Design and development of field emission based magnetron for industrial applications using conformal finite-difference time-domain particle-in-cell simulations
- Authors
- Li, Ling; Aranganadin, Kaviya; Hsu, Hua-Yi; Lin, Ming-Chieh
- Issue Date
- Mar-2020
- Publisher
- A V S AMER INST PHYSICS
- Citation
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, v.38, no.2, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
- Volume
- 38
- Number
- 2
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/146084
- DOI
- 10.1116/1.5140723
- ISSN
- 1071-1023
- Abstract
- The magnetron is a high-efficiency high-power vacuum tube that generates microwaves based on the interaction of a stream of moving electrons under crossed electric and magnetic fields with a series of open coupled cavity resonators. They are widely used as a low-cost microwave source for industrial heating. Traditionally, a thermionic cathode is used as the electron source and a heater is needed to increase the temperature of the cathode up to about 1000K. In this work, a field emission-based magnetron has been investigated for industrial applications as an easier and more robust configuration. The design and development were performed using a conformal finite-difference time-domain particle-in-cell simulation as implemented in the VSim code. A rising-sun configuration has been optimized and the corresponding operating condition has been determined to achieve an efficiency of up to similar to 80%. The rising-sun magnetron operating at a frequency of 2.45GHz can give an output power of 3kW, serving as a good replacement of existing industrial magnetrons.
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