[Seminars] Accelerator Seminar Today - Nov 2

Holly Hernandez holly2 at uchicago.edu
Mon Nov 2 09:04:32 CST 2015


Monday November 2, 2015
ERC 401

Speaker: Anna Grassellino (Fermilab)

Title:  High Q Superconducting RF cavities: the enabling technology for CW accelerators

Abstract:This presentation will cover recent breakthroughs in the SRF field that have revolutionized the achievable quality factors in bulk niobium accelerating 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 FERMILAB, Cornell, Jefferson lab 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 LCLS-2 dressed cavities in cryomodule environment.

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