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A Nb/sub 3/Sn dipole magnet reacted after winding

Conference · · IEEE Trans. Magn.; (United States)
OSTI ID:6486420
A 5 cm bore dia., 1-m-long dipole model magnet was constructed by winding un-reacted cable, followed by reaction and epoxy-impregnation. Experience and test results are described on the 1.7 mm dia. internal-tin wire, the eleven-strand flattened cable, fiberglass insulation, and construction of the magnet. Each half of the magnet has two double-pancake-type windings that were reacted in a single operation. The two doublepancakes were then separately vacuum impregnated after soldering the flexible Nb-Ti leads to the Nb/sub 3/Sn conductors. No iron flux return yoke was used. In initial tests a central field of 8.0 T was reached at 4.4 K. However, evidence from training behavior, and 1.8 K tests indicate that premature quenching, rather than critical current of the cable, limited the field intensity. The magnet was reassembled and more rigidly clamped; additional test results are reported.
Research Organization:
Lawrence Berkeley Laboratory, University of California, Berkeley, CA
OSTI ID:
6486420
Report Number(s):
CONF-840937-
Conference Information:
Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG 21:2
Country of Publication:
United States
Language:
English