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abstract:
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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 Copreliminary cold test results are discussed in this paper.
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