Progress toward a milli-ampere nuclear polarized H/sup -/ source

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6642266

Hershcovitch, A; Alessi, J G; DeVito, B; Kponou, A; Niinikoski, T

A new polarized H/sup -/ source producing currents at the milli-Ampere level was designed and is presently being assembled at BNL. This source is composed of three novel elements which have been developed separately. A cold atomic beam yielded H/sup 0/ fluxes as high as 9.4 x 10/sup 18/ and 4 x 10/sup 19/ atoms/s-sr at accommodator temperatures of 5.8 K and 26 K, respectively. A superconducting solenoid for spin selection designed to have an acceptance angle of 0.1 sr for this atomic beam was developed. A ring magnetron ionizer, which converts H/sup 0/ to polarized H/sup -/ by charge exchange with 200 eV D/sup -/, yielded 500 ..mu..A of H/sup -/ for an estimated H/sup 0/ density of 10/sup 12/ cm/sup -3/. A successful matching and assembling of these elements should result in a milli-Ampere polarized H/sup -/ source.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6642266
• Report Number(s): BNL-39452; CONF-870302-86; ON: DE87007633
• Resource Relation: Conference: Particle accelerator conference, Washington, DC, USA, 16 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HYDROGEN IONS 1 MINUS
ION SOURCES
CHARGE EXCHANGE
DESIGN
EXPERIMENTAL DATA
MICRO AMP BEAM CURRENTS
POLARIZED BEAMS
ANIONS
BEAM CURRENTS
BEAMS
CHARGED PARTICLES
CURRENTS
DATA
HYDROGEN IONS
INFORMATION
IONS
NUMERICAL DATA
640301* - Atomic
Molecular & Chemical Physics- Beams & their Reactions