Final report for NRL (Naval Research Laboratory) Contract N00014-87-C-2523

Technical Report · Sat Apr 01 00:00:00 EST 1989

OSTI ID:7196223

A small signal theory for the harmonic gyroklystron (HGK) has been developed. The theory uses approximate analytical solutions for the cavity fields of vaned magnetron-like cavities. A computer program called SSHGK has been written to calculate the small signal gain, resonant frequency, R/Q Q(0), and related quantities for a given set of cavity dimensions, beam parameters, magnetic field, and cavity loading. Program results indicate that there are broad ranges of input parameters which will produce acceptable small signal gain at the second and third cyclotron harmonics. A representative design has been outlined for 35 GHz operation at the second cyclotron harmonic. An electron gun and magnetic focusing system has been designed to generate the required thin, hollow, axis encircling electron beam. This integrated gun and focusing system has been developed and modeled to easily generate the desired beam trajectories and cross section. This new design produces beams with high ratios of transverse to longitudinal momentum (alpha), and low velocity spreads required by gyro-amplifiers such as the HGK. Using this design, a given gun structure can produce electron beams with adjustable alphas, beam radii, beam currents, annular widths, and velocity spreads just by changing the electrode voltages and magnetic field profile.

• Research Organization: Litton Systems, Inc., San Carlos, CA (USA). Electron Devices Div.
• OSTI ID: 7196223
• Report Number(s): AD-A-216274/1/XAB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
KLYSTRONS
MATHEMATICAL MODELS
AMPLIFIERS
ANALYTICAL SOLUTION
BEAM PRODUCTION
CAVITIES
COMPUTER CODES
CROSS SECTIONS
CYCLOTRONS
ELECTRODES
ELECTRON BEAMS
ELECTRON GUNS
GAIN
HARMONICS
MAGNETIC FIELDS
PROGRESS REPORT
S CODES
TRAJECTORIES
VELOCITY
ACCELERATORS
AMPLIFICATION
BEAMS
CYCLIC ACCELERATORS
DOCUMENT TYPES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
LEPTON BEAMS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
OSCILLATIONS
PARTICLE BEAMS
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)