Rapid transport current versus high magnetic field characterisation of high-irreversibility type Ⅱ superconductors is important to maximise their critical parameters. HTS conductors are already used to produce insert coils that increase the fields of conventional magnets made from NbTi, (Nb,Ta)_3Sn and Nb_3Al wires. There is fundamental interest in the study of HTS tapes and wires in magnetic fields higher than 21 T, the current limit of superconducting magnets producing a DC field. Such fields can be obtained by using pulse techniques. High critical currents cannot be routinely measured with a continuous current applied at liquid helium, hydrogen or neon temperatures because of thermal and mechanical effects. A newly developed pulsed magnetic field and pulsed current system which allows rapid J_C(B,T) measurements of the whole range of superconducting materials was tested with a multifilamcntary NbTi wire in perpendicular and parallel orientations.
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