A Polishing Procedure for High Surface Electric Fields in Superconducting Lead Resonators
- 1 June 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 24 (3), 1130-1132
- https://doi.org/10.1109/tns.1977.4328872
Abstract
A chemical polishing procedure has been developed which allows fields of 20-30 MV/m to be routinely achieved at the surfaces of superconducting resonators constructed of lead-plated copper. This has made possible the construction of lead plated resonators with accelerating fields equivalent to those achieved with niobium, since the performance of these resonators is limited by electric field breakdown.1,2 The polish itself is based on a weak acidic solution of hydrogen peroxide and EDTA, a chelating agent. Other polishes have not proven suitable for the thin (5-10¿) lead layer because of their very high polishing rates. The present procedure, however, gives good polishing action even at rates as slow as 5¿/min. Details of the procedure as well as comparative electric field breakdown data are presented.Keywords
This publication has 2 references indexed in Scilit:
- A New Superconducting Heavy Ion Accelerating Structure Using Chemically Polished Lead SurfacesIEEE Transactions on Nuclear Science, 1975
- Properties of a Superconducting Niobium Test Cavity at 350 MHzIEEE Transactions on Nuclear Science, 1972