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Toward High-Power Klystrons With RF Power Conversion Efficiency on the Order of 90%

Baikov, Andrey Yu.; Marrelli, Chiara LU and Syratchev, Igor (2015) In IEEE Transactions on Electron Devices 62(10). p.3406-3412
Abstract
The increase in efficiency of RF power generation for future large accelerators is considered a high priority issue. The vast majority of the existing commercial high-power RF klystrons operates in the electronic efficiency range between 40% and 55%. Only a few klystrons available on the market are capable of operating with 65% efficiency or above. In this paper, a new method to achieve 90% RF power conversion efficiency in a klystron amplifier is presented. The essential part of this method is a new bunching technique-bunching with bunch core oscillations. Computer simulations confirm that the RF production efficiency above 90% can be reached with this new bunching method. The results of a preliminary study of an L-band, 20-MW peak RF... (More)
The increase in efficiency of RF power generation for future large accelerators is considered a high priority issue. The vast majority of the existing commercial high-power RF klystrons operates in the electronic efficiency range between 40% and 55%. Only a few klystrons available on the market are capable of operating with 65% efficiency or above. In this paper, a new method to achieve 90% RF power conversion efficiency in a klystron amplifier is presented. The essential part of this method is a new bunching technique-bunching with bunch core oscillations. Computer simulations confirm that the RF production efficiency above 90% can be reached with this new bunching method. The results of a preliminary study of an L-band, 20-MW peak RF power multibeam klystron for Compact Linear Collider with the efficiency above 85% are presented. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Design optimization, energy efficiency, klystrons, microwave amplifiers, particle accelerators, space charge
in
IEEE Transactions on Electron Devices
volume
62
issue
10
pages
3406 - 3412
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000361684000043
  • scopus:84958115985
ISSN
0018-9383
DOI
10.1109/TED.2015.2464096
language
English
LU publication?
yes
id
64f611d1-ea50-4a1e-b1c9-266b953dfa7f (old id 8058525)
date added to LUP
2015-10-21 08:45:19
date last changed
2017-11-19 03:56:08
@article{64f611d1-ea50-4a1e-b1c9-266b953dfa7f,
  abstract     = {The increase in efficiency of RF power generation for future large accelerators is considered a high priority issue. The vast majority of the existing commercial high-power RF klystrons operates in the electronic efficiency range between 40% and 55%. Only a few klystrons available on the market are capable of operating with 65% efficiency or above. In this paper, a new method to achieve 90% RF power conversion efficiency in a klystron amplifier is presented. The essential part of this method is a new bunching technique-bunching with bunch core oscillations. Computer simulations confirm that the RF production efficiency above 90% can be reached with this new bunching method. The results of a preliminary study of an L-band, 20-MW peak RF power multibeam klystron for Compact Linear Collider with the efficiency above 85% are presented.},
  author       = {Baikov, Andrey Yu. and Marrelli, Chiara and Syratchev, Igor},
  issn         = {0018-9383},
  keyword      = {Design optimization,energy efficiency,klystrons,microwave amplifiers,particle accelerators,space charge},
  language     = {eng},
  number       = {10},
  pages        = {3406--3412},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Electron Devices},
  title        = {Toward High-Power Klystrons With RF Power Conversion Efficiency on the Order of 90%},
  url          = {http://dx.doi.org/10.1109/TED.2015.2464096},
  volume       = {62},
  year         = {2015},
}