PAC1989高亮度电子束注入器综述.pdfVIP

© 1989 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. High-Brightness Electron Injectors: A Review* Richard L. Sheffield MS H825, Los Alamos National Laboratory Los Alamos, NM 87545 Abstract HIGH-GRADIENT The last decade has seen increased emphasis on the development of high-brightness electron beams because of rigorous requirements of the new generation of colliders and MASTER the advent of free-electron lasers. This talk describes the approaches now being explored for attaining intense, bright electron beams. The methods for producing bright electron beams include photocathode-based, short-pulse injectors; dc Fig. 1. Schematic of a photoinjector. electrostatic accelerator sources; long-pulse beams, which are then compressed in time using subharmonic bunching; combining first and third harmonics in an accelerator to d