Beams Document 4849-v1

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High Q research: new developments, and implications

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Fernanda G Garcia
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Fernanda G Garcia
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26 May 2015, 15:16
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26 May 2015, 15:16
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26 May 2015, 15:16
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This presentation will cover recent breakthroughs in the SRF field that have revolutionized the achievable quality factors in bulk niobium cavities. It will cover two main breakthroughs: one involving the controlled nitrogen doping of the niobium cavity surface, and second the efficient magnetic flux expulsion from the niobium walls via controlled cavity cooling though transition temperature. The talk will give an overview from the discovery of these effects at FNAL to the development into a cryomodule ready technology by the partner labs Cornell, Jlab, FNAL and SLAC for implementation in the LCLS-2 accelerator. New results will be presented from surface analysis, cavity diagnostics tools and very high Q obtained in dressed cavities in cryomodule environment.
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