Paper  Title  Page 

WEXBA4 
Comparison of Numerical Methods for the Calculation of Synchrotron Radiation From Electrons  


The phenomenon of synchrotron radiation from electrons is at the core of modern accelerator based light sources. While synchrotron radiation in the far field has been well established, the selfconsistent beam dynamics due to the nearfield synchrotron radiation becomes increasingly important as highbrightness beams and coherent light sources are developed. Since it is difficult to diagnose the near fields in experiments, accurate and efficient numerical methods are essential to the design of these light sources. Here, we investigate several existing methods for the calculation of the radiation near fields, including the finite difference method, the LienardWiechert method and a novel nearfield method. We compare the accuracy and efficiency of these methods in both 1D and multidimensions, for both steadystate and dynamic beam trajectories, both radiation field and space charge field, as well as for both coherent and incoherent fields. We also discuss a selfsimilarity feature in the synchrotron radiation that can be exploited to improve the calculation.
Work supported by the LDRD program at LANL. 

Slides WEXBA4 [8.569 MB]  
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