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[[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]] [[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]]
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 * 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.
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 * [[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 items]]: OpLev cover
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/EngineeringRun/ER191217_24|ER theme]]		  * [[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.

Agenda/Minutes of the VIS Meeting on 2019/12/13

2019/12/13 14:00 -

Zoom Meeting

Participants:

VIS Commissioning Task List

Post-O3 task list

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 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 12041. Nevertheless, if we rotate the frame by 90 degrees it seems possible to have more space. See klog 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 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 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

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)

KAGRA/Subgroups/VIS/VISMinutes20191213 (last edited 2019-12-13 15:44:10 by RyutaroTakahashi)