E. Acerbi et al., DESIGN AND EXPERIMENTAL RESULTS OF THE NB3SN DOUBLE INSERT FOR AN 18-TESLA, 100-MM FREE BORE SOLENOID, IEEE transactions on magnetics, 32(4), 1996, pp. 2554-2557
A high field, large free bore (more than 100 mm at 4.2 K) solenoid for
the LASA lab of INFN-Milan is almost completed. The Nb3Sn insert, con
stituted by two coils independently supplied, is designed to provide a
central field in excess of 18 tesla when immersed in the background f
ield of 8 tesla generated by a NbTi solenoid of 550 mm room temperatur
e bore (this last solenoid already being in operation). The constructi
on technique - W & R followed by vacuum impregnation - is described an
d the results of tests and measurements carried out on models wound wi
th the real conductor (a NbSn/Cu Rutherford flat cable) are reported.