Simulation of transient effects in the heavy ion fusion injectors

Author

Chen, Yu-Jiuan ; Hewett, Dennis W.

Author_Institution

Lawrence Livermore Nat. Lab., California Univ., Livermore, CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

718

Abstract

We have used the 2-D PIC code, GYMNOS, to study the transient behaviors in the Heavy Ion Fusion (HIF) injectors. GYMNOS simulations accurately provide the steady state Child-Langmuir current and the beam transient behavior within a planar diode. The simulations of the LBL HIF ESAC injector experiments agree well with the experimental data and EGUN steady state results. Simulations of the nominal EHF injectors have revealed the need to design the accelerating electrodes carefully to control the ion beam current, particularly the ion loss at the end of the bunch as the extraction voltage is reduced

Keywords

beam handling equipment; beam handling techniques; fusion reactor theory and design; ion beams; particle beam diagnostics; plasma inertial confinement; GYMNOS simulations; beam transient behavior; extraction voltage; heavy ion fusion injectors; ion beam current; nominal EHF injectors; steady state Child-Langmuir current; transient behaviors; Acceleration; Diodes; Electrodes; Electrostatics; Ion beams; Space charge; Steady-state; Testing; Valves; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308810

Filename

308810