CAJ | 학술논문

将环形加速器磁聚焦结构设计中,传统的聚焦和散焦磁铁强度空间中的稳定图方法,应用到更复杂的含有两个以上磁场梯度变量的超周期结构中,从而更深入地理解结构共振的形成机制和隐含的物理意义.利用文中给出的方法,可以指导环形加速器磁聚焦结构的工作点选择.对于一个给定的磁聚焦结构,由于结构共振而导致的束流包络函数变化的不对称性,则是其动力学孔径不对称的一个重要原因.作为实例,给出了在实际机器上的具体应用,同时给出了动力学孔径的模拟计算结果.
장배형가속기자취초결구설계중,전통적취초화산초자철강도공간중적은정도방법,응용도경복잡적함유량개이상자장제도변량적초주기결구중,종이경심입지리해결구공진적형성궤제화은함적물리의의.이용문중급출적방법,가이지도배형가속기자취초결구적공작점선택.대우일개급정적자취초결구,유우결구공진이도치적속류포락함수변화적불대칭성,칙시기동역학공경불대칭적일개중요원인.작위실례,급출료재실제궤기상적구체응용,동시급출료동역학공경적모의계산결과.
The traditional stability diagram for lattice design described in the space of the gradients of a focusing and a defocusing magnet is extended to study more complicated cases, in which the basic cell included in the super-periodic structure has more than two gradients as variables. With the method developed here, it is easy to understand the mechanism and the physics hidden behind these structural resonances and the method can be used to guide the choice of the working points of a given lattice. Applications on the real machines are given as examples, with the simulation results on dynamic aperture.