A High harmonic large orbit gyrotron in THz range

Xiang Li ^*, Jiandong Lang, Yasir Alfadhl and Xiaodong Chen
School of Electronic Engineering and Computer Science
Queen Mary University of London
Mile End Road, London, United Kingdom, E1 4NS,
^* Email: xiang.x.li@qmul.ac.uk

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Abstract: A high-harmonic large orbit gyrotron (LOG) operating in the THz range has been designed and studied. Numerical simulations have shown that the 5^th harmonic oscillation at 283 GHz can be selectively excited by proper choice of the external magnetic field and the electron beam current. The high harmonic operation of LOG is characterised by the considerable reduction of the required external magnetic field strength. The beam-wave interaction, the starting oscillation process and the ohmic loss of the designed LOG are also examined. The analysis procedure and the conclusion can form the basis for the study of even higher harmonics operation.

Keywords: Gyrotron, Harmonic resonance, Large orbit gyrotron (LOG), THz range.

Received: 2014-5-31

Published: 2014-12-30

Acknowledgments: The authors wish to thank the Alliant Techsystems Operations (ATK) for providing MAGIC license. The authors would like to thank the Systems Support staff in the School of Electronic Engineering and Computer Science, Queen Mary University of London for their help in maintaining the computation resources.

Cite this article:
Xiang Li, Jiandong Lang, Yasir Alfadhl and Xiaodong Chen. A High harmonic large orbit gyrotron in THz range[J]. International Journal of Terahertz Science and Technology, 2014, Vol.7, No.4: 181-187.  DOI:10.11906/TST.181-187.2014.12.17

URL: http://www.tstnetwork.org/10.11906/TST.181-187.2014.12.17