Review of Particle Physics*
American Physical Society (APS) 98:3 (2018) 030001
Metals Surface characterization of nitrogen-doped Nb (100) large-grain superconducting RF cavity material
JOURNAL OF MATERIALS SCIENCE 53:14 (2018) 10411-10422
Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA
EUROPEAN PHYSICAL JOURNAL C 78:6 (2018) ARTN 473
Toward optimization of centrifugal barrel polishing procedure for treatment of niobium cavities
IEEE Transactions on Applied Superconductivity Institute of Electrical and Electronics Engineers 28:4 (2018) 3500105
Abstract:
Centrifugal barrel polishing (CBP) is a simple and environmentally friendly method that can be applied for mechanical abrasion of the cavity interior in order to remove the mechanically damaged surface after its production. The CBP recipes described in the literature, however, require CBP to be performed in many stages, require long processing times and nevertheless are unable to provide good cavity RF performance without additional chemical processing. Here, we report new results on characterization of cavity surfaces treated with a typical CBP recipe, including the contamination with abrasive particles, plastic deformation and hydrogen contamination, and critically evaluate it. Methods to reduce the depth of significant plastic deformation as well as the modified commercially viable CBP procedure followed by final electropolishing are proposed and tested on samples.Further studies of isolated photon production with a jet in deep inelastic scattering at HERA
JOURNAL OF HIGH ENERGY PHYSICS (2018) ARTN 032