Design and calibration GODDESS, a particle-$\gamma$ spectrometer

The ability to detect $\gamma$-rays and particles in coincidence is advantageous to performing high-resolution studies of exotic nuclei. It is experimentally challenging to retain detector optimization when combining $\gamma$-ray detectors, which typically need to be in close configuration for efficiency, with particle detectors that require greater target to detector distances to maintain angular resolution. GODDESS (Gammasphere ORRUBA: Dual Detectors for Experimental Structure Studies) --- allows a full implementation of the Oak Ridge Rutgers University Barrel Array within the cavity inside Gammasphere. The ORRUBA detectors consist of position-sensitive silicon strip detectors supplemented with annular silicon strip detectors at forward and backward angles. The full compliment of ORRUBA covers $>$70\% in azimuthal angle over $\sim$15 to 165 deg polar angle, with $\sim$1 deg polar resolution throughout. These specifications allow the use of GODDESS for a wide range of direct reaction studies, such as transfer reactions and inelastic scattering. This talk will focus on design and calibration of GODDESS detectors and the geometric analysis of ORRUBA data.