Wire scanners in low energy accelerators

Details Wire scanners in low energy accelerators Wire scanners in low energy accelerators

1997-03-12

arxiv.org/abs/physics/9703018v1

Nucl.Instrum.Meth. A396 (1997) 13-22

Physics

Accelerator Physics

20 pages, 8 Postscript figures, uses elsart.cls

Scientific paper

10.1016/S0168-9002(97)00726-2

Fast wire scanners are today considered as part of standard instrumentation in high energy synchrotrons. The extension of their use to synchrotrons working at lower energies, where Coulomb scattering can be important and the transverse beam size is large, introduces new complications considering beam heating of the wire, composition of the secondary particle shower and geometrical consideration in the detection set-up. A major problem in treating these effects is that the creation of secondaries in a thin carbon wire by a energetic primary beam is difficult to describe in an analytical way. We are here presenting new results from a full Monte Carlo simulation of this process yielding information on heat deposited in the wire, particle type and energy spectrum of secondaries and angular dependence as a function of primary beam energy. The results are used to derive limits for the use of wire scanners in low energy accelerators.

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