Chin. Phys. Lett.  2019, Vol. 36 Issue (2): 022901    DOI: 10.1088/0256-307X/36/2/022901
NUCLEAR PHYSICS |
Development of Preparation Systems with K$_{2}$CsSb Photocathodes and Study on the Preparation Process
Fan Zhang1,2, Xiao-Ping Li1,2**, Xiao-Shen Li1,2
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
2Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
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Fan Zhang, Xiao-Ping Li, Xiao-Shen Li 2019 Chin. Phys. Lett. 36 022901
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Abstract The next generation of advanced light sources requires photons with large average flux and high brightness, which needs advanced electron gun matched with excellent photocathode materials. K$_{2}$CsSb photocathode has the advantages of high quantum efficiency, long lifetime and instantaneous response. This study introduces the design of a set of K$_{2}$CsSb photocathode preparation systems and detailed preparation process of K$_{2}$CsSb photocathodes, including sequential deposition process and co-deposition process, and finally develops a K$_{2}$CsSb photocathode. The influence of laser power on the quantum efficiency is also investigated.
Received: 26 September 2018      Published: 22 January 2019
PACS:  29.25.Bx (Electron sources)  
  81.05.Hd (Other semiconductors)  
  07.30.Kf (Vacuum chambers, auxiliary apparatus, and materials)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/36/2/022901       OR      https://cpl.iphy.ac.cn/Y2019/V36/I2/022901
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Fan Zhang
Xiao-Ping Li
Xiao-Shen Li
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