Microbunching Due to Coherent Synchrotron Radiation in a Bunch Compressor.

Stupakov, G.

Technical Information Center Oak Ridge Tennessee

关键词: Beam bunching;    Bunch compressors;    Longitudinal modulation;    Coherent radiation;    Microwave modulation;   

RP-ID  :  DE2001787236

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The coherent synchrotron radiation of a bunch in a bunch compressor may lead to the microwave instability producing longitudinal modulation of the bunch. This modulation generates coherent radiation with the wave length small compared to the bunch length. It can also be a source if an undesirable emittance growth in the compressor. We derive and analyze the equation that describes linear evolution of the microwave modulation. Numerical solution of this equation for the LCLS bunch compressor reveals such an instability, in qualitative agreement with numerical simulations.