Intensity improvements of pulsed source of polarized negative hydrogen ions

Abstract

Improvement of beam uniformity by magnetic filter optimization in a Cs-seeded large negative-ion source Rev. Sci. Instrum. 77, 03A515 (2006); Negative ion production in multicusp sources (abstract) Rev. Sci. Instrum. 73, 899 (2002); 10.1063/1.1432462 Measurement of grid heat loading in a negative ion source for producing intense H − ion beams by aperture displacement focusing technique Rev. Sci. Instrum. 72, 3829 (2001);

Siberian Snakes, Figure-8 and Spin Transparency Techniques for High Precision Experiments with Polarized Hadron Beams in Colliders

“…Polarized light ions can be provided by an Atomic Beam Polarized Ion Source (ABPIS) [40][41][42][43]. In these sources, electron-polarized negatively-charged ions are produced by electron-polarized neutral atoms capturing an electron from unpolarized ions through resonant charge exchange.…”

Polarized negative ion source with multiply spherically focusing surface plasma ionizer

“…[3] for a review of the existing sources). For a pulsed ABPIS, the most efficient method was developed at INR, Moscow [5][6][7][8][9]. Polarized hydrogen atoms at thermal energy are injected into an ionizer solenoid with an incident flux of deuterium plasma where polarized protons or negative hydrogen ions are formed due to the quasi-resonant charge-exchange reactions: By using resonant charge exchange ionization, it is possible to have an efficiency of the polarized atom to polarized Htransformation of over 12%.…”