Construction and testing of A ± 16° superconducting beamline magnet

A prototype of the beamline switching magnets needed for operation of the National Superconducting Cyclotron Lab's 1.6 GeV/c heavy ion beam transport system has been constructed and is undergoing tests. The device features a compact design, as well as good cryogenic and magnetic efficiency. In the operational range of 1.0 to 1.75 T the required field uniformity of ± 0.1% has been obtained. The design current density in the potted coils is 17 kA/cm
²
at 1.75 T, and the magnet has operated at a current density of 20 kA/cm
²
at 1.8 T without a quench.