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Title |
Other Keywords |
Page |
| WET3AH2 |
High Efficiency Klystron Development for Particle Accelerators |
ion, electron, cavity, bunching |
185 |
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- D.A. Constable
Lancaster University, Lancaster, United Kingdom
- A.Yu. Baikov
MFUA, Moscow, Russia
- G. Burt, V.C.R. Hill, C. Lingwood
Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
- I.A. Guzilov
JSC Vacuum Devices Basic Technologies, Moscow, Russia
- A. Jensen
SLAC, Menlo Park, California, USA
- R.D. Kowalczyk
L-3, Williamsport, Pennsylvania, USA
- R. Marchesin
TED, Velizy, France
- C. Marrelli
ESS, Lund, Sweden
- I. Syratchev
CERN, Geneva, Switzerland
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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.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-eeFACT2016-WET3AH2
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| WET3BH1 |
Improvement of Efficiency of Klystron to Apply the CPD Method |
ion, electron, cavity, radiation |
192 |
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- K. Watanabe
KEK, Ibaraki, Japan
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A high power RF system for the particle accelerators needs large electrical power in the operation. An improvement of efficiency is also always required as a technology component for the energy saving. To improve efficiency of a high-power source, the CPD (Collector Potential Depression) method already was applied a Gyrotron to recovery the electrical energy form the collector loss. The CPD is an energy-saving scheme that recovers the kinetic energy of the spent electrons after generating rf power. A CPD klystron (E37703 CPD) was fabricated at 2013, to recycle an existing klystron of Toshiba E3786. The purpose of our study is to demonstrate the proof-of-principle of the CPD method to apply a klystron. A plane of R&D of CPD klystron at KEK will be reported in this meeting.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-eeFACT2016-WET3BH1
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| THS2H6 |
Summary: Joint Session of Other Technologies and Energy Efficiency |
ion, collider, plasma, SRF |
231 |
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- W. Chou
Fermilab, Batavia, Illinois, USA
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This paper summarizes the presentations and discussions at the joint session of 'Other Technologies' and 'Energy Efficiency.' It also highlights several key issues for R&D in these fields.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-eeFACT2016-THS2H6
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