High efficiency coaxial klystron-like relativistic backward wave oscillator with a premodulation cavity

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3659034· OSTI ID:22047084

Renzhen, Xiao; Yan, Teng; Changhua, Chen; Jun, Sun ^[1]

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1. Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)

The klystron-like relativistic backward wave oscillator (RBWO) combines the transition radiation with Cerenkov radiation and has demonstrated microwave output of high power and high efficiency. The coaxial slow wave structure device can produce microwave with a lower frequency in a smaller cross section. For the purpose of high efficiency, low frequency, and miniaturization, a coaxial klystron-like RBWO with a premodulation cavity is presented. Particle-in-cell simulations show that a microwave with power of 1.15 GW and frequency of 2.1 GHz is generated with conversion efficiency of 48%, whereas for the device with a reflector, the efficiency is 38%.

• OSTI ID: 22047084
• Journal Information: Physics of Plasmas, Vol. 18, Issue 11; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CAVITY RESONATORS
CHERENKOV RADIATION
COMPUTERIZED SIMULATION
EFFICIENCY
GHZ RANGE
GIGAWATT POWER RANGE
KLYSTRONS
MICROWAVE RADIATION
OSCILLATORS
RELATIVISTIC RANGE
TRANSITION RADIATION