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AbstractAbstract
[en] The present design for the high-resolution spectrometers at CEBAF requires a front quadrupole (QO) that has a gradient x length of 6.8 T with a good field aperture (1x10/sup -8/ uniformity in gradient) of 16 cm radius. A room temperature design was found too power hungry and interfered with the beam. Engineering and construction of a small cos 2θ magnet was considered to be quite expensive. A Panofsky design was not considered due to the extreme sensitivity of the field quality to errors in conductor placement. A conformal mapping of a window-frame dipole into quadrupole geometry worked well at NSCL. A conceptual design has been developed with the following characteristics; physical length (total)= 1.2 m; iron length= 1.1 m; iron outer dimensions= 54 cm x 80 cm; peak gradient= 6.2 T/m; pole radius= 20 cm; Good field radius= 16 cm; coil peak field= 1.5 T; conductor= 1 mm diameter; Cu/NbTi= 7:1; current= 400 A; turns= 250/quadrant; stored energy= 50 kJ
Primary Subject
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Source
Applied superconductivity conference; San Francisco, CA (USA); 21-25 Aug 1988; CONF-880812--
Record Type
Journal Article
Literature Type
Conference
Journal
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