Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2021/7/16 13:00-13:35

Participants: Takahashi, Node, Ikeda, Ushiba, Tomaru, Sato, Aso, Kimura, Miyo

Post O3 Upgrade portal

Schedule

• IX: Still some cabling from payload have problems. To the finalization.
• EX: Aligned for the green beam again. To the finalization

• IY: F1 was recovered. Adjustable range of F0 was extended (Height range). Range of BF damper should be taken into account. The height adjustment was scheduled in the week of 7/26.

• EY: Mirror cleaning was almost finished. The shipping will be in the next week (transported after holidays).

Status

• Corrugate tube fixing jig: Replaced on 7/12-13.
• TM height setting: ITMY.
• Commissioning in air: on going in X-arm. Oplev calibration is necessary.
• Commissioning in vacuum:
• Overall commissioning:
• Acceptance check: Every Friday.
• PF actuator: After SC.
• Separation of rack in 2F: It was finished on 7/16.
• New vacuum pumps for V-chambers: Problem on the support for GVs.

Discussion

VIS Meeting

14:00-14:20

Participants: Takahashi, Miyo, Terrence, Sato, Fabian, Aso, Tanaka, Ishizaki

Klog

EX

• 17376 ETMX IM dewhitening filters and comb60 filters are implemented , takafumi.ushiba

• 17396 Oplev preparation at EXC , takaaki.yokozawa

• 17450 Oplev calibration EX TM oplev , takaaki.yokozawa

• 17496 ETMX IM photosensor trouble shooting , takafumi.ushiba

• 17503 Rebooter installation for pico motor drivers. (ETMX) , koji.nakagaki

• 17506 Replacement of fixing jigs for the corrugate tube , ryutaro.takahashi

• 17267 Oplev preparation work EX , takaaki.yokozawa

  • 17362 Comment , takaaki.yokozawa

• 17358 Injection of OpLev lasers to the cryostat at EXC , takafumi.ushiba

  • 17361 Comment , takaaki.yokozawa

EY

• 17457 dial gauge installation, Pico motor cable extension test , naohisa.satou

• 17485 Replacement of fixing jigs for the corrugate tube , ryutaro.takahashi

• 17485 Replacement of fixing jigs for the corrugate tube , ryutaro.takahashi

  • 17505 Comment , ryutaro.takahashi

General

• 17369 Added EPICS channel for VIS temperature adjustment , satoru.ikeda

• 17368 Implemented some Oplev-related fixes to the VIS model file. , satoru.ikeda

• 17388 Implementation of sensor to EULER matrix for IM photosensors , takafumi.ushiba

• 17455 TypeA,B,Bp VIS Guardian changed to SAFE , satoru.ikeda

• 17513 Safe.snap of MCi,e,o are updated after Miyoki-san closed laser shutter. , kouseki.miyo

• 17079 Organizing DAQ channels for VIS , satoru.ikeda

  • 17460 Comment , satoru.ikeda

IX

• 17400 Modification of damp_temp filter for MN DAMP filter of ITMX , takafumi.ushiba

• 17405 IX Pico motor driver was broken and replaced. , koji.nakagaki

• 17449 Oplev calibration IX TM oplevs , takaaki.yokozawa

• 17468 MNH1 actuator of ITMX seems to have an issue. , takafumi.ushiba

• 17482 Re-calibration of the IX TM length oplev , takaaki.yokozawa

• 17481 ITMX MNH1 cable repairement , takafumi.ushiba

• 17247 Rebooter installation for pico motor drivers. (ITMX) , koji.nakagaki

  • 17502 Comment , koji.nakagaki

  • 17522 Comment , koji.nakagaki

• 17335 Checked resistance of TF and BF LVDT actuators coil. , naohisa.satou

  • 17367 Comment , naohisa.satou

  • 17377 Comment , ryutaro.takahashi

• 17405 IX Pico motor driver was broken and replaced. , koji.nakagaki

  • 17420 Comment , satoru.ikeda

• 17449 Oplev calibration IX TM oplevs , takaaki.yokozawa

  • 17461 Comment , takafumi.ushiba

  • 17469 Comment , takafumi.ushiba

  • 17497 Comment , kouseki.miyo

• 17468 MNH1 actuator of ITMX seems to have an issue. , takafumi.ushiba

  • 17472 Comment , takafumi.ushiba

• 17481 ITMX MNH1 cable repairement , takafumi.ushiba

  • 17501 Comment , takafumi.ushiba

  • 17516 Comment , takafumi.ushiba

• 17482 Re-calibration of the IX TM length oplev , takaaki.yokozawa

  • 17488 Comment , takafumi.ushiba

• 8564 ITMX healthy check after pump down , lucia.trozzo

  • 17366 Comment , kouseki.miyo

IY

• 17406 Setup of pre-isolator , ryutaro.takahashi

• 17484 Replacement of fixing jigs for the corrugate tube , ryutaro.takahashi

• 17406 Setup of pre-isolator , ryutaro.takahashi

  • 17431 Comment , ryutaro.takahashi

  • 17441 Comment , ryutaro.takahashi

  • 17498 Comment , naohisa.satou

  • 17526 Comment , ryutaro.takahashi

MCE

• 17523 About the placement of the mini-rack in MCE , koji.nakagaki

PR2

• 17478 Rotate PR2 mirror by IM_YAW picomotor but we had better to use traverser , kouseki.miyo

• 17520 PR2 Traversor motor and PR2 IM PITCH drive Picomotor , satoru.ikeda

SR2

• 17434 Cable connection check , naoatsu.hirata

SR3

• 17439 Cable connection check , naoatsu.hirata

SRM

• 17314 Optical lever installation , fabian.arellano

  • 17372 Comment , fabian.arellano

  • 17499 Comment , terrence.tsang

This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py.

Summary Report

Type-A

• IY: Recovered the F1, F2 FRs. Compressed the F0 blades more to extend the height range. Total adjustable range became +/- 10.6mm.
• IX: Calibrated the BF damper. The LVDT driver was replaced to the low noise one.
• The corrugate tube fixing jigs were replaced in IY, EY, and EX.

Type-B

• This week we installed SR2 oplev hardware and routed the power cable from the rack to the SLED. Next week we'll align the optical components.
• On the week before the ast one, we installed the SRM oplev optics, aligned the optical components and calibrated the QPD in terms of their displacements.

• [Terrence] SRM optical lever was calibrated and diagonalized. But the noise floor is too high to render it useful for my purpose. klog 17499.

• I synthesized a sensor correction filter according to the seismometer noise and seismic noise in KAGRA. It resembles the LIGO filter but with lower noise amplification. (show notebook)
• About SRM.
  • I was given a month to work on the SRM and unfortunately I can't finish everything that I wish to do. Today is the deadline so I will stop working on it, unless I am given more time to work on it.
  • It would be useless if I don't share my knowledge with commissioners. But I know you are all busy and you might already have your own plan on how to configure the suspensions. I don't want to force people to listen to my stuff. But, just in case if people want to know how I do particular things, I will be very happy to share.

Type-Bp

Type-C

Electronics

• Power supply for IX and IY was changed.

Control

Schedule

See Schedule

• Type-A team: Finalization of IX and EX.
• Type-B team: Oplev alignment in SR2 and SRM.

Milestone

• IMC suspensions are ready in air [40] will finish 2021/04/21.

• PRs are ready in air [643] will finish 2021/07/09.

• ETMX is ready in air [656] will finish 2021/08/25.

• ITMX is ready in air [657] will finish 2021/08/31.

• ETMY is ready in air [658] will finish 2021/09/16.

• ITMY is ready in air [659] will finish 2021/11/08.

• BS is ready in air [691] will finish 2021/11/24.

• SRs are ready in air [663] will finish 2021/12/20.

• Output suspensions are ready in air [695] will finish 2021/12/21.

• TMSY is ready in air [708] will finish 2021/??/??.

• TMSX is ready in air [684] will finish 2021/??/??.

2021/03/29 updated

Safety

Discussion

BS Outer frame

• The brace (support beam) for BS outer frame was not attached in O3. The brace itself is ready.
• We have a structure analysis for the frame prototype (SR type), but not for the BS type.
• I like to ask Sato-san the analysis for BS type to confirm the availability.

Travel Plans

The week from 7/19

• Takahashi: 7/19-21
• Sato: 7/19-21
• Hirata: 7/19-21
• Yano: 7/19-21

The week from 7/26

• Takahashi: 7/26-30
• Hirata: 7/26-30
• Yano: 7/26-30

Next meeting

• 2021/7/30(FRI)