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Research on Alkali Antimonide Photocathode Fabrication Recipe at PKU
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by
Dongming Ouyang,
Liwen Feng,
Senlin Huang,
Kexin Liu,
Shengwen Quan,
Huamu Xie,
Xinkai Zhang,
Sheng Zhao,
Meseck, Atoosa (Ed.),
McAteer, Meghan (Ed.),
Volker RW Schaa,
V\XF6lker, Jens (Ed.)
Published
by JACoW Publishing, Geneva, Switzerland.
2020 Volume ERL2019, Germany
Abstract
Low emittance, high QE and long lifetime photocathode is widely studied for X-ray Free Electron Laser (XFEL)and Energy Recovery Linacs (ERL) applications. A deposition system for alkali antimonide photocathode (K2CsSb, Cs3Sb etc.) is being commissioned at Peking University. In this paper, we present our experimental results on alkali antimonide photocathode with this deposition system. We successfully fabricated Cs3Sb photocathode on oxygen free copper, p-type Si (100) and Mo substrates with QE of 1.4%, 2.6% and 2.6% respectively.
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