摘要
对直线感应加速器中电子束的输运过程进行数值模拟研究,采用了时域有限差分与粒子模拟相结合的方法。在对直线感应加速器建模的过程中,成功地使用了非均匀网格模型,实现了对加速腔精细结构的建模。并在加速间隙处加入了加速场。通过3个步骤实现了直线感应加速器加速腔中聚束磁场的模拟,最后将聚束场与加速段结合起来模拟电子束的输运过程,并对结果加以分析,验证了方法的正确性。
Finite-difference time-domain method and particle-in-cell simulation were combined to simulate the beam transport process in linear induction accelerators.The non-uniform grid model was used to fulfill the three-dimensional simulation modeling of the accelerator gap,and electric field was generated at the gap.The magnetic field distribution was calculated with three steps,which was generated by the solenoid mounted inside the accelerating cell.Combining the focusing magnetic field with the acceleration section,the electron beam transport process was simulated and its results were analyzed,proving the validity of this method.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第4期913-917,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(10676110)
关键词
直线感应加速器
聚束磁场
加速腔
粒子模拟
linear induction accelerator
beam focusing magnetic field
accelerator cavity
particle-in-cell simulation
