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

uperconducting 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 as recently measured at SLAC National Accelerator facility at Stanford University. We have coated copper cavities with niobium and are now poised to demonstrate performance at the accelerator level. In Phase II of this project we will carry forward the momentum built in the phase I and improve the performance of niobium coated copper cavities for improved RF performance. 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. AASC would license its knowhow and patents to larger companies so as to have an impact on this opportunity.