Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2022/7/8 13:00-13:30

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

Post O3 Upgrade portal

Schedule

IX: Offload of the F0. Adjustment of the OpLev for MN/PF.
EX: Adjustment of the OpLev for MN/PF.
IY:
EY: Leak test (Leak point was in the GV itself). Repair of the GV. Offload of the GAS filters.
Type-B: Replacement of the mirror in SRM.
Type-Bp: Adjustment of the OpLev in PR2/PR3. Investigation of the PR2 suspension. Health check in the next week.
Type-C: Health check of the IMMT1/2 in the next week.

Status

Replacement of cables: EXT and BF temp.
TM height setting:
Oplev:
ACC:
Commissioning in air:
Commissioning in vacuum: Keeping the X-arm. Health check in Y-arm.
Acceptance check:
New vacuum pumps: When should we implement the ion pumps? It is better to do before cooling.
Heater control: Pending.
TMS:

Discussion

VIS Meeting

Date: 2022/7/8 14:00-14:15

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

Summary Report

Type-A

Offloaded the GAS filters after the pump down in EY.
Replaced the cables for BF-FR, BF-TEMP, BF-GAS in EY.

Type-B

We replaced the small SRM mirror. The process went smoothly. I measured IM transfer functions yesterday, but I haven't compared with older measurements. Klog pending.
With Yokozawa-san, we checked whether the SRM and SR3 oplev beams were reaching the central regions of their respective mirrors. The beam in SR3 is a little lower than expected, but not by too much.

Type-Bp

Visual inspection of PRs. PR2 only has a small hexagon between the BF and the IM.

Type-C

Electronics

Control

Schedule

Type-A:
Type-B: Health check.
Type-Bp: Health check.
Type-C: Health check of IMMT1/2.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 7/11

Hirata: 7/12-15

The week from 7/18

Sato:
Hirata:

Next meeting

2022/7/15(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220708 (last edited 2022-07-08 14:21:52 by RyutaroTakahashi)

-  ⇤ ← Revision 2 as of 2022-07-07 20:17:31 → 
  Size: 1629
  Editor: RyutaroTakahashi
  Comment:
+   ← Revision 7 as of 2022-07-08 14:21:52 → ⇥
  Size: 2387
  Editor: RyutaroTakahashi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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-Date: 2022/7/8 13:00-
+Date: 2022/7/8 13:00-13:30
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-Participants:
+Participants: Takahashi, Uchiyama, Yokozawa, Ushiba, Kimura, Yasui, Aso, Hirata, Akutsu, Ikeda, Sato, Miyoki, Node
 Line 18:
- * EY: Leak test. Repair of the GV. Offload of the GAS filters.
+ * EY: Leak test (Leak point was in the GV itself). Repair of the GV. Offload of the GAS filters.
 Line 29:
- * Commissioning in vacuum:
+ * Commissioning in vacuum: Keeping the X-arm. Health check in Y-arm.
 Line 31:
- * PF actuator: At the in-vacuum commissioning.
 * New vacuum pumps for V-chambers: When should we implement the ion pumps? It is better to do before cooling.
+ * New vacuum pumps: When should we implement the ion pumps? It is better to do before cooling.
-Line 39:
+Line 38:
-Date: 2022/7/8 14:00-
+Date: 2022/7/8 14:00-14:15
-Line 41:
+Line 40:
-Participants:
+Participants: Takahashi, Uchiyama, Fabian, Tanaka, Aso, Ushiba, Washimi
-Line 45:
+Line 44:
+ * Offloaded the GAS filters after the pump down in EY.
 * Replaced the cables for BF-FR, BF-TEMP, BF-GAS in EY.
-Line 46:
+Line 48:
+ * We replaced the small SRM mirror. The process went smoothly. I measured IM transfer functions yesterday, but I haven't compared with older measurements. Klog pending.
 * With Yokozawa-san, we checked whether the SRM and SR3 oplev beams were reaching the central regions of their respective mirrors. The beam in SR3 is a little lower than expected, but not by too much.
-Line 47:
+Line 51:
+ * Visual inspection of PRs. PR2 only has a small hexagon between the BF and the IM.