Bi-alkali antimonide photocathodes for high brightness accelerators
Source abstract
Abstract
Alkali-antimonide photocathodes were grown on Si(100) and studied by means of XPS and UHV-AFM to validate the growth procedure and morphology of this material. The elements were evaporated sequentially at elevated substrate temperatures (first Sb, second K, third Cs). The generated intermediate K-Sb compound itself is a photocathode and the composition of K2.4Sb is close to the favored K3Sb stoichiometry. After cesium deposition, the surface layer is cesium enriched. The determined rms roughness of 25 nm results in a roughness domination of the emittance in the photoinjector already above 3 MV/m.
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Research context
OpenAlex topics: Photocathodes and Microchannel Plates · Electron and X-Ray Spectroscopy Techniques · Radiation Detection and Scintillator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Helmholtz-Zentrum Berlin 1 , 12489 Berlin, Germany
Brookhaven National Laboratory 2 , Upton, New York 11973, USA
Stony Brook University 3 , Stony Brook, New York 11794, USA
BNL 4 Center for Functional Nanomaterials, , Upton, New York 11973, USA
Lawrence Berkeley National Laboratory 5 , Berkeley, California 94720, USA
References (22)
Show source-provided references
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