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Author Karni, Y. ♦ Greenspan, E. ♦ Vujic, J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ISOTOPE AND RADIATION SOURCE TECHNOLOGY ♦ BIOLOGY AND MEDICINE, BASIC STUDIES ♦ NEUTRON CAPTURE THERAPY ♦ BEAM SHAPING ♦ PROTON BEAMS ♦ BRAIN ♦ NEUTRON SOURCES ♦ NEUTRON SOURCE FACILITIES ♦ LITHIUM 7 ♦ BORON 10 ♦ LITHIUM FLUORIDES ♦ DOSE EQUIVALENTS
Abstract A large fraction of the proposals for accelerator-based boron neutron capture therapy (BNCT) facilities consider neutron sources consisting of 2.5-MeV protons impinging on a {sup 7}Li target. Nevertheless, several studies considered accelerator-target concepts offering a significantly harder neutron spectrum. The harder the source neutron spectrum, the thicker the beam-shaping assembly (BSA) needs to be and the smaller the fraction of source neutrons entering the brain will be. However, high-energy protons may generate more neutrons per proton. Whether or not the net outcome will be a reduction in the required proton beam current or power or a simplification in t lie target design depends on the effectiveness of the BSA. A reliable comparison must be based on optimal BSA designs. The trial- and-error approach commonly used to design BSAs may lead to nonoptimal designs and, consequently, to erroneous conclusions on the relative merits of different ion-beam-target-BSA concepts.
ISSN 0003018X
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-12-31
Publisher Place United States
Journal Transactions of the American Nuclear Society
Volume Number 73
Technical Publication No. CONF-951006-


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