Study of emittance growth and its control for a low energy H[sup [minus]] beam transport system
- University of Maryland, College Park, Maryland 20742 (United States)
- Superconducting Super Collider Laboratory, Dallas, Texas 75237 (United States)
A compact 6-lens electrostatic quadrupole lens system in conjunction with a short, single einzel lens section has been developed with the aim of transporting a 30 mA, 35 kV H[sup [minus]] beam [normalized beam brightness of about 10[sup 11] A/(m-rad)[sup 2]] over a length of about 30 cm and focusing it into an RFQ. The effect of a neutral background gas on the measurements of the beam from the ion source is studied in order to evaluate reliably the input beam parameters for the lens design. The beam dynamics calculations have been made using simulation codes for typical H[sup [minus]] beam parameters from two different ion sources; a magnetron type and a volume source type. The simulation results show a relatively modest emittance growth, that is within about 50--60% even in the case of an input beam with very small beam radius (1.1 mm) and very large divergence (72 mrad).
- OSTI ID:
- 5341324
- Report Number(s):
- CONF-921145--
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 287:1; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANIONS
BEAM EMITTANCE
BEAM TRANSPORT
BEAMS
BRIGHTNESS
CHARGED PARTICLES
DATA
DIRECTED-ENERGY WEAPONS
ELECTROSTATIC LENSES
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
INFORMATION
ION BEAMS
ION SOURCES
IONS
LENSES
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SIMULATION
SPACE CHARGE
THEORETICAL DATA
Ta
Targets-- (1992-)
WEAPONS