PROPECTS FOR THE USE OF PERMANENT MAGNETS IN FUTURE ACCELERATOR FACILITIES

Permanent magnet based accelerator magnets may offer counterparts for many applications, especially where strong gradients and low power consumption are needed. For example, the development of future light sources based on ultimate storage rings needs to be done in an important energy saving context aiming at a significant reduction in operational costs. After more than two decades of continuous developments in the field of permanent insertion devices, a wealth of knowledge of different issues such as aging effects has been gained. With this technology we now seem ready to leap into the design and construction of advanced accelerator magnets. This talk reviews the status of the permanent magnet technology and the perspectives for its implementations in standard lattice magnets, highlighting both the advantages and the challenges as compared to electromagnetic magnets.