Open AccessDOI
JACoW : High Efficiency Klystron Development for Particle Accelerators
D. A. Constable,Chiara Marrelli,Aaron Jensen,Richard Donald Kowalczyk,Andrey Yu. Baikov,Graeme Burt,Victoria C. R. Hill,Igor Syratchev,I. A. Guzilov,Christopher James Lingwood,Rodolphe Marchesin +10 more
- pp 185-187
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TLDR
In this paper, the authors proposed a bunching-alignment-collection (BAC) method to improve the efficiency of the International Klystron Activity (HEIKA) collaboration.Abstract:
Upcoming large scale particle accelerators, such as the Future Circular Collider (FCC), the Compact Linear Collider (CLIC) and the International Linear Collider (ILC) are expected to require RF drive on the order of 100 MW. Therefore, efforts to improve the efficiency of the specific RF source is of significant interest to the particle accelerator community. Klystrons are an attractive choice as the RF source, with the current state of the art tubes offering efficiencies up to 70%. The High Efficiency International Klystron Activity (HEIKA) collaboration seeks to improve upon this by considering novel methods of electron bunching. Such methods include the core oscillation method (COM), the bunching-alignment-collection (BAC) method, as well as the use of harmonic cavities. The theory behind these bunching methods will be discussed, along with their suitability for specific particle accelerators. In addition, results from numerical simulations predicting klystrons with efficiencies larger than 80% will be presented. Early experimental testing of tubes employing the BAC method will also be presented, demonstrating the efficiency improvements that the scheme offers.read more
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Proceedings ArticleDOI
MAGIC2-D simulations of high efficiency klystrons using the core oscillation method
D. A. Constable,Christopher James Lingwood,Graeme Burt,Andrey Yu. Baikov,Igor Syratchev,Richard Kowalcyzk +5 more
TL;DR: In this article, the use of the core oscillation method (COM) of electron bunching has predicted a significant improvement in efficiency towards 90%, with PIC simulations predicting efficiencies up to 85%.
Journal ArticleDOI
Study on the Efficiency of Klystrons
TL;DR: In this article, the limits of beam-to-radio frequency (RF) efficiency, which are achievable using klystrons, are discussed and the interaction between the electron beam and RF field in the output cavity is also investigated.