Abstract by Jared Carlson
Physics and Astronomy
Dependence of the superconducting superheating field on material inhomogeneity
In particle accelerators, Superconducting Radio Frequency (SRF) cavities are used to transfer energy to particles through induced electric fields. A limiting factor in the efficiency of these cavities is the superconducting material’s properties, mainly the so-called superheating field, i.e., the largest magnetic field that the superconductor can withstand before becoming a normal metal. Using the Ginzburg-Landau model, we explore the dependence of the superheating field on the type and purity of the superconducting materials used. We solve the Ginzburg-Landau equations using finite element numerical methods. Our goal is to understand the role of material inhomogeneity in determining a sample's superheating field. Our results will allow for more effective SRF cavities to be constructed, which will decrease both the cost and size of particle accelerators.