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IHEP 98 - 28(In Russian)
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| I.V. Bogdanov, L.M. Vasil'ev, V.I. Gridasov, K.P. Myznikov, V.V. Sytnik , L.M. Tkachenko, P.A. Shcherbakov | ||
| Development of Superconducting Quadrupole with High Gradient on Nb3Sn Base | ||
| Protvino, 1999.- p.16, figs.13, tables 7, refs.:14. | ||
In the frames of collaboration between IHEP and FNAL the design of superconducting quadrupole with high gradient of field have been developed in IHEP. The superconducting material of Nb$_3$Sn with critical density current of 600~A/mm$^2$ in field of 12~T and 4,2~K temperature is used in a two-layer coil. The quadrupole is calculated on the operating gradient of 220~T/m in aperture of 70~mm under working temperature of 4,2~K. The results of geometry optimization, both of cross--section of quadrupole and end parts, are presented. The optimized geometry posesses a high field quality of field and field integral. The field enhancements at the end parts are suppressed down to a level of maximal field in the central cross-section. The arch design is shown to be preferential one to that with uncomplitely keystoned cable. The tolerances on zmanufacturing accuracy are presented.
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