arXiv physics/06041982006-04-28physics.ins-detnucl-ex

SNS FNPB 8.9 A中子线弹道导向器的优化设计

Optimization of the Ballistic Guide Design for the SNS FNPB 8.9 A Neutron Line

Takeyasu M. Ito, Christopher B. Crawford, Geoffrey L. Greene

备注：: 21 pages, 13 figures; added a paragraph on existing ballistic guides to respond to referee comments; accepted for publication in Nuclear Inst. and Methods in Physics Research, A
发表信息：: Nucl.Instrum.Meth. A564 (2006) 414-423
DOI：: 10.1016/j.nima.2006.04.070

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摘要：

介绍了SNS基本中子物理束线8.9A线弹道导向器的优化设计。通过仔细调整锥形部分的曲线形状和直线部分的宽度，这种优化导致离开33 m长的导管的中子通量比具有相同长度的直线m=3.5导管增加75%以上。

英文摘要：

The optimization of the ballistic guide design for the SNS Fundamental Neutron Physics Beamline 8.9 A line is described. With a careful tuning of the shape of the curve for the tapered section and the width of the straight section, this optimization resulted in more than 75% increase in the neutron flux exiting the 33 m long guide over a straight m=3.5 guide with the same length.

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