PS BGI-Vertical Kick-off Meeting

Tuesday 24 Apr 2018, 10:30 → 11:30 Europe/Zurich

Present: Didier, Gerhard, Hampus, James & Swann

 

*** PS BGI-Vertical specification  ***
 

• Specification same as for BGI-Horizontal, but with the following exceptions:

• Beam aperture requires that the distance between the cathode (-20kV) and ground electrode is 120mm compared to 70mm for BGI-Horizontal.

• -> Aperture of BGI-Vertical needs to be ~50mm greater than that of the BGI-Horizontal magnet.

• Transverse profile should be measured from -21mm < y < +21mm, compared to -28mm < x < +28mm for the BGI-Horizontal (beam centered at x=0, y=0)

• -> Only 3 x Timepix3 hybrid pixel detectors required compared to 4 for the BGI-Horizontal.

 
*** Project timeline ***
 

• Installation at PS SS84 by Spring 2020.

• ECR by end of October 2018.

 

• Milestones for 2018:

• Vacuum tank specification by end of May 2018.

• Manufacturing drawings of the vacuum tank and flanges by end of 2018.

 
*** Other items ***
 

• Budget for BGI-Vertical mechanical (vacuum & instrument) design & production = 155 kCHF.

• For BGI-Horizontal 259 kCHF was spent on mechanical design & production (67 kCHF design, 85 kCHF instrument mechanics & 107 kCHF vacuum mechanics) -> need to reduce costs by 1/3.

 

• Updates to the BGI-Horizontal 3D model have been implemented; update to mechanical drawings delayed due to software problems, but should be solved in the coming weeks.

 
*** Actions ***
 

• Didier to discuss with Dominique the vacuum tank & magnet interface in the coming weeks.

• Swann to simulate the performance of a BGI-Horizontal like design scaled up for the extra 50mm cathode gap needed for the BGI-Vertical.

 
*** Next meeting ***
 
Propose Thursday 24th May 2018 Didier's office at 10am.