Accession Number : ADD011820

Title :   Generation of a Modulated IREB (Intense Relativistic Electron Beam) with a Frequency Tunable by a Magnetic Field.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Friedman,M ; Serlin,V

Report Date : 08 Jul 1985

Pagination or Media Count : 24

Abstract : The present invention comprises a device for generating a modulated intense relativistic beam (IREB) with an electronically tunable frequency, comprising: a longitudinally running drift tube; a plurality of gaps in the drift tube including first gap and a second gap, disposed with a predetermined distance 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 an IREB and injecting this 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 running parallel to and within the drift tube and located along a predetermined length between 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.

Descriptors :   *PATENT APPLICATIONS, *ELECTRON BEAMS, *RELATIVITY THEORY, *PARTICLE ACCELERATOR COMPONENTS, AUXILIARY, MAGNETIC FIELDS, ELECTRODES, CAVITIES, FREQUENCY BANDS, INTENSITY, DIAMETERS, ELECTRICITY, TUNING, INVENTIONS, FREQUENCY, PLASMAS(PHYSICS)

Subject Categories : Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE