تقرير
UCGretina GEANT4 Simulation of the GRETINA Gamma-Ray Energy Tracking Array
| العنوان: | UCGretina GEANT4 Simulation of the GRETINA Gamma-Ray Energy Tracking Array |
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| المؤلفون: | Riley, L. A., Weisshaar, D., Crawford, H. L., Agiorgousis, M. L., Campbell, C. M., Cromaz, M., Fallon, P., Gade, A., Gregory, S. D., Haldeman, E. B., Jarvis, L. R., Lawson-John, E. D., Roberts, B., Sadler, B. V., Stine, C. G. |
| المصدر: | Nucl. Instrum. Methods Phys. Res. A 1003, 165305 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics Nuclear Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, Nuclear Experiment |
| الوصف: | UCGretina, a GEANT4 simulation of the GRETINA gamma-ray tracking array of highly-segmented high-purity germanium detectors is described. We have developed a model of the array, in particular of the Quad Module and the capsules, that gives good agreement between simulated and measured photopeak efficiencies over a broad range of gamma-ray energies and reproduces the shape of the measured Compton continuum. Both of these features are needed in order to accurately extract gamma-ray yields from spectra collected in in-beam gamma-ray spectroscopy measurements with beams traveling at $v/c \gtrsim 0.3$ at the National Superconducting Cyclotron Laboratory and the Facility for Rare Isotope Beams. In the process of developing the model, we determined that millimeter-scale layers of passive germanium surrounding the active volumes of the simulated crystals must be included in order to reproduce measured photopeak efficiencies. We adopted a simple model of effective passive layers and developed heuristic methods of determining passive-layer thicknesses by comparison of simulations and measurements for a single crystal and for the full array. Prospects for future development of the model are discussed. Comment: 26 pages, 12 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nima.2021.165305 |
| URL الوصول: | http://arxiv.org/abs/2104.09986 |
| رقم الأكسشن: | edsarx.2104.09986 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nima.2021.165305 |
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