Recent development in optimization of superconducting thin film lead photocathodes at NCBJ in Świerk

Robert Nietubyć; Jerzy Lorkiewicz; Robert Mirowski; Marek Barlak; Jan Witkowski; Jacek Sekutowicz; Peter Kneisel

doi:10.1117/12.2035551

25 October 2013 Recent development in optimization of superconducting thin film lead photocathodes at NCBJ in Świerk

Robert Nietubyć, Jerzy Lorkiewicz, Robert Mirowski, Marek Barlak, Jan Witkowski, Jacek Sekutowicz, Peter Kneisel

Proceedings Volume 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013; 89032B (2013) https://doi.org/10.1117/12.2035551
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 2013, Wilga, Poland

Abstract

We report the efforts undertaken at NCBJ and some of its collaborating laboratories dedicated to prepare pure and flat lead film coated onto niobium to operate as superconducting photocathodes. Three approaches to lead cathodic arc deposition have been implemented and tested: active plasma flux filtering, passive filtering and unfiltered flux. None of them allowed us to find a proper balance between thickness and surface roughness of a cathode. At that point efforts were taken to establish post-deposition heat treatment of lead film.

Citation Download Citation

Robert Nietubyć, Jerzy Lorkiewicz, Robert Mirowski, Marek Barlak, Jan Witkowski, Jacek Sekutowicz, and Peter Kneisel "Recent development in optimization of superconducting thin film lead photocathodes at NCBJ in Świerk", Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89032B (25 October 2013); https://doi.org/10.1117/12.2035551

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