VIS Meeting

Date: 2025/1/17 10:00-10:40

Zoom

Participants: Sato, Tanaka, Ushiba, Yokozawa, Washimi, Takahashi

Topics

Type-A

Height adjustment during the cooling.
- Final adjustment was performed on Jan. 17th.
ACCs for the IP controls.
- Preparing for the stand-alone test bench with DGS in Mitaka.　Ikeda-san has set the DGS up in the ATC lab.

Type-B/Bp

Enclosure for the SG card into an independent box.
- Asking Tanaka-san. The card has a regulator to convert +/-18V to +/-15V.
Yaw damper for Type-B.
- One set should be tested in SRM around autumn 2025.
IP for Type-Bp.

Type-C

Active isolation table for OMC.
- Sato-san is checking the fitting condition of the TMS isolator to the OMC chamber (update). The structural mode also should be checked.
Vibration in the IFI chamber
- Measurement of STM using the laser sensor (location, clamping). The work opening the IFI chamber is planned for mid-Feb.
Small Type-C suspensions with mini-GAS.

R&D

Discussion

Next meeting

2025/1/31 10:00-

KAGRA/Subgroups/VIS/VISMinutes20250117 (last edited 2025-01-17 10:48:35 by RyutaroTakahashi)

-  ⇤ ← Revision 2 as of 2025-01-16 10:20:03 → 
  Size: 943
  Editor: RyutaroTakahashi
  Comment:
+   ← Revision 6 as of 2025-01-17 10:48:35 → ⇥
  Size: 1375
  Editor: RyutaroTakahashi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 5:
-Date: 2025/1/17 10:00-
+Date: 2025/1/17 10:00-10:40
 Line 9:
-Participants:
+Participants: Sato, Tanaka, Ushiba, Yokozawa, Washimi, Takahashi
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+  * Final adjustment was performed on Jan. 17th.
-Line 15:
+Line 16:
-  * Preparing for the stand-alone test bench with DGS in Mitaka.
+  * Preparing for the stand-alone test bench with DGS in Mitaka. Ikeda-san has set the DGS up in the ATC lab.
-Line 19:
+Line 20:
+  * Asking Tanaka-san. The card has a regulator to convert +/-18V to +/-15V.
-Line 20:
+Line 22:
+  * One set should be tested in SRM around autumn 2025.
-Line 24:
+Line 27:
-  * Sato-san is checking the fitting condition of the TMS isolator to the OMC chamber ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16431|update]]).
+  * Sato-san is checking the fitting condition of the TMS isolator to the OMC chamber ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16431|update]]). The structural mode also should be checked.
-Line 26:
+Line 29:
-  * Measurement of STM using the laser sensor ([[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32280|location]], [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32293|clamping]]).
+  * Measurement of STM using the laser sensor ([[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32280|location]], [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32293|clamping]]). The work opening the IFI chamber is planned for mid-Feb.
 * Small Type-C suspensions with mini-GAS.