Characterization of a superconducting Pb photocathode in a superconducting rf photoinjector cavity

Photocathodes are a limiting factor for the next generation of ultrahigh brightness photoinjectors. We studied the behavior of a superconducting Pb cathode in the cryogenic environment of a superconducting rf gun cavity to measure the quantum efficiency, its spatial distribution, and the work functi...

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Detalles Bibliográficos
Autores principales: Barday, R, Burrill, A, Jankowiak, A, Kamps, T, Knobloch, J, Kugeler, O, Matveenko, A, Neumann, A, Schmeißer, M, Volker, J, Kneisel, P, Nietubyc, R, Schubert S, Smedley J, Sekutowicz, J, Will, I
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Phys. Rev. ST Accel. Beams 2014
Materias:
Accelerators and Storage Rings
12: Innovative Radio Frequency Technologies (RF)
12.1: Coordination and Communication
Acceso en línea:https://dx.doi.org/10.1103/PhysRevSTAB.16.123402
http://cds.cern.ch/record/1702631
Descripción
Sumario:Photocathodes are a limiting factor for the next generation of ultrahigh brightness photoinjectors. We studied the behavior of a superconducting Pb cathode in the cryogenic environment of a superconducting rf gun cavity to measure the quantum efficiency, its spatial distribution, and the work function. We will also discuss how the cathode surface contaminants modify the performance of the photocathode as well as the gun cavity and we discuss the possibilities to remove these contaminants.

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