Low Energy RIB Spectroscopy Station (LeRIBSS)

The new Low Energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS) is Holifield Radioactive Ion Beam Facilities newly developed experimental endstation, which was conceived and developed by a team of ORNL physicists led by Krzysztof Rykaczewski and Carl Gross. LeRIBSS takes advantage of most HRIBF beam purity developments and combined with up to 100 times more intense beams than previously available in both positive and negative charges states, this powerful new device will allow previously impossible exciting experiments to be performed.

LeRIBSS is located at the bottom of the HRIBF Tandem accelerator. It utilises the high resolution RIB injector magnet to provide high quality and high intensity low-energy RIBs produced at the IRIS-1 (and IRIS-2) ion sources.

The station comprises steering and focussing beam transport elements; beam diagnostic monitors; a miniature ion counting Micro-Channel Plate (MCP) detector (ORNL/UT) or Silicon detector; a new fast-moving tape collector (MTC) (LSU); the Clover Array for Recoil Decay Spectroscopy (CARDS) which can accomodate up to 8 large volume Clarion-type HPGe Clover detectors and/or a fast timing BaF₂ array, high resolution electron detectors, β-counters and a high efficiency β-delayed neutron detector.

LeRIBSS is fully instrumented with the 100-Mega Samples per Second digital data acquisition system Pixie16 (UT/ORNL).

LeRIBSS is a collaboration between Physics Division Oak Ridge National Laboratory, the University of Tennessee, Louisiana State University, Mississippi State University, the Universities Radioactive Ion Beam (UNIRIB) consortium and Vanderbilt University .