论文标题
在GEANT4模拟中迈向智能散射断层扫描的能量离散化：一种离散的概率方法
Towards energy discretization for muon scattering tomography in GEANT4 simulations: A discrete probabilistic approach
论文作者
论文摘要
在这项研究中，通过试图消除现有粒子发生器的劣势复杂性，我们提出了一种适用于GEANT4模拟中离散能量光谱的离散概率方案。在我们的多键方法中，我们最初计算每个能量箱的离散概率，根据计算目标的不同，我们的数量是灵活的，并且我们完全满足要求离散概率为统一的命令条件。关于GEANT4中的实现，我们构建了一个一维概率网格，该网格由等于能量箱数量的子单元组成，每个单元通过满足统一条件来代表每个能量箱的离散概率。通过统一生成0到1之间的随机数，我们根据相关的生成的随机数分配离散能量，该随机数与概率网格中的特定单元相对应。这种概率方法论不仅允许我们基于蒙特卡洛发生器离散连续的能量光谱，而且还可以独特地访问以不同粒子通量值测量的实验能光谱。 Ergo，我们最初通过在0到8 GEV之间的能量间隔内离散通过CRY发生器获得的MUON能量光谱以及来自BESS光谱仪的测量值，我们确定平均散射角度，散射角的根平均水平，以及使用slabioum coppers copper anderumim and urabium coppers coppers copper，我们确定了平均散射角度，平均散射角度。最终，我们在GEANT4模拟中表达了一种计算策略，该策略使我们能够根据信息源的性质进行验证和修改能量谱，此外除了出色的跟踪速度外。
In this study, by attempting to eliminate the disadvantageous complexity of the existing particle generators, we present a discrete probabilistic scheme adapted for the discrete energy spectra in the GEANT4 simulations. In our multi-binned approach, we initially compute the discrete probabilities for each energy bin, the number of which is flexible depending on the computational goal, and we solely satisfy the imperative condition that requires the sum of the discrete probabilities to be the unity. Regarding the implementation in GEANT4, we construct a one-dimensional probability grid that consists of sub-cells equaling the number of the energy bin, and each cell represents the discrete probability of each energy bin by fulfilling the unity condition. Through uniformly generating random numbers between 0 and 1, we assign the discrete energy in accordance with the associated generated random number that corresponds to a specific cell in the probability grid. This probabilistic methodology does not only permits us to discretize the continuous energy spectra based on the Monte Carlo generators, but it also gives a unique access to utilize the experimental energy spectra measured at the distinct particle flux values. Ergo, we initially perform our simulations by discretizing the muon energy spectrum acquired via the CRY generator over the energy interval between 0 and 8 GeV along with the measurements from the BESS spectrometer and we determine the average scattering angle, the root-mean-square of the scattering angle, and the number of the muon absorption by using a series of slabs consisting of aluminum, copper, iron, lead, and uranium. Eventually, we express a computational strategy in the GEANT4 simulations that grants us the ability to verify as well as to modify the energy spectrum depending on the nature of the information source in addition to the exceptional tracking speed.
