40 citations · 81 across the 5 of their papers we have counts for
5 papers
Theory of Nb-Zr Alloy Superconductivity and First Experimental Demonstration for Superconducting Radio-Frequency Cavity Applications
Nathan S. Sitaraman, Zeming Sun, Ben Francis +8
Niobium-zirconium (Nb-Zr) alloy is an old superconductor that is a promising new candidate for superconducting radio-frequency (SRF) cavity applications. Using density-functional a…
The Importance of the Electron Mean Free Path for Superconducting RF Cavities
J. T. Maniscalco, D. Gonnella, M. Liepe
Impurity-doping is an exciting new technology in the field of SRF, producing cavities with record-high quality factor and BCS surface resistance that decreases with increasin…
Nitrogen-Doped 9-Cell Cavity Performance in a Test Cryomodule for LCLS-II
Dan Gonnella, Ralf Eichhorn, Fumio Furuta +13
The superconducting RF linac for LCLS-II calls for 1.3 GHz 9-cell cavities with an average intrinsic quality factor Q0 of 2.7x10^10 at 2 K and 16 MV/m accelerating gradient. Two ni…
On superconducting niobium accelerating cavities fired under N2-gas exposure
Ralf Eichhorn, Daniel Gonnella, Georg Hoffstaetter +2
The dependence of the Q-value on the RF field (Q-slope) is actively studied in various accelerator laboratories. Although remedies against this dependence have been found, the phys…
Temperature dependence of the superheating field in niobium
N. R. A. Valles, M. U. Liepe
This study experimentally investigates the temperature dependence of superheating field, Hsh, of niobium. Accurately determining this field is important both to test theory and to…