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AbstractAbstract
[en] K2CsSb is an attractive photocathode for high current applications. With a quantum efficiency of >4% at 532nm and >10% at 355nm, it is the only cathode to have demonstrated an average current of 35mA in an accelerator environment We describe ongoing cathode development work. for the energy recovery linac being constructed at BNL Several cathodes have been created on both copper and stainless steel substrates, and their spatial uniformity and spectral response have been characterized. Preliminary lifetime measurements have been performed at high average current densities (>1 mA/mm2).
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1 Oct 2008; 7 p; Workshop on Sources of Polarized Electrons and High Brightness Electron Beams; Newport News, VA (United States); 1-3 Oct 2008; KB0202; AC02-98CH10886; Available from http://www.bnl.gov/isd/documents/70459.pdf; PURL: https://www.osti.gov/servlets/purl/970513-NdxRbG/; 1 - 6
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ACCELERATORS, ALLOYS, CARBON ADDITIONS, CATHODES, EFFICIENCY, ELECTRODES, ELEMENTS, HIGH ALLOY STEELS, IRON ALLOYS, IRON BASE ALLOYS, METALS, NATIONAL ORGANIZATIONS, PARTICLE SOURCES, RADIATION SOURCES, STEELS, TRANSITION ELEMENT ALLOYS, TRANSITION ELEMENTS, US AEC, US DOE, US ERDA, US ORGANIZATIONS
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