【摘要】 介绍了重离子冷却储存环中螺线管场对束流水平方向和垂直方向产生耦合的原理,由祸合运动方程及耦合系数推导出螺线管场耦合的补偿方法．结合兰州冷却环主环实际的单元结构,工作点选在束流稳定的差共振附近,模拟计算了冷却环主环在电子冷却段没有螺线管、有螺线管和增加补偿螺线管三种情况下的束流发射度及此三种情况下冷却环主环的动力学孔径．通过模拟计算可知螺线管的存在将引起束流的水平方向和垂直方向严重耦合,由于耦合效应,垂直方向的发射度将超出其接受度,致使束流大量损失．针对这种情况,提出了在螺线管两端的合适位置增加一组补偿螺线管的校正方案．模拟结果表明这种措施行之有效．更多还原

【Abstract】 The principle of particle coupling between horizontal and vertical directions in solenoid is presented. Further more, the method of decoupling can be obtained by using the coupling dynamic equations. 5000 particles are tracked under three conditions: CSRm doesn’t contain solenoids, contains main solenoid and toroids, contains compensating solenoids. The results of the particle trace calculations show that the particles coupling between horizontal and vertical is very serious because of the existence of solenoids, and lots of particals are lost. Another two solenoids which locate in the fit place can be used to decrease the coupling intensation. The method is proved to be useful by the trace calculations.更多还原