Constructing HTS coils for practical applications

Practical HTS conductor, combining high Jc and long length, at present tends to be in tape form. We describe how its highly anisotropic Jc(B) dependence, together with the brittle nature of the HTS material affects coil design and construction. The two main coil fabrication techniques, React-and-Wind and Wind-and-React, are reviewed and notable results from the worldwide research effort are presented. In addition we discuss HTS coil application areas and fabrication technique potential. The Oxford University conductor/coil development programme is briefly reviewed, and lastly we outline a project investigating the controllability of HTS coils for electromagnetic maglev and discuss the design of HTS coils for a large-scale demonstrator