Enhancement in Quality Factor of SRF Niobium Cavities by Material Diffusion

3D Atom Probe Microscopy on Niobium for SRF Cavities

Fermi National Accelerator Laboratory (FNAL) is developing superconducting RF cavities for a future high-energy electron-positron linear collider as the next international, large-scale high energy physics discovery machine. Recently FNAL and the Northwestern University Center for Atom-Probe Tomography (NUCAPT), Evanston, Illinois, have joined forces to investigate the properties of the high pur...

3D Atom-Probe Microscopy on Niobium for SRF Cavities Proposal for LCRD/UCLC 2005

AMAC Technical Closeout Report - “High Resolution and Fast Scanning Speed SQUID Based Non-destructive Inspection System of Niobium Sheets for SRF Cavities” High Resolution and Fast Scanning SQUID Based Non-destructive Inspection System of Niobium Sheets for SRF Cavities

Optical field enhancement factor of Silicon and indium phosphide nano-cavities

Nano cavities based on silicon and indium phosphide materials have been comparedin this study, considering field intensity enhancement factor. The results of FDTD based simulations declare that the Si nano-cavity improves confined optical field about 7.7 times higher than the InP based nano-cavity. The introduced dielectric nano-cavities support resonance wavelength at about λ=1.55 μm.

Study of Ac/rf Properties of Srf Ingot Niobium

In an attempt to correlate the performance of superconducting radiofrequency cavities made of niobium with the superconducting properties, we present the results of the magnetization and ac susceptibility of the niobium used in the superconducting radiofrequency cavity fabrication. The samples were subjected to buffer chemical polishing (BCP) surface and high temperature heat treatments, typica...