he MIT Magnetic Field Shaping Using High Temperature

Superconductors (HTS) for field shaping in stellarators and tokamaks is presented. Design issues relevant to stellarator magnets using single crystal or highly textured YBCO monoliths will be discussed. The excellent properties of YBCO operating at elevated temperatures (> 10 K) will be summarized. High field, cryo-stable, highly complex magnet field topologies can be generated using the techniques discussed in this paper. The diamagnetic properties of the bulk HTS material can be used to provide simple mechanisms for providing field-shaping. Engineering constraints, such as stresses in the superconducting monoliths, support, quench protection, superconducting stability of the monoliths and required external support structure will be described. The limitations imposed by different fusion environments on the performance and lifetime of the HTS monoliths will be reviewed, both for near term experiments a