The SOLARIS spectrometer

SOLARIS is a dual-mode spectrometer designed for the study of a wide range of transfer and inelastic-scattering reactions at incident beam energies around the Coulomb barrier, to be delivered by the reaccelerated (ReA) beam facility at the National Superconducting Cyclotron Laboratory (NSCL), and in due course the Facility for Rare Isotope Beams. The spectrometer will operate like the HELIOS spectrometer at Argonne National Laboratory, with an on-axis Si array, primarily for studies with beam intensities greater than 5,000 particles per second. It will also be capable of operating with the NSCL Active Target Time Projection Chamber inside the bore of the solenoid, taking advantage of the up to 4-T field. In this latter mode of operation, reactions with beams as weak as a few hundred particles per second are possible. An overview of SOLARIS, the planned implementation of SOLARIS on the ReA6 beamline, and physics opportunities will be presented.