Commissioning of the High Efficiency Total Absorption Spectrometer (HECTOR)

P-process nucleosynthesis occurs in supernovae where the s-process seeds are present, and is responsible for the production of proton-rich nuclei. Photons from SN explosions induce characteristic ($\gamma$,n), ($\gamma$,p), and ($\gamma,\alpha$) reactions. These reactions are typically studied via the inverse reactions. For this purpose, the High Efficiency Total Absorption Spectrometer (HECTOR), a NaI(Tl) summing detector at the University of Notre Dame, was built. The array is designed to make precision cross section measurements for (p,$\gamma$) and ($\alpha,\gamma$) reactions. HECTOR is composed of 16 separate NaI(Tl) crystals and 32 photomultiplier tubes read by a digital data acquisition system, with gain-matching and summing done offline. The efficiency of HECTOR is about 52.7 (2.0)\% for a $^{60}$Co source. The commissioning run for HECTOR was performed via measurements of known resonances in the $^{27}$Al(p,$\gamma$)$^{28}$Si reaction to determine the efficiency of the array. The first results from HECTOR will be presented, as well as future plans with the array.