Author: Silva, M. E.
Paper Title Page
MOPGF158 Sirius Control System: Design, Implementation Strategy and Measured Performance 456
 
  • J.P.S. Martins, M. Bacchetti, E.P. Coelho, R.F. Curcio, J.G.R.S. Franco, R.P. Lisboa, P.H. Nallin, A.R.D. Rodrigues, L.D.S. Sachinelli, M. E. Silva
    LNLS, Campinas, Brazil
  
  Sir­ius is a new 3 GeV syn­chro­tron light source cur­rently being de­signed at the Brazil­ian Syn­chro­tron Light Lab­o­ra­tory (LNLS) in Camp­inas, Brazil. The Con­trol Sys­tem will be dis­trib­uted and dig­i­tally con­nected to all equip­ment in order to avoid ana­log sig­nal ca­bles. A three-layer con­trol sys­tem will be used. The equip­ment layer uses RS485 se­r­ial net­works, run­ning at 10Mbps, with a light pro­pri­etary pro­to­col, over a pro­pri­etary hard­ware, in order to achieve good per­for­mance. The mid­dle layer, in­ter­con­nect­ing these se­r­ial net­works, is based on Bea­gle­bone Black sin­gle board com­puter and com­mer­cial switches. Op­er­a­tion layer will be com­posed of PC's run­ning EPICS client pro­grams. Spe­cial topol­ogy will be used for Orbit Feed­back with a ded­i­cated com­mer­cial 10Gbps switch. The lower lay­ers soft­ware im­ple­men­ta­tion may use ei­ther (a) dis­trib­uted EPICS con­ven­tional servers, the tra­di­tional ap­proach, or (b) cen­tral­ized EPICS server, using data servers and light pro­pri­etary pro­to­col over Eth­er­net. Both cases use the same hard­ware and can run con­cur­rently, shar­ing the con­trol net­work. Mea­sured per­for­mance with these two ap­proaches will be pre­sented.  
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