Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1985-07-08
1985-12-03
Buczinski, S. C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 50, H01J 2500
Patent
active
H00000060
ABSTRACT:
The present invention comprises a device for generating a modulated intense relativistic electron beam (IREB) with an electronically tunable frequency, comprising: a longitudinally running drift tube; a plurality of gaps in the drift tube including a first gap and a second gap, disposed with a predetermined distance 1 therebetween; and a plurality of cavities, with a first cavity disposed around the drift tube at the location of the first gap, and a second cavity disposed around the drift tube at the location of the second gap. These first and second cavities are provided with volumes and a geometry such as to excite a predetermined frequency band below the plasma frequency for the device. A circuit is provided for generating an IREB and injecting this IREB to propagate within the drift tube with a predetermined plasma frequency. Additionally, a main magnetic field generating means is provided for generating a magnetic field for confining the IREB to a desired beam diameter. The frequency tuning is obtained by providing an auxiliary magnetic field running parallel to and within the drift tube and located only along a predetermined length between the first and second gaps, with this auxiliary magnetic field being tunable to thereby tune the frequencies of excitations in the first and second gaps. Finally, a means is provided at one end of the drift tube for converting the kinetic energy of the IREB into electrical energy.
REFERENCES:
patent: 3398376 (1968-08-01), Hirshfield
Patent Application of Lau et al. Ser. #389,133, filed 6/11/82, "Wide-Band Gyrotron Traveling-Wave Amplifier".
M. Friedman et al. "Conversion of the Energy of Intense Relativistic Electron Beams into High-Power Electrical Pulses" Rev. Sci. Instrum. 54(12) Dec. 1983, pp. 1764-1766.
M. Friedman et al., "Propagation of Intense Relativistic Electron Beams Through Drift Tubes with Perturbed Walls", Physical Review Letters, vol. 50, No. 24, Jun. 13, 1983, pp. 1922-1925.
M. Friedman "Emission of Intense Microwave Radiation from an Automodulated Relativistic Electron Beam", Applied Physics Letters, vol. 26, No. 7, Apr. 1, 1975, pp. 366-368.
M. Friedman et al., "Interaction of a Modulated Intense Relativistic Electron Beam with a Cavity", Appl. Phys. Lett. 44(4), Feb. 15, 1984, pp. 394-395.
M. Friedman et al., "Generation of a Modulated Intense Relativistic Electron Beam with a Frequency Tunable by a Magnetic Field", Rev. Sci. Instrum. 55(7), Jul. 1984, pp. 1074-1076.
Friedman Moshe
Serlin Victor
Beers Robert F.
Buczinski S. C.
Ellis William T.
The United States of America
Wallace Linda J.
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