Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume 48, Issue 9, Pages 3238-3245Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2020.3011806
Keywords
Gyrotrons; Cavity resonators; Superconducting magnets; Magnetic resonance imaging; Inspection; Electron beams; Active real-time imaging system (ARTIS); Gyrotron; nondestructive inspection; sub-terahertz (THz)
Categories
Funding
- Joint Research Project of Korea Research Council for Industrial Science and Technology [13A02135]
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Having the capability of generating superior output power with good spatial pattern at sub-terahertz (THz) region compared to other sources, gyrotron is well suited for nondestructive inspections. The author developed a compact (0.5 x 0.84 x 1.6 m(3)) gyrotron capable of producing 0.2 THz (TE4,2 mode) and 0.4 THz (TE9,3 mode). With reasonable spatial property of the 0.2-THz beam and its long-term stability at high power, nondestructive inspections are successfully demonstrated, especially for soft foreign bodies hidden in food which is hardly detectable with X-ray, in real-time.
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