Gigawatt-class radiation generated by a Ka-band overmoded Cherenkov-type high power millimeter wave generator

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4929869· OSTI ID:22482755

Wu, Dapeng; Shu, Ting; Ju, Jinchuan; Peng, Shengren ^[1]

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1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

Particle simulation and experimental results are presented about a Ka-band overmoded Cherenkov-type high power millimeter wave generator in this paper. The relativistic electron beam with peak current of 8.4 kA was generated by a pulsed power accelerator working at the voltage of 625 kV, which was guided by an axial magnetic field of 1.05 T and transported through the beam-wave interaction structures. After careful calibration, the microwave power radiated in the far field was as high as about 500 MW, with a frequency of 32.1 GHz and a pulse width of 20 ns. The radiation mode was well controlled to be TM{sub 0n} mode.

• OSTI ID: 22482755
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATORS
CALIBRATION
ELECTRIC POTENTIAL
ELECTRON BEAMS
GHZ RANGE 01-100
MAGNETIC FIELDS
MICROWAVE RADIATION
PULSES
RELATIVISTIC RANGE
SIMULATION