Nb-on-Cu cavities for 700-1500 MHz SRF accelerators

Superconducting Radiofrequency Accelerators consume much less power than room temperature accelerators, so can one day replace larger accelerators that are used in medicine and industry. Breakthroughs are needed: replacement of costly bulk niobium cavities by cheaper copper cavities that have a skin of niobium; higher temperature superconductors that reduce cryogenic costs. Alameda Applied Sciences Corporation (AASC) has demonstrated thin films of niobium that have the superconducting properties of bulk niobium. Recently we have coated copper cavities with niobium and are now poised to demonstrate performance at the accelerator level. This project will carry our momentum forward to demonstration of good performance via tests conducted at major national laboratories such as Jefferson Lab, Argonne National Lab, and Fermi Lab. Commercial Applications and Other Benefits: Various governments alone are expected to invest $1B over the next decade or so into superconducting accelerators. Private sector investment would match or exceed that with breakthroughs as noted above. AASC would license its knowhow and patents to larger companies so as to have an impact on this opportunity.