Development and Study of Nb3Sn Wires With High Specific Heat

Recently, a new type of Nb
₃
Sn conductor was developed, which, by incorporating substances with high specific heat at 2-8 K in a proper design, has demonstrated significant improvement of minimum quench energy (MQE). This approach to improving conductor stability is promising to reduce Nb
₃
Sn magnet training. This paper continues studying this type of conductor. Voltage-current (V-I) tests from 15 to 0 T and voltage-field (V-B) sweeps at various currents were conducted to investigate the influence of increased specific heat on the intrinsic stability. MQE and normal zone propagation velocity (NZPV) were also measured. Finally, a scheme was put forward to introduce new types of substances with not only high specific heat but also high thermal diffusivity to Nb
₃
Sn conductors, which is expected to work more effectively.