Speaker
Description
The recoil mass separator, SECAR (SEparator for CApture Reactions), recently commissioned at the Facility for Rare Isotope Beams (FRIB), enables direct measurements of proton- and alpha-capture reaction rates on proton-rich nuclei. SECAR will take advantage of radioactive beams produced by FRIB via projectile fragmentation, which are then stopped, and reaccelerated to astrophysical energies at the ReA3 facility. After a reaction occurs by impinging the reaccelerated beam on a hydrogen or helium SECAR target in gaseous or solid form, the reaction recoils are counted at SECAR, where a sequence of magnets and Wien filters separate them from the unreacted beam. The preparation of the SECAR system for accommodating its first science measurements, including the development of alternative ion beam optics and a novel SECAR tuning technique using Machine Learning, along with preliminary results will be presented.
