Gyrotron including quasi-optical mode converter

Details Gyrotron including quasi-optical mode converter Gyrotron including quasi-optical mode converter

1991-11-27

1993-11-30

Mis, David

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

331 79, 333 21R, H01J 2500, H03B 901, H01P 116

Patent

active

052668681

ABSTRACT:
There is provided a gyrotron including a quasi-optical mode converter wherein a solid dielectric layer such as silicon carbide for absorbing unnecessary millimeter waves generated by diffraction of the quasi-optical mode converter is arranged in annular shape in the periphery of the quasi-optical mode converter, and millimeter absorption fluid can be supplied to the periphery of the mode converter in a predetermined direction through vacuum barrier walls formed by a dielectric member, thereby efficiently absorbing the diffracted millimeter wave which is the cause of generating heat.

REFERENCES:
patent: 4839561 (1989-06-01), Ito
patent: 4926094 (1990-05-01), Bondeson et al.
International Journal of Electronics--vol. 68, No. 3, Mar. 1990, London GB pp. 461-470. K. Yokoo et al.
13th Int. Conference on IR and MM waves, pp. 123-124--J. A. Casey et al.--Gyrotron Ecrh Transmission System.
Radio Engineering & Electronic Physics, pp. 14-17; S. N. Vlasov et al., Jun. 24, 1974; "Transformation of a Whispering Gallery Mode, Propagating in a Circular Waveguide, into a Beam of Waves".
Int. J. Electronics, 1988, vol. 65, No. 3, pp. 725-732; Osami Wada et al, "Calculation of Radiation from a Quasi-Optical Reflector Antenna for Whispering Gallery Mode".
ORNL/Sub/79-21453/21; "60 GHz Gyrotron Development Program"; J. F. Shively et al; pp. 100-110.

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