Research activities of photocathodes for HZDR SRF gun
Research activities of photocathodes for HZDR SRF gun
Xiang, R.; Arnold, A.; Freitag, M.; Michel, P.; Murcek, P.; Teichert, J.
Since 2005 the photocathode laboratory has been in operation at HZDR. The main goal is to prepare Cs2Te photocathodes for the SRF gun. A vacuum transport system with UHV is used to move the cathodes from preparation lab to accelerator hall. Up to now 34 Cs2Te photocathodes have been deposited and eight of them have been used in the SRF gun. Quantum efficiency (QE) of 1% and life time of months can be maintained during the gun operation. At the same time activities are directed towards new photocathode materials with high Q.E. for high current electron sources. Cs3Sb and GaN(Cs) photocathodes have been tested as new candidates, and the design of a preparation system for GaAs(Cs, O) is ongoing
Keywords: SRF-gun; Photocathode; Quantum efficiency
Involved research facilities
- Radiation Source ELBE DOI: 10.17815/jlsrf-2-58
Related publications
- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 17268) publication
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Contribution to proceedings
International Particle Accelerator Conference 2012 (IPAC2012), 20.-25.05.2012, New Orleans, USA
Proceedings of IPAC2012, 978-3-95450-115-1, 1524 -
Poster
International Particle Accelerator Conference 2012 (IPAC2012), 20.-25.05.2012, New Orleans, USA
Permalink: https://www.hzdr.de/publications/Publ-17268