Hasan Padamsee is currently Adjunct Professor and Senior Physicist at Cornell University, where he is the project leader of the Superconducting Radio Frequency Group, pushing the advancement of accelerator technology for particle physics at the energy and luminosity frontiers. Conducting research and development in the field for more than 30 years, he collaborates with accelerator laboratories around the world, including Fermilab, Jefferson Lab, SLAC, CERN and DESY. Among his many publications are the first volume to the present book, "RF Superconductivity for Accelerators", as well as other books and many review articles in encyclopedias. Professor Padamsee was appointed Fellow of the American Physical Society in 1993.