CAJ | 학술논문

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.
대직선감응가속기중전자속적수운과정진행수치모의연구,채용료시역유한차분여입자모의상결합적방법.재대직선감응가속기건모적과정중,성공지사용료비균균망격모형,실현료대가속강정세결구적건모.병재가속간극처가입료가속장.통과3개보취실현료직선감응가속기가속강중취속자장적모의,최후장취속장여가속단결합기래모의전자속적수운과정,병대결과가이분석,험증료방법적정학성.
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.