Simulation of ion extraction and beam transport (invited)
Simulation of ion extraction and beam transport (invited)
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DOI：
10.1063/1.1150303
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发表时间：
2000-02
影响因子：
1.6
通讯作者：
P. Spädtke;C. Mühle
中科院分区：
文献类型：
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作者：
P. Spädtke;C. Mühle
三维代码 KOBRA3 已用于模拟非对称提取系统，例如来自电子回旋共振 (ECR) 离子源和潘宁离子源 (PIG) 的提取系统。对于 ECR 情况，由于六极磁铁，颗粒分布是不对称的。 PIG 源提取通常是磁场方向上的狭缝。如果没有空间电荷补偿，提取的离子束通常无法传输。补偿粒子的产生和行为以及由此产生的光束传输也已使用 KOBRA3 进行了模拟。描述这种补偿的模拟中所应用的模型类似于用于提取问题的等离子体中的空间电荷补偿的模型。模拟与实验结果非常吻合。
The three dimensional code KOBRA3 has been used to simulate nonsymmetric extraction systems such as from an electron cyclotron resonance (ECR) ion source and a Penning ion source (PIG). For the ECR case the particle distribution is nonsymmetric due to the hexapole magnet. The PIG source extraction is usually a slit in magnetic field direction. The extracted ion beams usually cannot be transported without space charge compensation. The creation and behavior of the compensating particles and the resulting beam transport has been simulated with KOBRA3 as well. The applied model in the simulation describing this compensation is similar to the model used for space charge compensation in the plasma for extraction problems. Good agreement of the simulations with the experimental results has been obtained.