TY - GEN
T1 - 14 MeV neutron irradiation effect on critical current and critical magnetic field of Nb3Sn and Nb3Al wires
AU - Nishimura, A.
AU - Takeuchi, T.
AU - Nishijima, S.
AU - Ochiai, K.
AU - Nishijima, G.
AU - Watanabe, K.
AU - Shikama, T.
PY - 2010/9/10
Y1 - 2010/9/10
N2 - To investigate the effect of neutron irradiation on superconducting properties, a collaboration network was established among superconducting material engineering and neutronics fields. Within the framework, irradiation test of Nb3Sn and Nb3Al wires by 14 MeV fusion neutron was planned and carried out at Fusion Neutronics Source in Japan Atomic Energy Agency. After the irradiation, critical current and critical magnetic field were measured with 28 T hybrid magnet at Institute for Metals Research in Tohoku University. The irradiation to 3.52 × 1020 n/m2 showed a slight increase of the critical current of the Nb3Sn wire, and the irradiation to 1.78 × 1021 n/m2 made the critical current appreciably larger. Regarding the critical magnetic field, no clear change was observed. In the case of Nb3Al wire, a sample irradiated to 1.78 × 1021 n/m2 showed no increase of the critical current below 200 A which was the limit of the power supply. As for the critical magnetic field, there was no clear improvement similar to the Nb3Sn wire. The increase of the critical current would be caused by knock-on effect of the fast neutron.
AB - To investigate the effect of neutron irradiation on superconducting properties, a collaboration network was established among superconducting material engineering and neutronics fields. Within the framework, irradiation test of Nb3Sn and Nb3Al wires by 14 MeV fusion neutron was planned and carried out at Fusion Neutronics Source in Japan Atomic Energy Agency. After the irradiation, critical current and critical magnetic field were measured with 28 T hybrid magnet at Institute for Metals Research in Tohoku University. The irradiation to 3.52 × 1020 n/m2 showed a slight increase of the critical current of the Nb3Sn wire, and the irradiation to 1.78 × 1021 n/m2 made the critical current appreciably larger. Regarding the critical magnetic field, no clear change was observed. In the case of Nb3Al wire, a sample irradiated to 1.78 × 1021 n/m2 showed no increase of the critical current below 200 A which was the limit of the power supply. As for the critical magnetic field, there was no clear improvement similar to the Nb3Sn wire. The increase of the critical current would be caused by knock-on effect of the fast neutron.
KW - Critical current
KW - Critical magnetic field
KW - High magnetic field.
KW - Hybrid magnet
KW - Nb3Al
KW - NbSn
KW - Neutron irradiation effect
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U2 - 10.1063/1.3402309
DO - 10.1063/1.3402309
M3 - Conference contribution
AN - SCOPUS:77956300665
SN - 9780735407619
T3 - AIP Conference Proceedings
SP - 255
EP - 262
BT - Advances in Cryogenic Engineering - Transactions of the International Cryogenic Materials Conference, ICMC, Vol. 56
T2 - 2009 Cryogenic Engineering and International Cryogenic Materials Conferences, CEC-ICMC 2009
Y2 - 28 June 2009 through 2 July 2009
ER -