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Chinese Physics C> 2012, Vol. 36> Issue(5) : 475-478 DOI: 10.1088/1674-1137/36/5/017

Cs2Te photocathode fabrication system at Peking University

  • A cesium telluride (Cs2Te) photocathode with a quantum efficiency of 13% at 253.7 nm (radiant incidence 200 μ/cm2) is fabricated by tellurium and cesium vapor deposition onto a stainless-steel substrate. The cesium telluride cathode will be used to provide a high-brightness electron beam source for the 3+1/2 photo-injector at Peking University. The design of the system, the fabrication procedures and the preliminary experimental results are presented in this paper.
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    [1] ZHAO Kui, CHEN Jia-Er, QUAN Sheng-Wen et al. Nucl. Instrum. Methods Phys. Res. A, 2002, 483(1-2): 125-1282 DING Yuan-Tao, HUANG Sen-Lin, ZHUANG Jie-Jia, WANG Yu-Gang, ZHAO Kui, CHEN Jia-Er. Nucl. In- strum. Methods Phys. Res. A, 2004, 528(1-2): 416-4203 ZHAO Kui, CHEN Jia-Er, HAO Jian-Kui, HU Yan-Le, QUAN Sheng-Wen, ZHANG Bao-Cheng, ZHUANG Jie-Ji. Nucl. Instrum. Methods Phys. Res. A, 2001, 475(1-3):564-5684 HAO Jian-Kui, ZHU Feng et al. 3.5-Cell Superconducting Cavity for DC-SRF Photoinjector at Peking University. Proceedings of SRF2009. Germany, Berlin, 20095 KONG S H et al. Cesium Telluride Photocathodes. J. Appl. Phys. (Suppl), 1995, 77: 6031-60386 Michelato P et al. Nucl. Instrum. Methods Phys. Res. A,1997, 393: 464-468

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DAI Jin, QUAN Sheng-Wen, CHANG Cheng, LIU Ke-Xin and ZHAO Kui. Cs2Te photocathode fabrication system at Peking University[J]. Chinese Physics C, 2012, 36(5): 475-478. doi: 10.1088/1674-1137/36/5/017
DAI Jin, QUAN Sheng-Wen, CHANG Cheng, LIU Ke-Xin and ZHAO Kui. Cs2Te photocathode fabrication system at Peking University[J]. Chinese Physics C, 2012, 36(5): 475-478.  doi: 10.1088/1674-1137/36/5/017 shu
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Received: 2011-07-27
Revised: 2011-08-30
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Cs2Te photocathode fabrication system at Peking University

  • Received Date: 2011-07-27
  • Accepted Date: 2011-08-30
  • Available Online: 2012-05-05

Abstract: A cesium telluride (Cs2Te) photocathode with a quantum efficiency of 13% at 253.7 nm (radiant incidence 200 μ/cm2) is fabricated by tellurium and cesium vapor deposition onto a stainless-steel substrate. The cesium telluride cathode will be used to provide a high-brightness electron beam source for the 3+1/2 photo-injector at Peking University. The design of the system, the fabrication procedures and the preliminary experimental results are presented in this paper.

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