A compact test bed was developed for the critical current evaluation for the High Temperature Superconducting (HTS) tape samples under transverse magnetic field. The test bed is composed of a conduction-cooled superconducting magnet and an insert dewar which HTS short sample is hold in liquid nitrogen. The superconducting magnet, which can provide 3.5T horizontal magnetic field in its vertical...
Superconducting magnets are required to be smaller and to use less electrical energy to generate higher magnetic fields for many applications. As a solution, Zhang et al. [1] suggested a magnetic lens using high-temperature superconducting bulks. However, the focused magnetic field kept decreasing at a rate of about 1.3%/hour even if the current flowing in the outer superconducting coil kept...
High $T_{c}$ superconductor (HTS) could be a key to evolve the magnet technology as it is superior to low $T_{c}$ superconductor (LTS) in terms of the critical current density, critical magnetic field, and critical temperature. REBa$_2$Cu$_3$O$_{7-x}$ (REBCO) coated conductor (CC), which is in common use as the commercially available HTS, is suitable for fabrication of the magnet since it is...
The high temperature superconducting (HTS) magnet has been made progress in high magnetic field with the second generation (2G) HTS wires in recent years. However, the closed-loop operation of the HTS magnet is rarely to be realized at present due to the immature jointing technique. Based on the high n-value of HTS wires, this paper presents a conceptual design of a superconducting magnet...
Large-scale racetrack coils wound with two kinds of REBCO-coated conductors were developed and tested. The two conductors had different critical currents, thicknesses and also allowable delamination stresses respectively for comparison. The total wire length of the fabricated two coils was 978 m and 945 m, and the overall size was 0.57 m x 1.14 m and 0.51 m x 1.08 m. The coils were impregnated...
High field magnets built using low temperature superconductors are currently approaching their upper field limit of 25T or so. Applications of (RE=Y, Gd)BCO coated conductors for the generation of high magnetic fields are increasing sharply, this while (RE)BCO coated conductors themselves are evolving rapidly. This present study simulates the stability of a new magnet made of ring-shaped YBCO...
A 25 T all-superconducting magnet, consisting of a 10 T GdBCO high temperature superconducting (HTS) insert and 15 T low temperature superconducting outer coils, is now in progress at Institute of Electrical Engineering, Chinese Academy of Sciences. Predicting the stress/strain distributions inside the HTS insert during its fabrication and energization accurately is one of the key issues to...
A HTS insert dipole magnet made of REBCO tapes was fabricated at CEA Saclay in 2016. The design of the insert was produced in the framework of the EuCARD High Field Magnet program and its fabrication was continued within a collaboration agreement between CEA-Saclay and Cern. The goal of the HTS insert project is to assess the potential of HTS material to generate a magnetic field of 5.4 T at...