Superconducting Quadrupole Doublet for the Los Alamos Meson Physics Facility
作者:
J. D. Rogers,
W. V. Hassenzahl,
H. L. Laquer,
J. K. Novak,
R. W. Stokes,
期刊:
Journal of Applied Physics
(AIP Available online 1971)
卷期:
Volume 42,
issue 1
页码: 73-79
ISSN:0021-8979
年代: 1971
DOI:10.1063/1.1659656
出版商: AIP
数据来源: AIP
摘要:
A superconducting quadrupole doublet for beam focusing has been operated with a 30‐kG field at the center of the 30‐cm‐long straight section of the magnets and a 3‐kG/cm field gradient. The magnets used twisted multifilament Nb&sngbnd;Ti superconductor imbedded in a Cu matrix of 0.050‐in. diameter and operate at currents up to 500 A. Each magnet is equipped with a persistent mode superconducting switch. The room‐temperature beam aperture of the magnet‐Dewar system is 15 cm. The focal length of the magnet pair is about 1 m for 500‐MeV pions. The magnets are mounted in a Dewar with thermally compensated supports to minimize motion upon cooling and a soft iron shield reduces external fields to less than 60 G.
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