A 50 mm bore, 13 tesla superconducting magnet employing a prereacted multifilamentary Nb3Sn conductor

Following the construction of two hybrid magnets, we intend to build up a third hybrid magnet which will produce about 30 T. A prereacted multifilamentary Nb3Sn conductor will be employed for the 12 T superconducting part of the hybrid. As a first step for the project, we have designed, constructed and tested a magnet which consists of 14 double-pancakes made of a prereacted multifilamentary Nb3Sn conductor and a back up coil made of a Nb-Ti conductor. The satisfactory results of the test on the magnet, in which we succeeded to produce 13.4 T, have given us very bright prospects for the 30 T hybrid magnet project