= Agenda/Minutes of the VIS Meeting on 2019/12/13 =
2019/12/13 14:00 -

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

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

[[https://paper.dropbox.com/doc/VIS-Commissioning-Task-List--AlK26n6oP8QHU_XUQriwv2PvAg-RKcNXfMFrqOtTAPU48qQf|VIS Commissioning Task List]]

[[https://onedrive.live.com/view.aspx?resid=8E8081C20FE5EC3A!2278&ithint=file,xlsx&authkey=!AMFNtNa-Y6CVp94|Post-O3 task list]]

[[https://www.dropbox.com/s/9l1h0fw9kc1pzmm/Proocurement%202019FY.xlsx?dl=0|Procurement list in 2019FY]]

== Progress report ==
=== Type-A ===
==== Past week report ====
==== Plan for coming weeks ====
=== Type B ===
==== Past week report ====
 * Shoda-san modified the real-time model to implement Terrence Method for ASC control strategy. See klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12097|12097]].
 * On   Monday I tested a script for the oplev diagonalization procedure based   on Terrence's work. After the test I realized it required corrections   and I need to use the suspension again. The writing of the proceedure  is  ongoing.
 * On  Tuesday I measured the  space available at the +X side of the SR2 vacuum  chamber. Using the  original orientation of the assembly farme there  would be 17 cm between  the large outer frame and the assembly frame,  whereas on the original  assembly place there were about 34 cm. It  wouldn't be possible to  stand. See klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12041|12041]]. Nevertheless, if we rotate the frame by 90 degrees it seems possible to have more space. See klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12065|12065]].
 * In   the context of SRM bottom filter repairs, I checked whether the SR   chambers have access apertire at the Bottom Filter level like the BS   chamber has. They don't. See klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12117|12117]].   All they have is 20 cm flanges for viewports at the +Y and -Y sides.   This may be a problem if we aim to fix the bottom filter without taking   the suspension out of the chamber. The plan we had thought was to try  to  access the bottom filter using the chamber door and try to insert  the  fibre optic camera throught the holes for locking the keystone.  With the  small aperture we can likely stick in one arm only.
 * I designed a rough version of the limit switch for IM picomotors. See this [[https://www.dropbox.com/s/dh54u2hat9w8jzo/Limit_switch_IM.pdf?dl=0|link]].
 * Who will design the oplev cases?
  * We  share the design of the oplev cover (and the pylon) with CRY. It is  necessary to customize the basic design so as to fit each location, so  that we need to research the present situation of each chamber.

==== Plan for coming weeks ====
=== Type-Bp ===
==== Past week report ====
 * Disassembled the mirror hanging jig.

==== Plan for coming weeks ====
=== OMMT & OSTM ===
==== Past week report ====
==== Plan for coming weeks ====
=== VIS electronics ===
==== Past week report ====
==== Plan for coming weeks ====
=== Other site works ===
=== Safety ===
 * Incidents:

== Discussion ==
 * [[https://www.dropbox.com/s/e0inlp006spuj4m/Schedule%20after%20O3.pdf?dl=0|Revised schedule afetr O3]]
 * [[https://www.dropbox.com/s/9l1h0fw9kc1pzmm/Proocurement%202019FY.xlsx?dl=0|Procurement items]]
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/EngineeringRun/ER191217_24|ER theme]], On call expert in O3.

== Travel Plans ==
 * Travel (Week of 12/16):
  * Takahashi: 18-20(Shift)
  * Sato: 18-19(Kashiwa)
  * Hirata:
  * Shoda: 21-23(Shift)
  * Fujii:
  * Tanaka:

 * Travel (Week of 12/23):
  * Takahashi:
  * Sato:
  * Hirata: 22-24(Shift)
  * Shoda:
  * Fujii:
  * Tanaka:

== Next meeting ==
On 2019/12/20(Fri)