1968•CERN Document Server (European Organization for Nuclear Research)Open access
THE CPS IONIZATION BEAM SCANNER (IBS).
Claire Johnson, L. Thorndahl
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Abstract
Following sone oarly nodel studies, a non-destructive residual-gas ionization proton boan scanner for the CPS ring rms constructed and installed in s.s. 12 at Easter 1968.Derlvlng a signo,l fror.! tho electrons liberated by tho proton bean fron tho rosiduo.lgas of tho Vc.,CUUL1 chanbor, n.nd using C1 crossed eloctric and m,gnetic fiolds oystor.! of electron collection, tho SCQnner givos proton density distributions in the horizontal plQUe \'lith a spatial rosoL,tion of botter than 1 lJr.!.Thc ulti-T.mtotine resolution 1iill bo botter thnn 10 !lS.Six neeks of trials durinG nornal CPS operation and aloo during sone naohine dovelopnent periods yielded l~any in turesting results.The most inportant of these have boon collected tOGether in this report, rlhich also contains a full description of the principles of the device, its construction and sone proposals for its future use.( , ,>, !'.IPS/lnt .
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