Experiment research of the axis-encircling large-orbit Cusp electronic-gun

Author

Lei, Wenqiang ; Zhao, Junping ; Zhang, Enguan ; Zhao, Jun

Author_Institution

Inst. of Appl. Electron., CAEP, Mianyang

Volume

3

fYear

2008

fDate

21-24 April 2008

Firstpage

1347

Lastpage

1350

Abstract

The magnetic field solenoid is designed to satisfy for the positive-negative cusp magnetic field´s distribution by the experiment and simulation. The cusp magnetic field makes electron doing the axis-encircling large-orbit movement. The current is measured in the thermionic cathode electric gun. An experiment method of measuring the electron velocity ratio is put forward by catching light spot when electron holding some energy shock at a fluorescence glass. By measuring the radius of the light spot, the velocity ratio is calculated in experiment. The error is about 15% compared with experiment and theory result. The experiment is accumulated for optimizing X-band second harmonic gyro-TWT using helical waveguide later.

Keywords

electron guns; gyrotrons; helical waveguides; magnetic fields; solenoids; thermionic cathodes; travelling wave tubes; axis-encircling large-orbit cusp electronic-gun; electron velocity ratio; gyro-TWT; gyrotron traveling wave tube; helical waveguide; magnetic field solenoid; positive-negative cusp magnetic field distribution; thermionic cathode electric gun; Cathodes; Current measurement; Electric shock; Electric variables measurement; Electrons; Energy measurement; Fluorescence; Magnetic field measurement; Solenoids; Velocity measurement; Cusp magnetic field; axis-encircling large-orbit movement; electron velocity ratio; thermionic cathode;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-1879-4

Electronic_ISBN

978-1-4244-1880-0

Type

conf

DOI

10.1109/ICMMT.2008.4540689

Filename

4540689