Transition between hadronic models in Geant4
Transition between hadronic models in Geant4
复制标题
Geant4 中强子模型之间的转换
DOI：
10.1109/nssmic.2009.5401645
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
D. Wright
中科院分区：
文献类型：
--
作者：
A. Ribon;J. Apostolakis;A. Dotti;G. Folger;V. Grichine;Vladimir Ivanchenko;M. Kosov;V. Uzhinsky;D. Wright
中高能应用的输运程序需要模拟宽能量范围内的强子相互作用，通常从MeV到数百GeV。然而，详细的强子模型的适用范围通常跨越更有限的运动学区域。因此，不同的模型相结合，以解决整个频谱的强子碰撞。我们概述了Geant 4中强子模型之间的转变，重点是与LHC实验中的应用相关的配置（物理列表）。ATLAS和CMS合作在强子模型之间的过渡区中报道了量热计观测值的非物理间断。我们已经研究了这些效应的微观起源，并提出了第一次改进的能量依赖性的关键物理观测值在Geant4模拟。
Transportation codes for medium- and high-energy applications need to simulate hadronic interactions in a wide energy range, typically from MeV to hundreds of GeV. Yet the range of applicability of detailed hadronic models usually spans more limited kinematic regions. Therefore, different models are combined in order to address the full spectrum of hadronic collisions. We present an overview of the transitions between hadronic models in Geant4, with the emphasis on configurations (Physics Lists) relevant to applications in LHC experiments. Unphysical discontinuities in calorimeter observables have been reported by ATLAS and CMS collaborations in the transition regions between hadronic models. We have investigated the microscopic origin of these effects, and present the first improvements in the energy dependence of key physical observables in Geant4 simulations.