Abstract
Design of a depressed collector system for a quasi-optical gyrotron, which had a severe constraint on the maximum allowable radius of the collector region is outlined. The needs for unwinding of spent beam and for energy sorting could be accommodated by precise control of the magnetic field profile, especially in the collector region. Techniques used for defining and obtaining such profiles; and for dovetailing the profile with the collector geometry are discussed. Results on profiles and electron trajectories are presented, which demonstrate the feasibility of the design. From primary electron trajectories a collector efficiency of up to 68% has been calculated for a three collector design.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Singh, W. Lawson, D. Goutos, W.R. Hix, C.D. Striffler, V.L. Granatstein, and W.W. Destler, “Beam conditioning for electron energy recovery systems in devices employing axisencircling beams,” Int. J. Electronics65, pp. 351–368 (1988).
M.E. Read, A.J. Dudas, W. Lawson, and A. Singh, “Depressed collectors for high power gyrotrons,” IEEE Trans. on Electron Devices17, 1579–1589 (1990).
A. Singh, V.L. Granatstein, C. Casey and W.W. Destler, “Non adiabatic transition of beams in gyrotrons through various magnetic field profiles,” to be published in the Int. J. of Electronics.
A. Singh, G. Hazel, V.L. Granatstein and G. Saraph, “Efficiency enhancement of small-orbit gyrotrons by energy recovery from spent beam,” sent for publication to the Int. J. of Electronics.
A.W. Fliflet, T.A. Hargreaves, W.M. Wallace, R.P. Fischer, and M.L. Barsanti, “Initial operation of a high-power quasi-optical gyrotron,” IEEE Trans. on Plasma Science18, 306–312 (1990).
T.A. Hargreaves, A.W. Fliflet, R.P. Fischer and M.L. Barsanti, “Depressed collector performance on the NRL quasioptical gyrotron,” Conference Digest 15th Int. Conf. on Infrared and Millimeter Waves, Orlando, FL, Dec. 1990, pp. 330–332.
W.B. Herrmannsfeldt, “EGUN — An electron optics and gun design program,” Stanford Linear Accelerator Center, Report-331, Oct. 1988.
Author information
Authors and Affiliations
Additional information
This work is supported by the U.S. Department of Energy.
Rights and permissions
About this article
Cite this article
Singh, A., Granatstein, V.L., Hazel, G. et al. A depressed collector system for a quasi-optical gyrotron with precisely controlled magnetic flux lines. Int J Infrared Milli Waves 12, 323–334 (1991). https://doi.org/10.1007/BF01009406
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01009406