Numerical Simulation of a Gyro-BWO with a Helically Corrugated Interaction Region, Cusp Electron Gun and Depressed Collector

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The gyrotron backward wave oscillator (gyro-BWO) is an efficient source of frequency-tunable high-power coherent radiation in the microwave to the terahertz range. It has attracted significant research interest recently due to its potential applications in many areas such as remote sensing, medical imaging, plasma heating and spectroscopy. A gyro-BWO using a helically corrugated interaction region (HCIR) has achieved an even wider frequency tuning range and higher efficiency compared with a conventional gyro-BWO with a smooth-bore cavity. This is due to the existence of an “ideal”eigenwave in the HCIR with a large and constant group velocity when the axial wave number is small.
Original languageEnglish
Title of host publicationNumerical Simulations of Physical and Engineering Processes
EditorsJan Awrejcewicz
Number of pages32
ISBN (Electronic)9789535144274
Publication statusPublished - 26 Sep 2011


  • numerical simulation
  • helically corrugated interaction region
  • cusp electron gun
  • depressed collector

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