Skip to main content
SHARE
Research Highlight

GODDESS Coupled Detector System Progress

ORNL Image
Diagram of the GODDESS detector system showing the ORRUBA silicon strip detector system mounted inside GAMMASPHERE as well as the new fast ionization chamber

Coincidence measurements of protons and gamma rays produced via the (d,p gamma) transfer reaction with neutron-rich radioactive beams can give high resolution information on single-particle states in these exotic nuclei. This information is needed to understand the evolution of shell structure and neutron capture rates for the r-process in neutron star mergers and in core-collapse supernovae. The GODDESS system is a successful coupling of the 720-channel segmented charged particle detector array ORRUBA (Oak Ridge Rutgers University Barrel Array) with the array of gamma-ray detectors at ANL ATLAS, GAMMASPHERE. New custom end cap Silicon strip detectors for GODDESS were designed, manufactured, tested, and benchmarked for performance. A new compact fast ionization chamber, with a scintillator for fast timing, has also been constructed and tested. Significant progress was recently made with new digital algorithms for the system's resistive detector readout. In addition to its future use with neutron-rich radioactive beams from the CARIBU facility at ANL, GODDESS will be used with proton-rich in-flight radioactive beams that are being developed in an ORNL-led effort.