Design of an energy recovery system for a gyrotron backward-wave oscillator

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Abstract

To realize the full potential of a gyrotron backward-wave oscillator (gyro-BWO), an energy recovery system was designed using Particle-In-Cell (PIC) simulations and optimized using both a genetic algorithm and PIC simulations. Simulations were carried out to optimize a periodic structure for separation of the spent electron beam and the output radiation produced by a gyro-BWO in the 8.0-9.5 GHz frequency range. The spent electron beam can be collected using a multistage depressed collector. The number and electric potentials of the electrodes were optimized to achieve the best overall recovery efficiency for specific parameters of the spent beam. The 3-D PIC code MAGIC was used to simulate the electrons' trajectories and a genetic algorithm was used to refine the electrode shapes for optimum efficiency.
LanguageEnglish
Pages390-394
Number of pages4
JournalIEEE Transactions on Plasma Science
Volume37
Issue number3
DOIs
Publication statusPublished - Mar 2009

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backward waves
recovery
oscillators
genetic algorithms
electron beams
electron trajectories
electrodes
simulation
cells
accumulators
energy
frequency ranges
output
electric potential
radiation

Keywords

  • depressed collector
  • energy recovery
  • genetic algorithm
  • gyrotron backward-wave oscillator (gyro-BWO)

Cite this

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title = "Design of an energy recovery system for a gyrotron backward-wave oscillator",
abstract = "To realize the full potential of a gyrotron backward-wave oscillator (gyro-BWO), an energy recovery system was designed using Particle-In-Cell (PIC) simulations and optimized using both a genetic algorithm and PIC simulations. Simulations were carried out to optimize a periodic structure for separation of the spent electron beam and the output radiation produced by a gyro-BWO in the 8.0-9.5 GHz frequency range. The spent electron beam can be collected using a multistage depressed collector. The number and electric potentials of the electrodes were optimized to achieve the best overall recovery efficiency for specific parameters of the spent beam. The 3-D PIC code MAGIC was used to simulate the electrons' trajectories and a genetic algorithm was used to refine the electrode shapes for optimum efficiency.",
keywords = "depressed collector, energy recovery, genetic algorithm, gyrotron backward-wave oscillator (gyro-BWO)",
author = "Liang Zhang and W. He and A.W. Cross and A.D.R. Phelps and K. Ronald and C.G. Whyte",
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AU - Zhang, Liang

AU - He, W.

AU - Cross, A.W.

AU - Phelps, A.D.R.

AU - Ronald, K.

AU - Whyte, C.G.

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AB - To realize the full potential of a gyrotron backward-wave oscillator (gyro-BWO), an energy recovery system was designed using Particle-In-Cell (PIC) simulations and optimized using both a genetic algorithm and PIC simulations. Simulations were carried out to optimize a periodic structure for separation of the spent electron beam and the output radiation produced by a gyro-BWO in the 8.0-9.5 GHz frequency range. The spent electron beam can be collected using a multistage depressed collector. The number and electric potentials of the electrodes were optimized to achieve the best overall recovery efficiency for specific parameters of the spent beam. The 3-D PIC code MAGIC was used to simulate the electrons' trajectories and a genetic algorithm was used to refine the electrode shapes for optimum efficiency.

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KW - genetic algorithm

KW - gyrotron backward-wave oscillator (gyro-BWO)

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