Free-Energy and Emittance Growth Caused by Bunched Beam with Nonuniform Distributions in Both Longitudinal and Transverse Directions in Linac

• 作者: Chen, Yinbao Fu, Shinian Huang, Zhibin
• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: Free energy EMITTANCE growth Longitudinal NONUNIFORM DISTRIBUTION Transverse NONUNIFORM DISTRIBUTION
• 年，卷（期）: 1995,（4）
• 页码范围: 345-352
• 页数: 8页
• 分类号: O4

摘要

【正】 The nonlinear space charge effect of bunched beam in linac is one of theimportant factors that induces the emittance growth due to the conversion of thefield energy to kinetic energy. Using a cylinder model of space charge in a linac,we derive the internal energy for a bunched beam with some nonuniform spacecharge distributions, such as Gaussian, waterbag and parabolic distributions inboth the longitudinal and transverse directions. And the emittance growth causedby these nonuniformities is worked out.