Minimum Quench Energy and Normal Zone Propagation Velocity of Bronze Processed (Nb,Ti)_3Sn Superconducting Wire with CuNb Reinforcing Stabilizer

摘要

The stability of two kinds of conductors; CuNb/(nb,Ti)_3Sn and Cu/(Nb,Ti)_3Sn has been studied in order to obtain basic informations for high field superconducting magnets using a (Nb,ti)_3Sn conductor reinforced and stabilized with a high strength-high conductivity CuNb in-situ composite. The minimum quench energy (MQE) at I_op=0.95 I_c in Cu/(Nb,Ti)_3Sn is about three times larger than that in CuNb/(Nb,Ti)_3Sn. The normal zone propagation velocity (v_p) is almost the same value for both Cu/(Nb,Ti)_3Sn and cNb/(Nb,Ti)_3Sn, and is independent of the time duration of thermal disturbances.