Abstract
Tests of the performance of a 32-fold segmented HPGe clover detector coupled to a 20-fold segmented Compton-suppression shield, which form a prototype element of the TRIUMF-ISAC Gamma-Ray Escape-Suppressed Spectrometer (TIGRESS), have been made. Peak-to-total ratios and relative efficiencies have been measured for a variety of gamma-ray energies. These measurements were used to validate a GEANT4 simulation of the TIGRESS detectors, which was then used to create a simulation of the full 12-delector array. Predictions of the expected performance of TIGRESS are presented. These predictions indicate that TIGRESS will be capable, for single 1 MeV gamma rays, of absolute detection efficiencies of 17% and 9.4%, and peak-to-total ratios of 54% and 61% for the "high-efficiency" and "optimized peak-to-total" configurations of the array, respectively. (c) 2006 Elsevier B.V. All rights reserved.
Original language | English |
---|---|
Pages (from-to) | 437-445 |
Number of pages | 9 |
Journal | Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment |
Volume | 570 |
Issue number | 3 |
DOIs | |
Publication status | Published - 21 Jan 2007 |
Keywords
- segmented HPGe detectors
- TIGRESS
- Compton suppression
- SPECTROMETER