THE FIRST EXPERIMENT OF A 26 GHZ DIELECTRIC BASED

High frequency, high power rf sources are needed for many applications in particle accelerators, communications, radar, etc. We have developed a 26 GHz high power rf source based on the extraction of wakefields from a relativistic electron beam. The extractor is designed to couple out rf power generated from a high charge electron bunch train traversing a dielectric loaded waveguide. The first high beam experiment has been performed at Argonne Wakefield Accelerator facility. The experimental results successfully demonstrated a 15 ns 26 GHz rf pulse generated from the wakefield extractor with a bunch train of 16 bunches. Meanwhile, a short ~ 20 MW rf pulse has been achieved with a bunch train of 4 bunches. Beam Breakup ha