| 用于DC-SC光阴极微波电子枪中的Cs2Te光阴极研制 |
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| 引用本文： | 向蓉,林林,张保澄,鲁向阳,全胜文,王莉芳,赵夔. 用于DC-SC光阴极微波电子枪中的Cs2Te光阴极研制[J]. 原子能科学技术, 2004, 38(2): 185-188 |
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| 作者姓名： | 向蓉 林林 张保澄 鲁向阳 全胜文 王莉芳 赵夔 |
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| 作者单位： | 北京大学,重离子物理研究所,射频超导加速器实验室,北京,100871 |
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| 摘 要： | 文章介绍DC-SC光阴极微波电子枪中的关键部件——Cs2Te光阴极的研制。采用两种方法制得了高量子效率要求的Cs2Te光阴极，并实验比较了两种制备方法的效果。针对制备中的超高真空、精确控制Cs原子流量和阴极温度等关键问题，设计了用于DC-SC光阴极微波电子枪中的光阴极制备室。
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| 关 键 词： | DC-SC光阴极微波电子枪 Cs2Te光阴极 量子效率 制备方法 碲 铯 |
| 文章编号： | 1000-6931(2004)02-0185-04 |
Research and Fabrication of the Photocathode Used in DC-SC Photocathode RF Electron Gun |
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| XIANG Rong,LIN Lin,ZHANG Bao-cheng,LU Xiang-yang,QUAN Sheng-wen,WANG Li-fang,ZHAO Kui. Research and Fabrication of the Photocathode Used in DC-SC Photocathode RF Electron Gun[J]. Atomic Energy Science and Technology, 2004, 38(2): 185-188 |
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| Authors: | XIANG Rong LIN Lin ZHANG Bao-cheng LU Xiang-yang QUAN Sheng-wen WANG Li-fang ZHAO Kui |
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| Abstract: | DC-SC photocathode RF electron gun is the new injector based on the laser-driven superconducting RF gun. It has been designed and is on the way of operation at Peking University, in order to produce the beam with high average current required by SASE FEL experiments. High quantum efficiency cesium telluride photocathodes are fabricated in two methods, and the results are compared and analyzed. To resolve the key problems in the preparing process, such as the super high vacuum, the accurate controlling of Cs flux, the temperature of cathode, a new photocathode preparation chamber has been designed for the DC-SC electron gun. |
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| Keywords: | Cs 2Te photocathode quantum efficiency superconducting electron gun |
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