| 光阴极微波电子枪中发射度补偿及模拟计算 |
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| 引用本文： | 刘圣广,李永贵.光阴极微波电子枪中发射度补偿及模拟计算[J].原子核物理评论,2002,19(3):338-341. |
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| 作者姓名： | 刘圣广 李永贵 |
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| 作者单位： | 中国科学院高能物理研究所自由电子激光室; |
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| 基金项目： | 上海SDUV-FEL基金资助项目 |
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| 摘 要： | 介绍了上海深紫外自由电子激光用光阴极微波电子枪采用发射度补偿技术的结果 .详细分析了线性空间电荷力的特点及对束流发射度的影响 ,从束流动力学和相空间两方面讨论了发射度补偿原理 .给出了补偿线圈的设计结构及其轴向场分布 .利用PARMELA程序对补偿效果作了模拟计算 .结果表明 ,设计的腔体对单圈 1 .5nC束团 ,在枪出口后 1 .2m处 ,电子能量为 5 .7MeV ,横向归一化发射度εn ,RMS=1 .61 2πmm·mrad. The emittance compensation technology will be used on the photo cathode RF gun for Shanghai SDUV FEL. In this paper, the space charge force and its effect on electron beam transverse emittance in RF gunis is studied, the principle of emittance compensation in phase space is discussed. We have designed a compensation solenoid and calulated its magnetic field distribution. Its performance has been studied by the code PARMELA. A simulation result indicates that the normalized transverse RMS emi...
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| 关 键 词： | 光阴极微波电子枪 补偿线圈 空间电荷力 |
| 文章编号： | 1007-4627(2002)03-0338-04 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2002年2月5日 |
Analysis of Emittance Compensation and Simulation Results to Photo-cathode RF Gun |
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| Institution: | Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100080; China |
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| Abstract: | The emittance compensation technology will be used on the photo cathode RF gun for Shanghai SDUV FEL. In this paper, the space charge force and its effect on electron beam transverse emittance in RF gunis is studied, the principle of emittance compensation in phase space is discussed. We have designed a compensation solenoid and calulated its magnetic field distribution. Its performance has been studied by the code PARMELA. A simulation result indicates that the normalized transverse RMS emi... |
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