Experimental optimization of beam quality extracted from a duoplasmatron proton ion source

Y K Batygin; I N Draganic; C M Fortgang

doi:10.1063/1.4897150

Experimental optimization of beam quality extracted from a duoplasmatron proton ion source

Rev Sci Instrum. 2014 Oct;85(10):103301. doi: 10.1063/1.4897150.

Authors

Y K Batygin¹, I N Draganic¹, C M Fortgang¹

Affiliation

¹ LANL, Los Alamos, New Mexico 87545, USA.

PMID: 25362385
DOI: 10.1063/1.4897150

Abstract

The LANSCE accelerator facility operates with two independent ion injectors for H(+) and H(-) particle beams. The H(+) ion beam is formed using a duoplasmatron source followed by a 750 keV Cockroft-Walton accelerating column. Formation of an optimal plasma meniscus is an important feature for minimizing beam emittance, and maximizing beam brightness. A series of experiments were performed to find the optimal combination of extraction voltage and extracted current for the H(+) beam. Measurements yielded the best ratio of beam perveance to Child-Langmuir perveance of 0.52 for maximizing beam brightness.