Nb-Pb Superconducting RF Gun

Sekutowicz, J. ; Iversen, J. ; Kreps, G. ; Moller, W.D. ; Singer, W. ; Singer, X. ; /DESY ; Ben-Zvi, I. ; Burrill, A. ; Smedley, J. ; Rao, T. ; /Brookhaven ; Ferrario, M. ; /Frascati ; Kneisel, P. ; Lab, /Jefferson ; Langner, J. ; Strzyzewski, P. ; /Warsaw, Inst. Nucl. Studies ; Lefferts, R. ; Lipski, A. ; /SUNY, Stony Brook ; Szalowski, K. ; U., /Lodz ; Ko, K. ; Xiao, L. ; /SLAC

Stanford Linear Accelerator Center

关键词: Photons;    75 Condensed Matter Physics, Superconductivity And Superfluidity;    Cavities;    Quantum Efficiency;    Recombination;   

DOI  :  10.2172/878351
RP-ID  :  SLAC-PUB-11792
RP-ID  :  AC02-76SF00515
RP-ID  :  878351

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report on the status of an electron RF-gun made of two superconductors: niobium and lead. The presented design combines the advantages of the RF performance of bulk niobium superconducting cavities and the reasonably high quantum efficiency of lead, as compared to other superconducting metals. The concept, mentioned in a previous paper, follows the attractive approach of all niobium superconducting RF-gun as it has been proposed by the BNL group. Measured values of quantum efficiency for lead at various photon energies, analysis of recombination time of photon-broken Cooper pairs for lead and niobium, and preliminary cold test results are discussed in this paper.