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Date: 2022/9/30 13:00- Date: 2022/9/30 13:00-13:25
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Participants: Participants: Takahashi, Aso, Yokozawa, Ikeda, Mitsuhashi, Ushiba, Akutsu, Sato, Node
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 * Type-A: Offload of the BF GAS in IY. Replacement of the HPCD in EX.  * Type-A: Offload of the BF GAS in IY. Replacement of the HPCD in EX. Test of the Observation mode.
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 * Commissioning in vacuum:  * Commissioning in vacuum: Locking for a long time.
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 * Heater control: Pending.
 * TMS: Viewport in TMSY.
 * Heater control: Test in IY will be planned.
 * TMS: Implementation of the viewport in TMSY in the next week.
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Date: 2022/9/30 14:00- Date: 2022/9/30 14:00-14:20
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Participants: Participants: Takahashi, Washimi, Ushiba, Tanaka, Fabian, Aso
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 * Evaluated the accelerometers for the IPs. The performance is worse than the prediction.  * Evaluated the accelerometers for the IPs. The performance was worse than the prediction.
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 * We build a new windshield for the BS oplev.
 * In SR2, the seismometer on ground was calibrated with respect to the IP LVDTs and geophones.
 * In SR2, the sensor correction filter Terrence designed for SRM was copied to SRM filter banks for temporary usage.
 * In BS, a leak was found in an electrical feedthrough, we disconnected the cables to facilitate this work.
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 * Regulation to use the clean booth will be changed.

Agenda/Minutes

Zoom Meeting


CRY+VIS Interface Meeting

Date: 2022/9/30 13:00-13:25

Participants: Takahashi, Aso, Yokozawa, Ikeda, Mitsuhashi, Ushiba, Akutsu, Sato, Node

Post O3 Upgrade portal

Schedule

  • Type-A: Offload of the BF GAS in IY. Replacement of the HPCD in EX. Test of the Observation mode.
  • Type-B: Windshield in BS.
  • Type-Bp: Windshield in PR2/PR3. Monitoring of the PRM in the next week.
  • Type-C: Health check of the IMMT suspensions. Recovery of the OMMT1/2/OSTM suspensions. Final check of the OMMT/OSTM suspensions in the next week.

Status

  • Replacement of cables: EXT remains.
  • TM height setting:
  • Oplev: Windshields.
  • ACC: Evaluation.
  • Commissioning in vacuum: Locking for a long time.
  • Acceptance check: DropboxPaper

  • Vacuum system: Closing of the IMMT-IFI-PRM chambers. Leak check.
  • Heater control: Test in IY will be planned.
  • TMS: Implementation of the viewport in TMSY in the next week.

Discussion


VIS Meeting

Date: 2022/9/30 14:00-14:20

Participants: Takahashi, Washimi, Ushiba, Tanaka, Fabian, Aso

Summary Report

Type-A

  • Offloaded the BF GAS in IY.
  • Evaluated the accelerometers for the IPs. The performance was worse than the prediction.

Type-B

  • We build a new windshield for the BS oplev.
  • In SR2, the seismometer on ground was calibrated with respect to the IP LVDTs and geophones.
  • In SR2, the sensor correction filter Terrence designed for SRM was copied to SRM filter banks for temporary usage.
  • In BS, a leak was found in an electrical feedthrough, we disconnected the cables to facilitate this work.

Type-Bp

Type-C

  • Took photos of the EQ stoppers and the damping magnets in the IMMT suspensions.
  • Recovered the touching points in the OMMT/OSTM suspensions.

Electronics

Control

Schedule

  • Type-A:
  • Type-B:
  • Type-Bp: Monitoring of the PRM.
  • Type-C: Final check of the OMMT/OSTM suspensions.

Safety

  • Regulation to use the clean booth will be changed.

Discussion

Travel Plans

(Date in Kamioka)

The week from 10/3

  • Takahashi: 10/3-7
  • Hirata: 10/4-7
  • Aso: 10/3-6

The week from 10/10

  • Takahashi:
  • Sato:
  • Hirata:

Next meeting

  • 2022/10/7(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220930 (last edited 2022-09-30 14:24:53 by RyutaroTakahashi)