U.S. Particle Accelerator School

RF-SC Technology course

Sponsoring University:

Indiana University


RF-SC Technology


Hasan Padamsee, Cornell University

Superconducting technology is expanding into more and more areas of accelerator technology. This is especially true for magnets and rf-systems. Due to the rapid advances in this technology, we will continue to provide courses for both aspects at this and future Schools. This course will cover the status of present day RF-SC Technology to be followed, next week, by another course on applications. 

The course will introduce the basic concepts of microwave cavities for accelerators and the fundamentals of RF superconductivity. In the second part we cover observed behavior such as residual resistance, thermal breakdown and field emission - together with the underlying causes. An important segment of the course covers technological aspects such as cavity fabrication, tuning, surface treatment, clean-room environments, niobium purification and thermometry diagnostics. Throughout the course, students will use this information to understand principles for optimum cavity design for a specific accelerator application. Finally we will cover related components such as input couplers and higher order mode dampers. Examples will be drawn from operating accelerators as well as future facilities planned for the high-current and high-energy frontiers. Prerequisites: A course in Electromagnetism.