Some Aspects of Electron Beam Optics and X-Ray Production with the Linear Accelerator

Abstract

Part I A mathematical presentation of linear accelerator fundamental design parameters leads to optimization formulae for X-ray output and operational stability. A narrow spread of electron energies is desirable in most linear accelerator applications and especially when post-acceleration beam bending is utilized to project a stable high energy X-ray beam at right angles to the accelerator waveguide. Part II Some consideration is given to electron source optics and an analysis of a chopped prebunched injection system is presented together with a comparison of different types of buncher design with emphasis on obtaining narrow energy spectrum small cross-section electron beams. A method of analysing prebunched injection current and buncher acceptance characteristics is described