Author: OLGA MALKOVA ; Type of thesis: Master Thesis
Abstract: INFN – LNL Laboratories have been already working for several years on the problem of removing fluoride ions from a solution for polishing of niobium. Ionic liquids are one of the possible solutions for this problem. The first results of niobium polishing have already been obtained in ionic liquid – Choline Chloride with Urea. During polishing in the ionic liquid was obtained smooth shiny surface with a roughness comparable as obtained after polishing in classic electrolyte. Various additives such as sulfamic acid, ammonium sulfamate, can improve the condition of the surface.
Our task is to apply this knowledge to polish RF cavities. In our work we try to create new ionic liquid and improve one that was previously obtained. In our laboratory we built new system for electropolishing 6 GHz cavities considering the experience of previous years.
National Institute for Nuclear Physics
