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Participants:  Participants:
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 * SR2 mid-size baffles: Hirata-san and Yano-san successfully did a trial installation, including the balancing of the suspended lower breadboard.
 * SR3 oplev:
  * I recovered suspension and oplev alignment: all stages were set close to their setpoints and the beam went through the center of the lens.
  * I set the lens in the optimum position with respect to the lens using a quantitative method.
  * I calibrated the QPD output in terms of displacement.
 * SR3 control: Terrence is working on it. Rough plan and schedule [[https://docs.google.com/document/d/1AOe0awHAD3Gz2T8EhAVgpbi_LX2mqHE2qWEEPv2PSyE/edit?usp=sharing | here]]
  * Calibration factors and sensing matrices of the optical lever were implemented.
  * I haven't diagonalize the oplev, but sanity checks show very little cross-couplings. Might do diagonalization today or tomorrow.
  * I measured all transfer functions and will do modeling soon.
  * After that I will construct all control filters for SR3.
Line 45: Line 56:
In PR2, After a lot of preparation, they installed the mid-size baffles. The green laser passes through without problems.
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Line 73: Line 85:

Contents

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

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2021/8/13 13:00-

Participants:

Post O3 Upgrade portal

Schedule

  • IX: In finalization. Installation of the ACCs is scheduled on 8/16-17.
  • EX: In finalization.
  • IY: Height adjustment will be scheduled after vacation.
  • EY: Preparation for the payload with the mirror is on going. Installation into the cryostat is scheduled on 8/20. Chamber closing is scheduled on 9/6.

Status

  • External review: on 8/19.
  • TM height setting: ITMY.
  • Commissioning in air: on going in X-arm. Oplev calibration on 8/9-11.
  • Commissioning in vacuum:
  • Overall commissioning:
  • Acceptance check: Every Friday.
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers:

Discussion

VIS Meeting

14:00-

Participants:

Klog

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

Summary Report

Type-A

Type-B

  • SR2 mid-size baffles: Hirata-san and Yano-san successfully did a trial installation, including the balancing of the suspended lower breadboard.
  • SR3 oplev:
    • I recovered suspension and oplev alignment: all stages were set close to their setpoints and the beam went through the center of the lens.
    • I set the lens in the optimum position with respect to the lens using a quantitative method.
    • I calibrated the QPD output in terms of displacement.

  • SR3 control: Terrence is working on it. Rough plan and schedule here

    • Calibration factors and sensing matrices of the optical lever were implemented.
    • I haven't diagonalize the oplev, but sanity checks show very little cross-couplings. Might do diagonalization today or tomorrow.
    • I measured all transfer functions and will do modeling soon.
    • After that I will construct all control filters for SR3.

Type-Bp

In PR2, After a lot of preparation, they installed the mid-size baffles. The green laser passes through without problems.

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A team: ACC installation in IX, Connection of cryo-payload in EY
  • Type-B team:

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

Travel Plans

The week from 8/16

  • Takahashi: 8/16-20
  • Sato: 8/16-20

The week from 8/23

  • Takahashi: 8/23-25

Next meeting

  • 2021/8/20(FRI)

KAGRA/Subgroups/VIS/VISMinutes20210813 (last edited 2021-08-13 14:21:56 by RyutaroTakahashi)