Polarized Negative Ion Source with Multiply Sphericaly Focusing Surface Plasma Ionizer

TL;DR

This paper proposes a universal polarized H-/D- ion source design that combines advanced focusing and plasma techniques to achieve high polarization, increased lifetime, and improved efficiency.

Contribution

It introduces a novel ion source design integrating multi-spherical focusing and advanced plasma components for enhanced polarized ion beam production.

Findings

Achieves >90% polarization in ion beams

Suppresses unpolarized ion generation effectively

Improves lifetime and power efficiency of the source

Abstract

It is proposed one universal H-/D- ion source design combining the most advanced developments in the field of polarized ion sources to provide high-current high-brightness ion beams with >90% polarization and improved lifetime, reliability, and power efficiency. The new source utilizes high-efficiency resonant charge-exchange ionization of polarized neutral atoms by negative ions generated by cesiated surface-plasma interactions via a multi-spherical negative ion focusing element. Multi-spherical focusing of the negative ions strongly suppresses the parasitic generation of unpolarized H-/D- ions. By incorporating new and novel designs for the dissociator and plasma generator in parallel with the multi-spherical focusing the design can suppress adsorption and depolarization of particles from the polarized beam greatly improving performance over current concepts.