参考粒子在α磁铁中的运动

给出参考粒子对α磁铁入出射角的理论计算, 以及参考粒子在均匀梯度磁场内运动轨迹的解析解, 从物理上解释了α磁铁的消色散原理.

Motion of the Reference Particle in an Alpha Magnet

Alpha magnet is an important component of a short-bunch electron beam injector. In order to realize an achromatic transport , the reference particle should be injected into the alpha magnet with a correct angle. This paper describes an attempt to solve the equations of motion of the reference particle and to find the correct angle. The result, including how to determine the trajectory of the reference particle moving in the magnet, can help us understand the process of the achromatic transport of electron beam through the alpha magnet at a deeper level.