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Date: 2021/11/19 13:00- Date: 2021/11/19 13:00-13:40
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Participants: Participants: Takahashi, Ikeda, Hirata, Sato, Uchiyama, Tomaru, Ushiba, Sugiyama, Aso, Kimura
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 * IX: GRX.
 * EX: GRX. F0 FR. GAS LVDT coefficients.
 * IY: BF LVDT calibration.
 * EY: Replacement of flip cables. Preparation for ACCs.		  * IX: GRX. The cavity was locked.
 * EX: GRX. F0 FR was recovered. GAS LVDT coefficients were confirmed.
 * IY: BF LVDT was calibrated again.
 * EY: GRY. Replacement of flip cables. Preparation for ACCs.
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 * Replacement of Flip cable: IY on 11/17.  * Replacement of Flip cable: EY on 11/17. EX on 11/25. IX on 11/26.
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 * Oplev: Setup of the TM Oplev in IY after the height adjustment.
 * ACC: Installation to EX is scheduled on 11/24-25. Assembly for EY is on going. Actuator coil of H1 ACC was replaced		  * Oplev: Setup of the TM Oplev in IY after the TM alignment.
 * ACC: Installation to EX is scheduled on 11/24-25. Assembly for EY is ongoing. Actuator coil of H1 ACC for IY was replaced
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 * Commissioning in vacuum:  * Commissioning in vacuum: Chamber closing was scheduled from 12/13.
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 * Heater control: 
 * Power source for Oplev: 		 * Heater control:
 * Power source for Oplev: EX was finished. The next target is IX.
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Date: 2021/11/19 14:00- Date: 2021/11/19 14:00-14:30
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Participants: Participants: Takahashi, Hirata, Sato, Ushiba, Fabian, Terrence, Tanaka, Sugiyama, Aso, Uchiyama, Miyoki
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 * Recovered the F0 FR stuck in EX.
 * Confirmed the LVDT coefficients of GAS filters (BF, F3, F1) in EX.
 * Recalibrated the BF LVDT in IY.
 * Started the assembly of accelerometers in EY.
 * Replaced the flip cables.
 * Replaced the coil drivers for BFV from LPCD to HPCD in IY and EY.
 * Transported the accelerometers to EX.
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 * SR3
  * On Tuesday we checked an aparent problem we detected after installing the cable flip adapters: we were not able to measure the resistance of TM-H2 coil. We realized a gender bender was used inside of the chamber, with the effect of flipping the pins. We just connected the cable without the flip adapter using a non-flipping fake gender bender.
  * We detected that a pin of the F1 FR cable had a connection to the chamber (GND). This is likely the reason the FR is not working. It seems it would work using an stand-alone driver (not in klog yet).
  * On Friday we realigned the oplev according to the requirements of the green beam alignment.
 * BS
  * We replaced the original LVDT card for the three GAS filters as preparation for testing the converter from double-ended to single-ended output for the reference signal.
  * The new board had additional connections to improve the noise performance.
  * We measured the resistances in the old board and "copied" them onto the new board.
  * Then I adjusted the calibration factors and offsets in the medm screens using the old transfer functions as references.
  * This approach seemed to be successful for the BF but not for F0. We should calibrate F0 sometime next week.
  * We tested the converter from double-ended to single-ended output for the reference signal.
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 * Type-B team:  * Type-B team: Measurement of BS box, WAB, Calibration of SF.
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 * Hirata: 11/29-12/3  * Hirata: 11/30-12/3

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: 2021/11/19 13:00-13:40

Participants: Takahashi, Ikeda, Hirata, Sato, Uchiyama, Tomaru, Ushiba, Sugiyama, Aso, Kimura

Post O3 Upgrade portal

Schedule

  • IX: GRX. The cavity was locked.
  • EX: GRX. F0 FR was recovered. GAS LVDT coefficients were confirmed.
  • IY: BF LVDT was calibrated again.
  • EY: GRY. Replacement of flip cables. Preparation for ACCs.

Status

  • Replacement of Flip cable: EY on 11/17. EX on 11/25. IX on 11/26.
  • TM height setting: ITMY.
  • Oplev: Setup of the TM Oplev in IY after the TM alignment.
  • ACC: Installation to EX is scheduled on 11/24-25. Assembly for EY is ongoing. Actuator coil of H1 ACC for IY was replaced
  • Commissioning in air: GRX.
  • Commissioning in vacuum: Chamber closing was scheduled from 12/13.
  • Overall commissioning:
  • Acceptance check:
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers: 11/24-25 in IXV.
  • Heater control:
  • Power source for Oplev: EX was finished. The next target is IX.

Discussion

VIS Meeting

Date: 2021/11/19 14:00-14:30

Participants: Takahashi, Hirata, Sato, Ushiba, Fabian, Terrence, Tanaka, Sugiyama, Aso, Uchiyama, Miyoki

Summary Report

Type-A

  • Recovered the F0 FR stuck in EX.
  • Confirmed the LVDT coefficients of GAS filters (BF, F3, F1) in EX.
  • Recalibrated the BF LVDT in IY.
  • Started the assembly of accelerometers in EY.
  • Replaced the flip cables.
  • Replaced the coil drivers for BFV from LPCD to HPCD in IY and EY.
  • Transported the accelerometers to EX.

Type-B

  • SR3
    • On Tuesday we checked an aparent problem we detected after installing the cable flip adapters: we were not able to measure the resistance of TM-H2 coil. We realized a gender bender was used inside of the chamber, with the effect of flipping the pins. We just connected the cable without the flip adapter using a non-flipping fake gender bender.
    • We detected that a pin of the F1 FR cable had a connection to the chamber (GND). This is likely the reason the FR is not working. It seems it would work using an stand-alone driver (not in klog yet).
    • On Friday we realigned the oplev according to the requirements of the green beam alignment.
  • BS
    • We replaced the original LVDT card for the three GAS filters as preparation for testing the converter from double-ended to single-ended output for the reference signal.
    • The new board had additional connections to improve the noise performance.
    • We measured the resistances in the old board and "copied" them onto the new board.
    • Then I adjusted the calibration factors and offsets in the medm screens using the old transfer functions as references.
    • This approach seemed to be successful for the BF but not for F0. We should calibrate F0 sometime next week.
    • We tested the converter from double-ended to single-ended output for the reference signal.

Type-Bp

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A team: Installtion of ACCs to EX.
  • Type-B team: Measurement of BS box, WAB, Calibration of SF.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 11/22

  • Takahashi: 11/24-26
  • Sato: 11/24-26
  • Hirata: 11/24-26

The week from 11/29

  • Takahashi: 11/29-12/3
  • Sato: 11/29-12/3
  • Hirata: 11/30-12/3

Next meeting

  • 2021/11/26(FRI)

KAGRA/Subgroups/VIS/VISMinutes20211119 (last edited 2021-11-19 16:09:22 by RyutaroTakahashi)