Metal and Semiconductor Photocathodes in the HZDR SRF Gun
Metal and Semiconductor Photocathodes in the HZDR SRF Gun
Teichert, J.; Arnold, A.; Lu, P.; Murcek, P.; Vennekate, H.; Xiang, R.
The superconducting RF photoelectron gun at the ELBE accelerator facility is a high-repetition rate electron injector for CW operation and can provide high average current and high brightness electron beams. During commissioning and operating time different types of photocathodes, metallic (Cu, Mg) and semiconductors (Cs2Te), have been used. We present the preparation processes, properties as well as performance and operational experience of the cathodes in the SRF gun. Furthermore, specific issues like cathode cooling, multipacting, and dark current will be discussed.
Keywords: SRF gun; electron source; photocathode; Mg; Cu; Cs2Te
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- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 26710) publication
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Invited lecture (Conferences)
ERL 17 - The 59th ICFA Advanced Beam Dynamics Workshop on Energy recovery Linacs, 18.-23.06.2017, Geneva, Switzerland
Permalink: https://www.hzdr.de/publications/Publ-26710
Publ.-Id: 26710