Differences between revisions 5 and 6
⇤ ← Revision 5 as of 2022-07-15 13:52:23 →
Size: 2515
Editor: fabian.arellano
Comment:
← Revision 6 as of 2022-07-15 14:43:09 → ⇥
Size: 2621
Editor: RyutaroTakahashi
Comment:
Deletions are marked like this. Additions are marked like this.
Line 38: Line 38:
Date: 2022/7/15 14:00- Date: 2022/7/15 14:00-14:30
Line 40: Line 40:
Participants: Participants: Takahashi, Uchiyama, Fabian, Tanaka, Ushiba, Washimi
Line 64: Line 64:
 * Type-Bp:
 * Type-C: 		 * Type-Bp: Calibration of SF in PR2.
 * Type-C: Health check of IMMT1/2.

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: 2022/7/15 13:00-13:40

Participants: Takahashi, Kimura, Akutsu, Yokozawa, Uchiyama, Yasui, Sato, Ushiba, Miyoki, Aso, Hirata

Post O3 Upgrade portal

Schedule

  • IX: Offload of GAS filters.
  • EX: Performance check at 80K.
  • IY: Health check and recovery.
  • EY: Health check and recovery. Installation of the MNV oplev.
  • Type-B: Health check.
  • Type-Bp: Investigation of the previous data on PR2. Calibration factor of BFH in PRM.
  • Type-C: Health check of the IMMT1/2.

Status

  • Replacement of cables: EXT and BF temp.
  • TM height setting:
  • Oplev: Investigation of the glitches.
  • ACC:
  • Commissioning in air:
  • Commissioning in vacuum: Try to see DRAM signals.
  • Acceptance check: Type-Bp.
  • New vacuum pumps: Installation of the ion pumps in IX/IY is scheduled on 8/4,5.
  • Heater control: Pending.
  • TMS:

Discussion

VIS Meeting

Date: 2022/7/15 14:00-14:30

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

Summary Report

Type-A

  • Health check. Recovered the F2 in IY and the F1 in EY.
  • Offloaded the GAS filters in IX.

Type-B

  • Ushiba-san plotted most of Type-B transfer functions in a way suitable for comparison. After remeasurig a few of them, I have the impression that the suspensions are healthy, although it seems there's still an unknown: in BS IM-R and IM-P see to have additional peaks in in SRs. I need to check in more detail.
  • We measured TFs at the individual coils and plotted them in a suitable way for comparison. I should double-check, but a cursory comparison suggessts they are all fine. No klog yet.
  • We checked the polarities of all the coil-magnet actuators in the four suspensions and everything seems consistent with what we know. No klog yet.

Type-Bp

* On request from Takahashi-san: the oldest PR2 TF measurements I was able to find were from 26th of July 2019.

Type-C

Electronics

Control

Schedule

  • Type-A:
  • Type-B: Health check.
  • Type-Bp: Calibration of SF in PR2.
  • Type-C: Health check of IMMT1/2.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 7/19

  • Sato: 7/19-22
  • Hirata: 7/19-22

The week from 7/25

  • Takahashi:
  • Sato: 7/26-29
  • Hirata: 7/26-29

Next meeting

  • 2022/7/22(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220715 (last edited 2022-07-15 14:43:09 by RyutaroTakahashi)