Beam saturation in the Munich atomic-beam-source
- LMU, Sektion Physik Universitaet Muenchen, Am Coulombwall 1, D-85748 Garching (Germany)
A Stern-Gerlach atomic beam ion source (ABS) with ECR ionizer and cesium gas-target as charge exchange units is under construction. The goal is to achieve intense negative beams of polarized H{sup -} and D{sup -} of high brightness for injection into the 14 MV MP tandem accelerator with beam intensity of about 2 {mu}A on target. At the entrance of the ECR ionizer the observed intensity of the neutral beam of polarized atoms is 6.4{+-}0.4x10{sup 16} H/sec. Comparing beam transport calculations with beam intensity measurements under various conditions allows for a consistent description of the beam formation in the ABS with respect to degree of dissociation ({approx_equal}80%), peaking ({approx_equal}1.6), beam absorption ({approx_equal}40%) and pumping speeds.
- OSTI ID:
- 21182466
- Journal Information:
- AIP Conference Proceedings, Vol. 421, Issue 1; Conference: 7. international workshop on polarized gas targets and polarized beams, Urbana, IL (United States), 18-22 Aug 1997; Other Information: DOI: 10.1063/1.54972; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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