FIBER-REINFORCED-SUPERCONDUCTORS FOR A 15T-CLASS HIGH-FIELD PULSED MAGNET AND THEIR CONCEPTUAL DESIGN

We are developing a new type of Nb3Sn superconductor with high elastic modulus fibers for the application of high field pulsed superconducting magnets. We call the conductor Fiber-Reinforced-Superconductor (FRS). This paper shows that FRS has great potential for the construction of a 15T-class pulsed magnet, the size of which equals to that in the International Thermonuclear Experimental Reactor(ITER), because each monofilamentary FRS supports hoop stress under operation of the magnet. Short lengths of monofilamentary FRSs using tungsten fiber are prepared by rf-magnetron sputtering. Critical current measurement of them up to 15 T and a uniaxial strain test at 10T have been carried out. The data support the conceptual design of the 15T-class pulsed superconducting magnet using FRSs.