Electropolishing (EP) is applied to niobium (Nb) superconducting radio frequency (SRF)
cavities, which are used in particle accelerators for their surface treatment. The EP process …

In superconducting radiofrequency accelerating cavities for particle accelerators, the Nb/Cu
structure is one of the alternatives to bulk Nb but R&D is required to achieve a reproducible …

Superconducting radiofrequency (SRF) cavities are vital components of particle accelerators
nowadays. In order to minimise the energy dissipation, a perfect inner surface of the cavity …

The root mean square surface roughness R q of metals is detrimental in several microwave
applications. R q characterization methods are thus largely used and of great interest. In this …

Niobium superconducting cavity performances are limited by the quench magnetic field of
niobium. Maximum achievable accelerating field is estimated by simulation during the …

Pure niobium is used for making superconducting radio frequency (SRF) cavities. These
cavities need to have a good surface finish to achieve maximum performance. The high …

An investigation of the tensile mechanical properties of electron beam welded OFE copper
and high-purity niobium sheets is presented. Specimens were deformed in tension at strain …

Superconducting radio frequency (SRF) cavities performances strongly depend on the
surface preparation. For that reason, surface treatments represent an important aspect in the …

The accelerating gradient Eacc of X-ray Free Electron Laser (XFEL) prototype cavities
manufactured at the industry and treated at DESY demonstrates wide-range scattering from …

Surface preparation of niobium superconducting RF cavities is a critical step for achieving
good RF performance under the superconducting state. Surface defect, roughness, and …