JACoW : High Efficiency Klystron Development for Particle Accelerators

• DOI: 10.18429/jacow-eefact2016-wet3ah2
• Publication Date: 2017-07-01
• Authors: D. A. Constable; C. Marrelli; Aaron Jensen; Richard Kowalczyk; A. Yu. Baikov; Graeme Burt; Victoria C. R. Hill; Igor Syratchev; I. A. Guzilov; Christopher James...; Rodolphe Marchesin
• Keywords: Klystron; International Linear Collider; Harmonic

Upcoming large scale particle accelerators, such as the Future Circular Collider (FCC), Compact Linear (CLIC) and International (ILC) are expected to require RF drive on order of 100 MW. Therefore, efforts improve efficiency specific source is significant interest accelerator community. Klystrons an attractive choice source, with current state art tubes offering efficiencies up 70%. The High Efficiency Klystron Activity (HEIKA) collaboration seeks upon this by considering novel methods electron bunching. Such include core oscillation method (COM), bunching-alignment-collection (BAC) method, well use harmonic cavities. theory behind these bunching will be discussed, along their suitability for accelerators. In addition, results from numerical simulations predicting klystrons larger than 80% presented. Early experimental testing employing BAC also presented, demonstrating improvements that scheme offers.