Improved Space Charge Modeling for Simulation and Design of Photoinjectors

Robert H. Jackson, Thuc Bui, John Verboncoeur

关键词: Photoinjector;    simulation;    space charge;    charge particle analysis;   

DOI  :  10.2172/1029945
RP-ID  :  1
PID  :  OSTI ID: 1029945

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

Photoinjectors in advanced high-energy accelerators reduce beam energy spreads and enhance undulator photon fluxes. Photoinjector design is difficult because of the substantial differences in time and spatial scales. This Phase I program explored an innovative technique, the local Taylor polynomial (LTP) formulation, for improving finite difference analysis of photoinjectors. This included improved weighting techniques, systematic formula for high order interpolation and electric field computation, and improved handling of space charge. The Phase I program demonstrated that the approach was powerful, accurate, and efficient. It handles space charge gradients better than currently available technology.