Design and Fabrication of HTS Coils for a Vector Magnet

We are developing a high-Tc superconducting vector magnet for use in solid-state physics apparatus. The vector magnet features are (a) 1 T peak and two-dimensional magnetic field vector controllable (b) comprising four split magnet units enabling free access in three directions to a sample space (c) cryogen-free conduction-cooled magnet. To obtain a vector controllable magnetic field as high as 1 T using a compact magnet, we adopted a tapered design for split magnet units. We fabricated a test magnet unit with YBCO tape conductors and examined its basic performance. The magnet unit generated the rated magnetic field. This paper describes the vector magnet design, fabrication procedures, and the magnet unit test results.