A four-stage depressed collector for a W-band gyro-BWO

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Abstract

An energy recovery system using a four-stage depressed collector was simulated and designed to improve the overall efficiency of the W-band gyrotron backward wave oscillator (gyro-BWO) at the University of Strathclyde. 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 and their effects on the recovery efficiency and the backstreaming of the electrons from the collector region were simulated.
Original languageEnglish
Title of host publication2011 International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherIEEE
Number of pages2
ISBN (Print)9781457705106
DOIs
Publication statusPublished - 15 Dec 2011
EventIRMMW-THz 2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves - Hyatt Regency Downtown, Houston, TX, United States
Duration: 2 Oct 20117 Oct 2011
http://www.irmmw-thz.org/past_conf/index.html

Conference

ConferenceIRMMW-THz 2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves
Abbreviated titleIRMMW-THz 2011
CountryUnited States
CityHouston, TX
Period2/10/117/10/11
Internet address

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Keywords

  • electrodes
  • helium
  • electromagnetic heating
  • kinetic energy
  • electric potential
  • electron beams
  • backward wave oscillators
  • genetic algorithms
  • geometry
  • gyrotrons
  • secondary electron emission

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