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Editor: RyutaroTakahashi
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Date: 2022/5/13 13:00- Date: 2022/5/13 13:00-13:30
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Participants: Participants: Takahashi, Sato, Ushiba, Aso, Ikeda, Akutsu, Miyoki, Hirata, Node, Kimura, Yano
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 * EX:
 * IY: Finalization. Health check. ADC noise.
 * EY: Finalization. Health check. ADC noise. BF LVDT noise. Cabling repair (P7-2).		  * EX: Preparation for the cooling of EXC.
 * IY: Finalization. Health check. ADC noise. Go to implementation of SI.
 * EY: Finalization. Health check. ADC noise. BF LVDT noise. Cabling repair (P7-2). Go to implementation of SI.
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 * Type-Bp: FC onto PRM. Traverser limit SW.  * Type-Bp: FC onto PRM (small regidual FC on AR). Traverser limit SW: Installation in PRM in the early next week. MSB: Installation in PRM in the late next week. FC onto PR3 on 5/23.
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Date: 2022/5/13 14:00- Date: 2022/5/13 14:00-14:40
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Participants: Participants: Takahashi, Ushiba, Fabian, Aso, Tanaka, Washimi
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 * Replaced the main card of the LVDT driver for the BF damper in EY.
 * Repaired the cabling for the thermometer in EY.
 * Closed four feedthrough flanges in EY and two ones in IY.
 * Replaced the HPCD for the IP in IY
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I kept working on the geophones calibration transfer functions. See slides.
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We applied FC to PRM.
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 * Measured the transfer functions of suspensions for OMMT1, OMMT2, and OSTM. Adjusted the position of H2 OSEMs for OMMT2/OSTM, and H4 OSEM for OMMT2. The baffle plates on the suspension frames were removed temporally, and they were returned back.
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 * Type-B/Bp/C:  * Type-B/Bp/C: Installation of traverse limit switches and MSB in PRM. Calibration of the geophones in SR2.

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Schedule
    2. Status
    3. Discussion
  3. VIS Meeting
    1. Summary Report
      1. Type-A
      2. Type-B
      3. Type-Bp
      4. Type-C
      5. Electronics
      6. Control
    2. Schedule
    3. Safety
    4. Discussion
    5. Travel Plans
    6. Next meeting

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2022/5/13 13:00-13:30

Participants: Takahashi, Sato, Ushiba, Aso, Ikeda, Akutsu, Miyoki, Hirata, Node, Kimura, Yano

Post O3 Upgrade portal

Schedule

  • IX:
  • EX: Preparation for the cooling of EXC.
  • IY: Finalization. Health check. ADC noise. Go to implementation of SI.
  • EY: Finalization. Health check. ADC noise. BF LVDT noise. Cabling repair (P7-2). Go to implementation of SI.
  • Type-B: Calibration of geophone in SR2. Stand-alone SM driver for SR3.
  • Type-Bp: FC onto PRM (small regidual FC on AR). Traverser limit SW: Installation in PRM in the early next week. MSB: Installation in PRM in the late next week. FC onto PR3 on 5/23.
  • Type-C: OMC installation from 5/23. Health check of OMMT1/2/OSTM.

Status

  • Replacement of flip cables: Replaced for TMS in EY.
  • TM height setting:
  • Oplev: Windshield in the next.
  • ACC:
  • Commissioning in air:
  • Commissioning in vacuum:
  • Acceptance check: Review from 5/13.
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers: How to treat thermal load?
  • Heater control: Pending.
  • TMS: Thermometer

  • Cryo-shield: Finnese measurement, height check --> Cooler ON.

Discussion

VIS Meeting

Date: 2022/5/13 14:00-14:40

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

Summary Report

Type-A

  • Replaced the main card of the LVDT driver for the BF damper in EY.
  • Repaired the cabling for the thermometer in EY.
  • Closed four feedthrough flanges in EY and two ones in IY.
  • Replaced the HPCD for the IP in IY

Type-B

I kept working on the geophones calibration transfer functions. See slides.

Type-Bp

We applied FC to PRM.

Type-C

  • Measured the transfer functions of suspensions for OMMT1, OMMT2, and OSTM. Adjusted the position of H2 OSEMs for OMMT2/OSTM, and H4 OSEM for OMMT2. The baffle plates on the suspension frames were removed temporally, and they were returned back.

Electronics

Control

Schedule

See Schedule

  • Type-A: Review of IY and EY.
  • Type-B/Bp/C: Installation of traverse limit switches and MSB in PRM. Calibration of the geophones in SR2.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 5/16

  • Takahashi: 5/17-20
  • Sato: 5/16-20
  • Hirata: 5/17-20

The week from 5/9

  • Takahashi: 5/9-13
  • Sato: 5/9-13
  • Hirata: 5/9-13

Next meeting

  • 2022/5/20(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220513 (last edited 2022-05-13 14:44:42 by RyutaroTakahashi)