Research on Voltage and Current Transient Process of Foilless Diode for RBWO

Author

Shaofei Huo ; Changhua Chen ; Jun Sun ; Zhimin Song ; Renzhen Xiao ; Wei Song ; Yan Teng

Author_Institution

Northwest Inst. of Nucl. Technol., Xi´an, China

Volume

41

Issue

10

fYear

2013

fDate

Oct. 2013

Firstpage

2763

Lastpage

2768

Abstract

As the impedance of the foilless diode for a relativistic backward wave oscillator and the transmission line of the high-current accelerator are mismatching, a method is brought forward to study the voltage and current transient process of the foilless diode by analyzing the voltage and current wave reflection and superposition. In addition, by theoretical analysis, particle-in-cell numerical simulations and experiment based on the SINUS-881 accelerator, the effects of periodic oscillations of growth rate in the high-voltage pulse´s rising edge applying to the diode from the Tesla-type accelerator and the time when the cathode begins to emit on transient process are discussed. In addition, the characteristics of rising edges of voltage and current are meticulously discerned.

Keywords

backward wave oscillators; cathodes; diodes; microwave generation; numerical analysis; transients; transmission lines; RBWO; SINUS-881 accelerator; Tesla-type accelerator; cathode; current transient process; current wave reflection; foilless diode impedance; high-current accelerator; high-voltage pulse rising edge; particle-in-cell numerical simulations; periodic oscillations; relativistic backward wave oscillator; rising edges; superposition; transmission line; voltage transient process; voltage wave reflection; Cathodes; Current measurement; Impedance; Oscillators; Transient analysis; Voltage measurement; Foilless diode; high-power microwave; transient process; voltage and current;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2274736

Filename

6576210