Agenda/Minutes

CRY+VIS Interface Meeting

Date: 2022/3/11 13:00-

Participants:

Replacement of flip cables: The spare feedthrough flange was an old KAGRA type (8 connectors).
TM height setting: ITMY.
Oplev: Setup of the Oplev in EY was almost done. Not yet in IY.
ACC: Installation in EY.
Commissioning in air: Alignment of ITMY.
Commissioning in vacuum:
Acceptance check:
PF actuator: At the in-vacuum commissioning.
New vacuum pumps for V-chambers:
Heater control: Test in IXV/EXV.
Power source for Oplev:
TMS:

Date: 2022/3/11 14:00-

Participants:

Recovered the F2 in IY. The BF was disconnected from the filter chain once, and the F2 was rotated at the F0 receptacle so that the stuck-out cable on the F2 can stay apart from the pole.
The resonant frequencies of the IP became almost the same in L and T. The IP was tuned to 70mH for L and 60mHz for T.
The resonant frequency of the F2 is very low (~0.1Hz). The drift is large. Though the height range of the keystone is large enough, the FR range is very small. The FR is easily stuck on the lower side.

(Date in Kamioka)

The week from 3/14

The week from 3/21

KAGRA/Subgroups/VIS/VISMinutes20220311 (last edited 2022-03-11 14:15:00 by RyutaroTakahashi)

-  ⇤ ← Revision 2 as of 2022-03-10 17:30:14 → 
  Size: 1609
  Editor: RyutaroTakahashi
  Comment:
+   ← Revision 5 as of 2022-03-10 22:47:01 → ⇥
  Size: 2131
  Editor: RyutaroTakahashi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 43:
+ * Recovered the F2 in IY. The BF was disconnected from the filter chain once, and the F2 was rotated at the F0 receptacle so that the stuck-out cable on the F2 can stay apart from the pole.
 * The resonant frequencies of the IP became almost the same in L and T. The IP was tuned to 70mH for L and 60mHz for T.
 * The resonant frequency of the F2 is very low (~0.1Hz). The drift is large. Though the height range of the keystone is large enough, the FR range is very small. The FR is easily stuck on the lower side.