3D CFDTD PIC simulation study on low-frequency oscillations in a gyrotron

Author

Lin, M.C. ; Smithe, D.N.

Author_Institution

Tech-X Corp., Boulder, CO, USA

fYear

2012

fDate

24-26 April 2012

Firstpage

541

Lastpage

542

Abstract

Low frequency oscillations (LFOs) have been obtained in a 3D time domain simulation for the first time. From our preliminary simulation studies, it is found that not only magnetic compression profile but initial velocity or velocity ratio play an important role in the operation of a MIG electron gun. In addition, the secondary emission effects on the LFOs are also studied. The frequency of LFOs has been estimated by a periodic asymmetric oscillator model, close to the experimental values.

Keywords

electron guns; finite difference time-domain analysis; gyrotrons; oscillators; secondary emission; 3D CFDTD PIC simulation study; 3D time domain simulation; LFO; MIG electron gun; gyrotron; initial velocity ratio; low-frequency oscillation; magnetic compression profile; periodic asymmetric oscillator model; secondary emission effect; Electron traps; Finite difference methods; Gyrotrons; Magnetic domains; Oscillators; Solid modeling; Time domain analysis; Low-frequency oscillations; conformal finite-difference time-domain particle-in-cell; gyrotron; magnetic mirror; magnetron injection gun;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4673-0188-6

Electronic_ISBN

978-1-4673-0187-9

Type

conf

DOI

10.1109/IVEC.2012.6262269

Filename

6262269