The Jet Experiments in Nuclear Structure and Astrophysics (JENSA) Gas Jet Target: Characteristics, Measurements, and Future Plans

Abstract:  Next generation radioactive ion beam facilities are being planned and built across the globe, and with them an incredible new array of exotic isotopes will be available for study. To keep pace with the state of nuclear physics research, both new detector systems and new target systems are needed. The Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas jet target is one of these new target systems, providing a target of light gas that is localized, dense, and pure. The JENSA system involves nearly two dozen pumps, a custom-built industrial compressor, and vacuum chambers designed to incorporate large arrays of both charged-particle and gamma-ray detectors. The JENSA gas jet target was originally constructed at Oak Ridge National Laboratory for testing and characterization, and has now moved to the ReA3 reaccelerated beam hall at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University for use with radioactive beams. Details of the JENSA design, construction, commissioning, and future plans will be given.