空间电荷效应对回旋加速器轴向注入的影响

针对空间电荷效应对束流的影响，对注入系统进行优化设计，减少了传输过程中的粒子损失，建立了一个高效率的强流回旋加速器注入系统．通过模拟束流的传输过程，观察空间电荷效应对束流产生的影响，进一步对注入系统的元件参数进行适当的优化，从而对束流包络进行控制．经修改光路设计后，束流已经明显地趋于平缓，各个关键点的束半径得到了很好的控制，从而减小了空间电荷效应所带来的束流损失，提高了注入系统的注入效率．

Influence of space charge effect on the axial injection of high intensity cyclotrons

The influence of space charge effect on the beams was considered to optimize the axial injection System. An injection system for a 100 MeV cyclotron with high intensity and efficiency was designed. The infection of the space charge was observed by simulating the transmission of the beams, and the parameters of the system were optimized to control the envelope of the beam. In the modified light path design, the beams moved very smoothly and the envelope of the beam at the key points were controlled very well. The particle loss due to space charge effect was reduced to raise the injection efficiency of the injection system.