康普顿散射渡越辐射探测器中δ射线本底的模拟研究
Simulation Studies of Delta-ray Backgrounds in a Compton-Scatter Transition Radiation Detector
摘要：
为了评估拟议的ACCESS天基飞行任务中康普顿散射跃迁辐射探测器对宇宙射线核的响应，使用GEANT 3和外部跃迁辐射发生器程序进行了混合蒙特卡罗模拟。该模拟用于研究高能核引起的δ射线产生的影响，并使TR与δ射线背景的比率最大化。结果表明，考虑到急剧下降的幂律宇宙线谱，康普顿散射跃迁辐射探测器能够测量从硼到铁的原子核，最高可达洛伦兹因子~10 ^5。
英文摘要：
In order to evaluate the response to cosmic-ray nuclei of a Compton-Scatter Transition Radiation Detector in the proposed ACCESS space-based mission, a hybrid Monte Carlo simulation using GEANT3 and an external transition radiation (TR) generator routine was constructed. This simulation was employed to study the effects of delta-ray production induced by high-energy nuclei and to maximize the ratio of TR to delta-ray background. The results demonstrate the ability of a Compton-Scatter Transition Radiation Detector to measure nuclei from boron to iron up to Lorentz factors ~ 10^5 taking into account the steeply falling power-law cosmic ray spectra.
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