Speaker
Description
The availability of heavy neutron-rich beams is critical to explore this region of weak nuclear binding and to our understanding of the astrophysical r-process responsible for the formation of most of the heavy elements. The CARIBU facility at ATLAS has been providing such neutron-rich beams for over a decade through harnessing the fission products from the spontaneous fission of 252Cf in a large RF gas catcher, mass separating them and delivering them to experiments either at low-energy or reaccelerated to Coulomb barrier energy. This facility has now been upgraded to nuCARIBU which achieves higher yields by replacing the 252Cf fission source of CARIBU by a neutron-generator that produces neutron-induced fission in a thin actinide foil located inside the gas catcher. This maintains the universality of CARIBU in that fission fragments from all species can be extracted effectively while removing the difficulties associated with the 252Cf source and its production. nuCARIBU also now offers extended experimental areas and higher efficiency post-acceleration to enable a broader range of physics.
The nuCARIBU facility and its performance will be presented. In addition, a related new facility currently under commissioning at ATLAS, the N=126 factory, which uses a similar approach to access nuclei produced by multi-nucleon transfer reaction instead of fission to reach even heavier neutron-rich isotopes, will also be presented
This work is supported in part by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357; by the National Science Foundation under Grant No. PHY-2310059; by the University of Notre Dame; and with resources of ANL’s ATLAS facility, an Office of Science National User Facility.
| Contribution category | Experiment |
|---|---|
| Presenter status | Faculty/Staff |