The University of Washington polarized ion source
- Department of Physics, Nuclear Physics Laboratory GL-10, University of Washington, Seattle, Washington 98195 (US)
A colliding-beam polarized ion source has been in operation for nuclear physics experiments at the University of Washington tandem-linac facility since late 1987. Thermal beams of polarized atomic hydrogen or deuterium are ionized by charge exchange in collisions with a collinear, fast, neutral cesium beam. Negative ions are extracted, and the polarization symmetry axis is precessed to any desired direction in a crossed-field spin precessor. The design of the cesium-beam system differs from previous sources in that magnetic deflection and focusing are used, and beams of several milliamperes at energies of 40 keV are produced. The source is controlled by a microprocessor-based system which is connected via fiber-optic links to the main linac-control and data-acquisition computers. To date, currents of 1 {mu}A and polarizations in excess of 90% have been produced.
- OSTI ID:
- 7168348
- Report Number(s):
- CONF-890703--
- Journal Information:
- Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:1; ISSN RSINA; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430301* -- Particle Accelerators-- Ion Sources
ALKALI METALS
ANGULAR MOMENTUM
ATOM COLLISIONS
ATOMIC BEAM SOURCES
BEAM EXTRACTION
BEAM TRANSPORT
BEAMS
CESIUM
CHARGED PARTICLES
COLLISIONS
DATA ACQUISITION SYSTEMS
DEUTERIUM IONS
ELECTRODES
ELEMENTS
FOCUSING
HYDROGEN IONS
ION BEAMS
ION COLLISIONS
ION SOURCES
ION-ATOM COLLISIONS
IONS
MAGNETS
METALS
NEUTRAL BEAM SOURCES
NORTH AMERICA
NUCLEAR PHYSICS
PARTICLE PROPERTIES
PHYSICS
POLARIZED BEAMS
SPIN
USA