Agenda/Minutes of the VIS Meeting on 2019/12/13
2019/12/13 14:00 -
Participants: Takahashi, Fabian, Shoda, Tanaka, Lucia, Hirata, Okutomi, Sato, Aso
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
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)