本发明公开了一种离子束传输控制优化方法，包括如下步骤：（1） 调节偏转电源，使得聚焦杯获得束流极大值；

The invention discloses an optimum method to control ion beam transmission, which comprises the following steps: (1) adjusting deflecting power to make focusing cup produce beam maximum;

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对大角度非对称矩形切割磁铁杂散磁场的影响进行了分析，指出其在非偏转方向上对束流有一定的偏转量，而且此偏转量是不可忽略的。

The fringing field effects of non-symmetrical large angle rectangular type septum is investigated in this paper. In some condition, the non-intended bending can't be neglected.

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