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Proceedings Paper

Recent development in optimization of superconducting thin film lead photocathodes at NCBJ in Świerk
Author(s): Robert Nietubyć; Jerzy Lorkiewicz; Robert Mirowski; Marek Barlak; Jan Witkowski; Jacek Sekutowicz; Peter Kneisel
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Paper 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.

Paper Details

Date Published: 25 October 2013
PDF: 10 pages
Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89032B (25 October 2013); doi: 10.1117/12.2035551
Show Author Affiliations
Robert Nietubyć, National Ctr. for Nuclear Research (Poland)
Jerzy Lorkiewicz, National Ctr. for Nuclear Research (Poland)
Robert Mirowski, National Ctr. for Nuclear Research (Poland)
Marek Barlak, National Ctr. for Nuclear Research (Poland)
Jan Witkowski, National Ctr. for Nuclear Research (Poland)
Jacek Sekutowicz, DESY (Germany)
Peter Kneisel, Thomas Jefferson National Accelerator Facility (United States)


Published in SPIE Proceedings Vol. 8903:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013
Ryszard S. Romaniuk, Editor(s)

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