Simulation of a four-stage depressed collector for a W-band gyro-BWO

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Abstract

To improve the overall efficiency of the W-band gyrotron backward wave oscillator (gyro-BWO) currently being built in the University of Strathclyde, an energy recovery system using a four-stage depressed collector was simulated and designed. The spent beam information was exported from the simulation of the gyro-BWO using the 3D PIC code MAGIC. The geometry of the depressed collector was optimized using a genetic algorithm to achieve the optimum overall recovery efficiency for specific parameters of the spent beam. Secondary electron emissions were simulated to investigate the effects of the secondary electrons on the overall recovery efficiency and the backstreaming of the electrons from the collector region.
Original languageEnglish
Title of host publication2010 35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz)
Place of PublicationPiscataway, N.J.
PublisherIEEE
Pages1-2
Number of pages2
ISBN (Print)978-1-4244-6657-3
DOIs
Publication statusPublished - 28 Oct 2010
Event35th International Conference on Infrared, Millimeter and Terahertz Waves - Rome, Italy
Duration: 5 Sep 201010 Sep 2010

Conference

Conference35th International Conference on Infrared, Millimeter and Terahertz Waves
CountryItaly
CityRome
Period5/09/1010/09/10

Keywords

  • backward wave oscillators
  • gyrotrons
  • genetic algorithms

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