Precision Magnetic Elements for the SNS Storage Ring.

Danby, G. ; Jackson, J. ; Spataro, C.

Technical Information Center Oak Ridge Tennessee

关键词: Storage rings;    Spallation;    Magnets;    Neutron sources;    Space charge;   

RP-ID  :  DE2004770908

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Magnetic elements for an accumulator storage ring for a 1 GeV Spallation Neutron Source (SNS) have been under design. The accumulation of very high intensity protons in a storage ring requires beam optical elements of very high purity to minimize higher order resonances in the presence of space charge. The parameters of the elements required by the accumulator lattice design have been reported. The dipoles have a 17 cm gap and are 124 cm long. The quadrupoles have a physical length to aperture diameter ratio of 40 cm/21 cm and of 45 cm/31 cm. Since the elements have a large aperture and short length, optimizing the optical effects of magnet ends is the major design challenge.