Symmetry-based design of fragment separator optics

Next-generation high-intensity large acceptance fragment separators require a careful design due to the large high order aberrations induced by the large aperture superconducting magnets needed to collect rare isotopes obtained from a high energy primary heavy-ion beam hitting a target. In this pape...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2007-06, Vol.10 (6), p.064002, Article 064002
Main Authors: Erdelyi, B., Maloney, J., Nolen, J.
Format: Article
Language:English
Subjects:
BEAM SEPARATORS
DESIGN
Design optimization
HEAVY IONS
ION BEAMS
Layouts
Mathematical analysis
OPTICS
PARTICLE ACCELERATORS
Separators
SUPERCONDUCTING MAGNETS
SYMMETRY
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Summary:Next-generation high-intensity large acceptance fragment separators require a careful design due to the large high order aberrations induced by the large aperture superconducting magnets needed to collect rare isotopes obtained from a high energy primary heavy-ion beam hitting a target. In this paper we propose a fragment separator layout based on various symmetries that satisfies the baseline requirements. Analytical calculations based on symmetry theories simplify the design to numerical optimization of a basic cell with only a few magnetic elements. The insight provided by these calculations resulted in the specification of a simple layout with large acceptance, transmission, and resolution. The design method may be easily adapted to project-specific needs. The important effects of energy degraders necessary for full fragment separator design will be addressed in a future publication.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.10.064002