The Monte Carlo Simulation of a 1-MW Neutral Beam Injector on RFX-Mod

Author

Pilan, Nicola ; Agostinetti, P. ; Grando, L. ; Kiyama, S. ; Rizzolo, A. ; Sakakita, H. ; Tollin, M. ; Valisa, M.

Author_Institution

Consorzio RFX, Assoc. EURATOM-ENEA per la Fusione, Padova, Italy

Volume

40

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

1042

Lastpage

1052

Abstract

The megawatt-level TPE-RX neutral beam injector is planned to be installed on the RFX-mod reversed field pinch (RFP) experiment. To properly integrate the TPE-RX injector on RFX-mod, a 3-D Monte Carlo simulation of the injector has been carried out. The code simulates the charged and neutral particle trajectories from the acceleration grids of the beam source to the RFP plasma. The simulation includes the neutralization stage, the interaction between the accelerated particles and the magnetic field produced by RFX and the residual ion dump (RID), and the interactions between the accelerated beam and the background gas. The simulation has allowed to estimate the neutralizer and RID efficiency and specifications, the geometry of the beam duct between the injector and RFX-mod, and the necessary degree of magnetic screening.

Keywords

Monte Carlo methods; fusion reactors; plasma accelerators; plasma beam injection heating; plasma simulation; reversed field pinch; 3D Monte Carlo simulation; RFX-mod reversed field pinch; TPE-RX injector; accelerated beam; accelerated particles; acceleration grids; background gas; beam duct geometry; beam source; charged particle trajectory; magnetic field; magnetic screening degree; megawatt-level TPE-RX neutral beam injector; neutral particle trajectory; neutralization stage; neutralizer; power 1 MW; residual ion dump efficiency; residual ion dump specifications; reversed field pinch plasma; Acceleration; Ions; Monte Carlo methods; Particle beams; Plasmas; Toroidal magnetic fields; Trajectory; Fusion reactors; particle beam injection;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2169816

Filename

6056572