A Multi-Sample Cs-Sputter Negative Ion Source

Conference · Mon Oct 05 04:00:00 EDT 1998

OSTI ID:3739

Alton, G D ^[1]; Ball, J A; Bao, Y; Cui, B; Reed, C A; Williams, C

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1. ORNL

A multi-sample Cs sputter negative-ion source, equipped with a conical-geometry, W-surface-ionizer has been designed and fabricated that permits sample changes without disruption of on-line accelerator operation. Sample changing is effected by actuating an electro-pneumatic control system located at ground potential that drives an air-motor-driven sample-indexing-system mounted at high voltage; this arrangement avoids complications associated with indexing mechanisms that rely on electronic power-supplies located at high potential. In-beam targets are identified by LED indicator lights derived from a fiber-optic, Gray-code target-position sensor. Aspects of the overall source design and details of the indexing mechanism along with operational parameters, ion optics. intensities, and typical emittances for a variety of negative-ion species will be presented in this report.

• Research Organization: Oak Ridge National Lab., TN (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 3739
• Report Number(s): ORNL/CP-101372; KB 04 02 01 0; KB 04 02 01 0
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM DYNAMICS
CESIUM
CONTROL SYSTEMS
DESIGN
HEAVY ION ACCELERATORS
ION SOURCES
OPTICS
POWER SUPPLIES
SAMPLE HOLDERS
TARGETS