Design of a multi-sections solenoid for power microwave tubes

Author

Périgo, E.A. ; Faria, R.N. ; Barroso, J.J. ; Motta, C.C.

Author_Institution

Inst. de Pesquisas Energeticas e Nucl., Sao Paulo, Brazil

fYear

2005

fDate

25-28 July 2005

Firstpage

233

Lastpage

236

Abstract

The design of a multi-section solenoid to be used in a power TWT focusing structure is presented in this paper. Considerations about material selection, cooling and magnetic aspects are discussed. From Biot-Savart law, it was possible to obtain an equation that describes the axial magnetic density flux profile of this kind of device taking into account the conductor finite length and the dielectric thickness. The electron paths for a beam of 4 A accelerated with 30 kV were evaluated, using a 3-D particle-in-cell code, under influence of the multi-sections solenoid focusing structure being the magnetic density flux changed from 87.5 to 350 mT.

Keywords

electromagnetism; microwave tubes; solenoids; travelling wave tubes; 30 kV; 3D particle-in-cell code; 4 A; 87.5 to 350 mT; Biot-Savart law; TWT; axial magnetic density flux; conductor finite length; multisections solenoid; power microwave tubes; Biological materials; Conducting materials; Cooling; Dielectric devices; Dielectric materials; Equations; Magnetic devices; Magnetic flux; Magnetic materials; Solenoids;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics, 2005 SBMO/IEEE MTT-S International Conference on

Print_ISBN

0-7803-9341-4

Type

conf

DOI

10.1109/IMOC.2005.1579986

Filename

1579986