Cs2 Te photocathode fabrication system at Peking University |
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| Authors: | DAI Jin QUAN Sheng-Wen CHANG Cheng LIU Ke-Xin ZHAO Kui |
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| Affiliation: | 3) Institute of Heavy Ion Physics, Peking University, Beijing 100871, China |
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| Abstract: | A cesium telluride (Cs 2 Te) photocathode with a quantum efficiency of 13% at 253.7 nm (radiant incidence 200 μW/cm 2 ) 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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| Keywords: | photo-injector photocathode Cs 2 Te quantum efficiency |
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