Simulated response characteristics of Gammasphere

The response of the Ge detector array Gammasphere to y-rays, both individually and in cascades, has been modeled with the Monte Carlo code GEANT 3. The effects on the performance of Gammasphere of including an auxiliary detector, the Microball, are investigated. The use of the existing Ge detectors and BGO suppression detectors as a y-ray multiplicity and total y-ray energy spectrometer is explored, and its total energy multiplicity (H, k) response is simulated in detail. The utility of the Hevimet collimators in spectroscopic studies, as opposed to the use of the available (H, k) information, is discussed.