Speaker
Description
A curved superconducting magnet for proton therapy was built and tested by the Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL). This magnet consists of two Canted-Cosine-Theta (CCT) dipole layers with a clear bore diameter of 290 mm, bend radius of 0.9 m, and magnetic bend angle of 50 degrees. The magnet design will be discussed in the context of a reduced bend angle prototype for a 135 degree bend system with large momentum acceptance beam dynamics. The fabrication of the magnet is then presented with a focus on the challenges associated with curved CCT mandrel manufacturing, winding, and assembly. Finally, the quench training and field quality measurements will be shown from a first test in liquid helium at LBNL. The relevance of these results and future tests are discussed in the context of conduction cooled operation of the full design.
