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⇤ ← Revision 2 as of 2023-08-18 10:46:11 →
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← Revision 3 as of 2023-08-18 13:47:22 → ⇥
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Editor: RyutaroTakahashi
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Date: 2023/8/18 13:00- Date: 2023/8/18 13:00-13:38
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Participants: Participants: Takahashi, Yokozawa, Uchiyama, Akutsu, Ushiba, Aso
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 * Type-A: Investigation of the ITMY oscillation. Height adjustment in IX, IY, and EY on 8/7. Update of the local control. Test of the IP control with ACC in IY.  * Type-A: Investigation of the ITMY oscillation. Height adjustment in IX, IY, and EY on 8/7,18. Update of the local control (V3 PD in EY is not fine). Test of the IP control with ACC in IY.
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 * Vacuum system: ISP trouble.  * Vacuum system: ISP trouble. ISPs were switched to TMPs in Y-arm. The temperature of the duct shield in EX increased. Turned on TMPs around EX.
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 * Temperature control for the Oplev: Installed the heater controller to IYC.  * Temperature control for the Oplev: Installed the heater controller to IYC. EXC should be checked again. Prepare for IXC and EYC.
 * TM cooling.
 * IM heater.
 * Summary of cooling.

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Suspensions
    2. Other items
    3. Post O4a
    4. Discussion
  3. VIS Meeting
    1. Summary Report
      1. Type-A
      2. Type-B
      3. Type-Bp
      4. Type-C
      5. Electronics
      6. Control
      7. R&D
    2. Schedule
    3. Toward O5
    4. Discussion
    5. Next meeting

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2023/8/18 13:00-13:38

Participants: Takahashi, Yokozawa, Uchiyama, Akutsu, Ushiba, Aso

Acceptance check document

Suspensions

  • Type-A: Investigation of the ITMY oscillation. Height adjustment in IX, IY, and EY on 8/7,18. Update of the local control (V3 PD in EY is not fine). Test of the IP control with ACC in IY.
  • Type-B: Measurement of the DAC noise in SRM. Measurement on the sensor correction in SR2.
  • Type-Bp: Measurement for the optimization of damping control in PR2.
  • Type-C: Health check of the IMMT2 suspension.

Other items

  • Oplev: Investigation of the MNV Oplev in EY.
  • ACC: Test of the IP control with ACCs in IY.
  • Commissioning:
  • Vacuum system: ISP trouble. ISPs were switched to TMPs in Y-arm. The temperature of the duct shield in EX increased. Turned on TMPs around EX.
  • Heater control:
  • TMS:

Post O4a

  • Measurements of the DAC noise: Type-C.
  • Measurements on the sensor correction in SR2: Performed on 8/15.
  • Optimization of the damping control in PRs: Measurements 2 days, Test 3 days.
  • IP control with the ACCs: One more test is necessary.
  • In-vacuum accelerometer for IOO: Leak test of the pod is planed in early September.

  • Hight adjustments of Type-A in the cooling: The procedure.

  • Temperature control for the Oplev: Installed the heater controller to IYC. EXC should be checked again. Prepare for IXC and EYC.
  • TM cooling.
  • IM heater.
  • Summary of cooling.

Discussion

VIS Meeting

Date: 2023/8/18 10:0010:45

Participants: Takahashi, Mitsuhashi, Shibai, Ushiba, Tanaka

Summary Report

Type-A

  • Height adjustment in IX, IY, and EY on 8/7.
  • Test of the IP control with ACC in IY.

Type-B

  • Measurement on the sensor correction in SR2.

Type-Bp

  • Measurement for the optimization of damping control in PR2.

Type-C

  • Health check of the IMMT2 suspension.
  • Damping of the OMC suspension.
    • Prototype test of the blade damper.
    • Design of the flexible pendulum damper.

Electronics

Control

R&D

  • TAMA-SAS experiment: IP control.

Schedule

  • TAMA-SAS experiment.
  • Test of the OMC damper.

Toward O5

Discussion

Next meeting

  • 2023/9/1 10:00-

KAGRA/Subgroups/VIS/VISMinutes20230818 (last edited 2023-08-18 13:48:40 by RyutaroTakahashi)