= Agenda/Minutes of the VIS Meeting on 2020/6/12 =
2020/6/12 14:00 - 15:00

[[https://zoom.us/j/203743987|Zoom Meeting]]

Participants: Takahashi, Hirata, Miyo, Aso, Fabian, Sato, Lucia, Shoda, Tanaka

== Progress report ==
=== General ===
 * Miyo made VIS_COILOUT_ALERT.mdl to alert us when the output signal reach to maximum count of DAC. If the signal above 30% of the max, text is colored by yellow, and if above 70% it colored by red. simple. This work was posted on [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=14485|klog#14485]].

=== Type-A ===
=== Type-B ===
 * The decay times measurement were finished. See klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=14510|14510]] for details.
 * As preparation for the control upgrade next week Miyo-kun and Fabian will modify the Type-B real-time model. It seems the modification is simple enough to do it remotely and we will ask Nakano-kun to restart the model after compilation. It only implies copying, pasting and renaming a few blocks. We received advice from Yamamoto-kun about the status of the connection of the IXV seismometer to the Dolphin network via the LSC model.
 * Writing of the Type-B paper continues.

=== Type-Bp ===
=== Type-C ===
 * Location of the present IMMT2 suspension is unknown. We need to check it opening the chamber to start the design of new footprint.

=== Controls ===
 * There is a wiki page with the plan agreed on Wednesday: [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/OpsManual/TypeB/ControlWork01|control upgrade wiki page]].
 * FTE analysis of heat link is on going. About to implement it into the suns model.

=== Electronics ===
 * Start to make the circuit from the next week.
 * Designed circuit consists of 10th order LPF and BPF.

== Post O3 ==
 * Post Obs. tasks are on going. Decay time measurement in SR2 was performed in this week. Sensor correction for SRs and SR suspension update are planed in the next week.
 * O3c has not been decided yet, but the situation is going to O4 directly.
 * The site work towards O4 is rescheduled. The extended chief meeting will be held on June 15th to discuss about the plan towards O4.
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11475|Revised schedule towards O4]].
 * [[https://www.dropbox.com/s/60oygtwmckmdyj6/Towards%20O4%20on%20VIS%20.xlsx?dl=0|Revised task list towards O4]].

cf. Post Obs. task ([[https://docs.google.com/spreadsheets/d/1w4q8OvX9E6nkYSgshLYLoZH5yvQXHvGmL1agux8ztx0/edit?usp=sharing|Request]]), Task for O3c ([[https://paper.dropbox.com/doc/Plan-for-the-long-OR-brake--AxxlJFvK1IGJjqrG5nfdHfGXAQ-KqexeqMaCA7DITFGxA5ih|Plan]], [[https://www.dropbox.com/s/hoadb73fdyah02c/Post-O3%20task.xlsx?dl=0|Sheet]]).

== Safety ==
== Discussion ==
== Travel Plans ==
== Next meeting ==
 * On 2020/6/19(Fri)