تقرير
Geant4 Modeling of a Cerium Bromide Scintillator Detector for the IMPRESS CubeSat Mission
| العنوان: | Geant4 Modeling of a Cerium Bromide Scintillator Detector for the IMPRESS CubeSat Mission |
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| المؤلفون: | Setterberg, William, Glesener, Lindsay, Egziabher, Demoz Gebre, Sample, John G., Smith, David M., Caspi, Amir, Faulkner, Allan, Clemmer, Lestat, Hildebrandt, Kate, Skinner, Evan, Greathouse, Annsley, Kozic, Ty, Wieber, Meredith, Savadogo, Mansour, Nightingale, Mel, Knuth, Trevor |
| المصدر: | Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 121813M (31 August 2022) |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Space Physics |
| الوصف: | Solar flares are some of the most energetic events in the solar system and can be studied to investigate the physics of plasmas and stellar processes. One interesting aspect of solar flares is the presence of accelerated (nonthermal) particles, whose signatures appear in solar flare hard X-ray emissions. Debate has been ongoing since the early days of the space age as to how these particles are accelerated, and one way to probe relevant acceleration mechanisms is by investigating short-timescale (tens of milliseconds) variations in solar flare hard X-ray flux. The Impulsive Phase Rapid Energetic Solar Spectrometer (IMPRESS) CubeSat mission aims to measure these fast hard X-ray variations. In order to produce the best possible science data from this mission, we characterize the IMPRESS scintillator detectors using Geant4 Monte Carlo models. We show that the Geant4 Monte Carlo detector model is consistent with an analytical model. We find that Geant4 simulations of X-ray and optical interactions explain observed features in experimental data, but do not completely account for our measured energy resolution. We further show that nonuniform light collection leads to double-peak behavior at the 662 keV $^{137}$Cs photopeak and can be corrected in Geant4 models and likely in the lab. Comment: 12 pages, 9 figures. SPIE 2022 Astronomical Telescopes and Instrumentation proceedings paper |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1117/12.2628984 |
| URL الوصول: | http://arxiv.org/abs/2210.17056 |
| رقم الأكسشن: | edsarx.2210.17056 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1117/12.2628984 |
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