SPS RENOVATION Final design and status. R.Mompo , P.Dahlen , Y.Bastian, I.Romera, M.Zerlauth . SPS LAYOUT and Magnet Powering. SPS (7 kms ) composed of 6 sextants Main dipole and quad magnets powered in series , power converters located in respective BA
R.Mompo, P.Dahlen, Y.Bastian, I.Romera, M.Zerlauth
During last MPE-TM meeting, we concluded that they were 2 realistic options (#3 or #4) to renovate the SPS interlock system !
Finally, we have chosen option #3 ! I will explain why in the following slides...
Main Dipole and Quadrupole Magnets
Each magnet has an interlock box to collect signals from thermo-switches and for visual indication («trefle»)
6 “new” racks
5 existing racks
1 existing rack
From the WIC side, it is seen as:
4 x (6 x 2) = 48 circuits !
This doesn’t solve our communication pbm for the dipoles!
Overview of the layout of all BAs (for the mains):
(present in each BA)
Dipole & Quads PC’s
Around year 2000, EPC introduced some major changes:
Local PLCs to pilot each PC.
A Hardware Interlock Loop (HIL)!
Centralisation crate for the mains Quads
Crates named «chassis CO» and “CISBOX” are used to distribute signals between «BAs».
Thanks to this HIL loop, our WIC PLCs in each BA do not need to communicate between them!
=> In case of a fault in 1 sextant, the WIC sends a «FPA» to the 2 PCs of the corresponding BA. This will cause the opening of the HIL loop and the trip of the other PCs!
CIB.BA3.S3.Beam Dump Control.
In the future, we could think of replacing this crates (EPC) by a FM352 PLC (High speed Boolean Processor).
We agreed on deadlines to get the programs before!
=> We are impacted.