Preliminary Simulation of Beam Extraction for the 28 GHz ECR Ion Source

TL;DR

This paper presents a numerical simulation study of the beam extraction system for a 28 GHz ECR ion source, considering magnetic fields and space charge effects, to optimize ion beam extraction.

Contribution

It provides detailed design results of the extraction system for the 28 GHz ECR ion source using 3D ion optics simulation.

Findings

Optimized extraction system design for high-charged ion beams.

Consideration of magnetic field and space charge effects in simulation.

Detailed report on extraction system parameters.

Abstract

The 28 GHz ECR(Electron Cyclotron Resonance) ion source is under development to supply various beams from proton to uranium at RISP(Rare Isotope Science Project). The superconducting magnet system for a 28 GHz ECR ion source consists of four solenoid coils and a saddle type sextupole. To meet the design requirement of ECR ion source, a numerical simulation was accomplished by using the KOBRA3-INP to optimize the extraction system which is the three dimensional ion optics code. The influence of the three dimensional magnetic field and the space charge effect was considered to extract the highly charged ion beam. In this paper, the design results of the extraction system were reported in detail.