Conveners
Thu-Mo-Or32: Joints for HTS and MgB2 & other Materials for Magnets
- Reinhard Heller (Karlsruhe Institute of Technology)
- Mike Sumption (The Ohio State University)
Recently, we suggested a new bridge-type joint between two REBa2Cu3O7-δ (RE123, RE: Rare Earth such as Gd, Y) conductors using RE’123 (RE’: Rare Earth for low melting point of RE123, such as Yb, Y) bulk by heat treatment with crystal growth at boundary of wire-bulk. We call this method as crystalline joint by melted bulk (CJMB). In the CJMB method, only the bulk is incongruent melting that the...
Abstract— Future HTS high field magnets using multi-tape HTS cables need 10 KA low resistance connections. The connections are needed between the poles of the magnets and at the terminals in a wide operating temperature range, from 77 - 1.9 K.
The EuCARD-2 WP10 Future Magnets collaboration aims at testing HTS-based Roebel cables in an accelerator magnet. Usually, LTS cables are jointed inside...
No-insulation (NI) REBCO superconducting magnets allow very high engineering current density. Therefore, it can achieve very high magnetic field with a compact design. The considerable charging delay time due to current redistribution between turns in a pancake coil, however, limits its application to magnets that do not require frequent field ramps. Since long charging delay is directly...
Ke Han, Vince Toplosky, Robert Walsh, Na Min, Pingli Mao, Yan Xin
Materials used as reinforcement for conductors in high field magnets require both a high capacity for load bearing and a high resistance to deformation under stress; that is a high value for tensile strength and a high modulus of elasticity. In addition, compatibility between the reinforcement materials and the magnet conductor...
Currently, we are conducting a collaborative R&D project to manufacture long MgB2 wires with a high critical current density, for developing helium-free MRI superconducting magnets, which is supported by the Materials and Components Technology Development Program of the Korean Evaluation Institute of Industrial Technology (KEIT), Korea. Herein, we report our progress on the superconducting...
Reliable material property data is crucial for trustworthy simulations in magnet design phase. The variety of tools scientist and engineers utilise for electromagnetic and mechanical design and quench, at least, is large. Centralised effort to distribute material data within communities, like superconductor accelerator magnet R&D community, will result in large time savings. We have started...
A Bi2212-based rectangular wire approach has been developed, with up to 500 MPa stress tolerances and useful current densities for building compact solenoid coils that are more problematic to make with wide HTS tapes, and that need to operate beyond the field and temperature limits of low temperature superconductors. Until now, no method has been shown to achieve a superconducting joint...
