Ac Loss and Shielding-Current-Induced Field in a Coated-Conductor Test Magnet for Accelerator Applications under Repeated Excitations

We carried out repeated excitation experiments of a test magnet for accelerator applications of RE-123 coated conductors in order to study its tolerance against ac loss and the stability as well as the reproducibility of the generated magnetic field. The magnet consists of a pair of 4-stacked racetrack coils with an iron return yoke in the low temperature region. It can generate 2.4 T of dipole ma...