High-field installations at the tsukuba magnet laboratories of NRIM

Abstract

We are now developing, and putting into place, several high-field installations, i.e., a 21 T superconducting magnet, a 40 T class hybrid magnet, long-pulse magnets, and several kinds of characteristic high-field magnets, in a new building of the Tsukuba Magnet Laboratories, which will be open next year in Tsukuba. In this article, we describe the present status and the future plans of these high-field installations at our laboratories. The 21.16 T superconducting magnet with 50 mm bore has been used for experiments on coils of oxide superconductors. Last December we have successfully energized the superconducting part of the 40 T class hybrid magnet up to 14.01 T without quenching. We have fabricated a small pulsed coil, made of a CuAg alloy wire with interlayer reinforcement of glass fiber, which could generate 73.4 T non-destructively in a 10 mm bore with a pulse duration of 5 ms.