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CHEN YINBAO;M. REISER China Institute of Atomic Energy, P. O. Box 275, Beijing Laboratory for Plasma Research, University of Maryland, College Park, MD 20742. RADIAL FOCUSING IN A LINEAR INDUCTION ACCELERATOR GAP[J]. Atomic Energy Science and Technology, 1991, 25(2): 19-19. DOI: 10.7538/yzk.1991.25.02.0019
Citation: CHEN YINBAO;M. REISER China Institute of Atomic Energy, P. O. Box 275, Beijing Laboratory for Plasma Research, University of Maryland, College Park, MD 20742. RADIAL FOCUSING IN A LINEAR INDUCTION ACCELERATOR GAP[J]. Atomic Energy Science and Technology, 1991, 25(2): 19-19. DOI: 10.7538/yzk.1991.25.02.0019
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    • Abstract
  • The focusing properties of the electric field distribution in a linear inductionaccelerator gap are identical to those of a bipotential electrostatic lens if theparticle gap-transit time is small compared with the time variation of the inducedelectric field. Bipotential lenses are studied systematically only in the nonreletivis-tic case. In this paper we present the results of a theoretical study of the focusingproperties of a symmetrical two-cylinder lens with identical radii and negligibleseparation for relativistic electron beams. Analytical formulas derived by usingthe thin-lens approximation are compared with the results of numerical integrationof the relativistic paraxial ray equation and found to be sufficiently accurate for-practical applications.
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