30 August 1993 Effect of beam geometric deformation on the properties of ECRM
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Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21046K (1993) https://doi.org/10.1117/12.2298668
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom
Abstract
Practical electron beams are subject to various kinds of errors relative to the ideal one. In particular , therewould be eccentric errors due to the deviation between the symmetric axis of the beam and that of the waveguide ;andgeometric deformation errors caused by the non-axisymmetry of the beam cross-section. In order to quantitativelyanalyze the effect of these kinds of geometric deformation errors on practical gyrotron small-signal characteristics ina general sense ,in this paper firstly is proposed the elliptical ring beam geometic deformation model and then is set upthe kinetic theory that describes the interaction between the elliptical ring monoenergetic hollow beam and the TETnnmode travilling wave. Finally,taking the TE01 mode fundamental cyclotron ECRM an example ,is presented the quan- titative relationship between the ECRM coupling coefficient and the geometric errors for elliptical ring beams withsmall eccectricity and small focus -waveguide axes deviation.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yongjian Yu, "Effect of beam geometric deformation on the properties of ECRM", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21046K (30 August 1993); doi: 10.1117/12.2298668; https://doi.org/10.1117/12.2298668
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