title: Experimental optimization of beam quality extracted from a duoplasmatron proton ion source.
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.
authors.affiliation: LANL, Los Alamos, New Mexico 87545, USA.
authors.forename: Y K
authors.initials: YK
authors.lastname: Batygin
authors.affiliation: LANL, Los Alamos, New Mexico 87545, USA.
authors.forename: I N
authors.initials: IN
authors.lastname: Draganic
authors.affiliation: LANL, Los Alamos, New Mexico 87545, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Fortgang