LAUSR

Superconductors enable extremely high field magnets that can be used to develop compact heavy-ion rotating gantries and accelerators. To achieve high fields, a large quantity of superconducting material is required. This results in high costs and difficulties on cooling. An effective design algorithm is necessary to optimize the magnet designs and reduce materials needed. In this article, we propose a new design method for high temperature superconducting (HTS) magnets with combined function for carbon-ion therapy rotating gantries. The new method applies a layer-by-layer design process, which effectively reduces the total volume of superconducting material required and improves field precision. First, the cross section of a multilayer magnet was designed to achieve combined fields of dipole and quadrupole. Based on this, 3-D magnet coil ends were designed, considering mechanical constraints of the HTS coated conductors. Results show that the new design requires 26.3% less material than the existing design with a highly precise field strength and distribution.