Commissioning of the JENSA gas jet target at NSCL

The Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas jet target enables the direct measurement of previously inaccessible reactions with reaccelerated radioactive beams at the National Superconducting Cyclotron Laboratory (NSCL), USA. JENSA is going to be the main target for the recoil separator for capture reactions (SECAR) at the Facility of Rare Isotope Beams (FRIB). Commissioning and first experiments at Oak Ridge National Laboratory (ORNL) showed a highly localized, pure gas target with a density of about $10^{19}$ atoms per square centimeter. Confirming results from recent thickness studies of the JENSA gas jet target at NSCL will be presented as well as preliminary results from a commissioning experiment studying the $^4$He($^{14}$N,p)$^{17}$O reaction at $\sim1.3\,$MeV/u with stable beams provided by the rare isotope beam facility ReA3 at NSCL. This research is supported by the U.S. Department of Energy and the National Science Foundation.