to DGS , ryutaro.takahashi
16091 Monitoring of IP by ITMY venting , satoru.ikeda
16248 Comment , satoru.ikeda
16249 Connection of release sensors to DGS , ryutaro.takahashi
16251 Comment , naohisa.satou
MCF
16242 MCi and MCo oplev TX replacing , tomotada.akutsu
16279 IMC oplev characterization and MCe oplev TX replacing , tomotada.akutsu
16157 Investigation of IMC suspensions , ryutaro.takahashi
16286 Comment , kouseki.miyo
PR3
16258 Setting the alignment of PR3. , fabian.arellano
- 16287 Comparison of PR3 and SR3 wire clamps. , fabian.arellano
16239 Test of PR3 mirror pitch stability using the Donald Trump method. , fabian.arellano
16272 Tightening of the wire clamp screws. , fabian.arellano
16277 Comment , fabian.arellano
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Summary Report
TypeA
- Connected the cryo-payload to the BF in EX. The load for BF was roughly adjusted. The F1, F3, BF are working. The F0 overloads by 13kg.
- Started the setup of F1 in EY.
TypeB
TypeBp
PR3
Given the fact that the gluing of the wire underneath the mirror didn't fix the problem of the stability of the mirror, we decided to tighten the wire clamps.
- We locked the payload.
- Removed H1 and H2 OSEM flsags with long and narrow pliers.
- Removed the side panels.
- Tighetened the screws of the weight-holding wires to 10 Nm
- Tighetened the screws of the RM locating wire screws to 2 Nm. They rotated beytween 45 degrees and 95 degrees. (The screw heads for the mirror wires are not accesible).
- After reassembly we tested pitch stabiliry with the Trupm procedure.
- The mirror pitch changed by -5.8 mrad (oplev).
- The IM pitch changed by 1. 04 mrad (V2 and V3 OSEMs).
- Given this result we want to apply adhesive to the wires at the bottom of the clamps: see slides.
TypeC
Electronics
Control
Safety
Discussion
Travel Plans
The week from 3/22
- Takahashi: 3/22-3/26
- Sato: 3/22-3/26
- Hirata: 3/22-3/26
- Yano: 3/22-3/26
The week from 3/29
- Takahashi: 3/29-4/2
- Sato: 3/29-4/2
- Hirata: 3/29-4/2
- Yano: 3/29-4/2
Next meeting
- 2021/3/26(FRI)