Differences between revisions 12 and 14 (spanning 2 versions)

Agenda/Minutes of the VIS Meeting on 2020/8/7

2020/8/7 14:00 -

Participants:

Progress report

[Miyo] Installed the Prequa system in TypeA
- (This week) Installation was finished. Now I try to diagonalize sensors and balance actuators by using the Prequa system.
- (Next week) I will do the modal damping on TypeA suspensions after the initialization work for sensors and actuators.

On Monday I submitted the paper to CPC: JGW-P2011860.
Noise budget paper: I calculated upper limits to DAC and coil driver noise contribution to DARM for the BS: klog 14875.

Noise budget paper: Fabian calculated upper limits to DAC and coil driver noise contribution to DARM for PRM: klog 14876.

KAGRA is in "Upgrade phase for O4". PreQua system was implemented to the Type-A.
Confirmation of personnel at the site.
- Type-A team: Takahashi, Sato, Miyo, + Company(Jan-Apr)
- Type-B/Bp team: (Shoda,) Hirata, Fabian, Washimi, + Company(Oct-Dec)
Procedure documents are required by SEO.
- Type-A tower
- Limit switches
- Wire gluing in PR3 (by Shoda)
- Filter height adjustment in Type-B (by Fabian)
Schedule towards O4 (Chart) was revised.

cf. Post Obs. task (Request), Task for O3c (Plan, Sheet), Task towards O4 (List).

[Washimi] Room Temmperature report(https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/SEM/fig_GAS/)
- We turned on the FFUs in CS and Y-end on 2020-8-3 to recover the room temperature (klog14851) ->RT becames about the same as before the heavy rain.
- BS temperature was droped (~0.6 degC) in this morning (klog14879) -> The Ondotori was dropped.

KAGRA/Subgroups/VIS/VISMinutes20200807 (last edited 2020-08-07 14:58:03 by RyutaroTakahashi)

-  ⇤ ← Revision 12 as of 2020-08-07 13:33:53 → 
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  Editor: KousekiMiyo
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+   ← Revision 14 as of 2020-08-07 13:43:46 → ⇥
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  Editor: tatsuki.washimi
  Comment:
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-  * Installation was finished.
  * Now I try to diagonalize sensors and balance actuators by using the Prequa system. 
  * I will do the modal damping on TypeA suspensions after the initialization work for sensors and actuators. (Next week)
+  * (This week) Installation was finished. Now I try to diagonalize sensors and balance actuators by using the Prequa system. 
  * (Next week) I will do the modal damping on TypeA suspensions after the initialization work for sensors and actuators.
-Line 48:
+Line 47:
+  * [Washimi] Room Temmperature report([[https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/SEM/fig_GAS/]])
    * We turned on the FFUs in CS and Y-end on 2020-8-3 to recover the room temperature ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=14851|klog14851]]) ->RT becames about the same as before the heavy rain. 
    * BS temperature was droped (~0.6 degC) in this morning ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=14879|klog14879]]) -> The Ondotori was dropped.