Gyrotron device with adjustable pitch factor

Details Gyrotron device with adjustable pitch factor Gyrotron device with adjustable pitch factor

1986-05-23

1988-12-06

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

372 2, 331 941, 315 5, H01J 2500

Patent

active

047898089

ABSTRACT:
In gyrotron devices, pitch factor and efficiency are directly proportional. When the pitch factor is increased, however, a larger starting current is needed. The available power supply thus limits the pitch factor and subsequently, the efficiency of the device. The present invention is a gyrotron device in which the pitch factor is adjustable. When starting the gyrotron the pitch factor is set to a low level and only a small starting current is required. After the device has been started, the pitch factor can be increased to increase the oscillation efficiency.

REFERENCES:
patent: 3398376 (1968-08-01), Hirshfield
patent: 3463959 (1969-08-01), Jory et al.
patent: 4224576 (1980-09-01), Granatstein et al.
patent: 4393332 (1983-07-01), Symons
patent: 4506190 (1985-03-01), Symons
patent: 4513223 (1985-04-01), Chodorow
Chu, et al., "Methods of Efficiency Enhancement and Scaling for the Gyrotron Oscillator", IEE Transactions on Microwave Theory and Techniques, vol. MTT--28, No. 4, Apr. 1980.
Jory, et al., "Grytron Oscillators for Fusion Heating", Symposium on Heating in Toroidal Plasmas, Grenoble, Mar. 1982.

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