471 citations · 2.2k across the 35 of their papers we have counts for
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Field-dependent surface resistance for superconducting niobium accelerating cavities -- condensed overview of weak superconducting defect model
Wolfgang Weingarten
Small (compared to coherence length) weak superconducting defects when located at the surface, combined with the proximity and percolation effects, are claimed responsible for vari…
CBETA Design Report, Cornell-BNL ERL Test Accelerator
G. H. Hoffstaetter, D. Trbojevic, C. Mayes +51
This design report describes the construction plans for the world's first multi-pass SRF ERL. It is a 4-pass recirculating linac that recovers the beam's energy by 4 additional, de…
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…
Thermocurrents and their Role in high Q Cavity Performance
R. Eichhorn, C. Daly, F. Furuta +12
Over the past years it became evident that the quality factor of a superconducting cavity is not only determined by its surface preparation procedure, but is also influenced by the…
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…
Superconducting H-mode Structures for Medium Energy Beams
R. Eichhorn, U. Ratzinger
Room temperature IH-type drift tube structures are used at different places now for the acceleration of ions with mass over charge ratios up to 65 and velocities between 0.016 c an…