| 15～20 mA多峰负氢离子源全三维数值模拟 |
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| 引用本文： | 陈颖.15～20 mA多峰负氢离子源全三维数值模拟[J].强激光与粒子束,2014,26(1):014001. |
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| 作者姓名： | 陈颖 |
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| 作者单位： | 1.电子科技大学 物理电子学院, 成都 61 0054 |
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| 基金项目： | 国家自然科学基金项目(11175040) |
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| 摘 要： | 对自主开发的全三维粒子模拟/蒙特卡罗(PIC/MCC)算法进行了阐述,包括算法流程设计、碰撞处理机制等。采用该算法对中国原子能科学研究院研制的15~20mA负氢离子源进行数值模拟研究,结果显示:该多峰会切离子源能得到空间分布均匀的离子束,采用优化后的虚拟过滤场,不仅能有效过滤高能电子,还将导致离子源下游区域低能电子增多,有效提高负氢离子体积产生效率。
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| 关 键 词： | 多峰负氢离子源 虚拟过滤场 粒子模拟/蒙特卡罗 碰撞处理机制 |
| 收稿时间： | 2013-03-18; |
Three-dimensional numerical simulation on 15~20 mA H- cusp source |
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| Chen Ying.Three-dimensional numerical simulation on 15~20 mA H- cusp source[J].High Power Laser and Particle Beams,2014,26(1):014001. |
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| Authors: | Chen Ying |
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| Institution: | 1.School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | The self-developed 3D PIC/MCC algorithm is described, including the algorithm flow design, collision treatment mechanism and so on. The numerical simulation of the 15~20 mA H- cusp source developed by the China Institute of Atomic Energy is researched with this algorithm. The results show that H- cusp source can produce ion beams that uniformly distribute in objective space. Using the optimized virtual filtering field can effectively filter high-energy electrons and lead to the low-energy electron in the ion source downstream region to increase. The negative hydrogen ions volume generation efficiency is improved effectively. |
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| Keywords: | virtual filtering field particle-in-cell/Monte Carlo collision treatment mechanism |
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