Geant4 is the main software tool for Monte Carlo simulations of the calorimeter response in high energy physics (HEP). In this work, we report recent developments of Geant4 physics models, which are available in version 10.6, released in December 2019. The main directions of Geant4 developments are discussed: improvements of physics model accuracy, technical modifications to increase CPU performance, and user interface extensions. It is expected that, due to these developments, the simulated responses of electromagnetic and hadronic calorimeters will be slightly affected; validation results from thin-target as well as calorimeter benchmarks will be discussed. New options are introduced in Geant4 allowing to speed up the simulation. We provide recommendations to users on how they may optimize the simulations of their detectors using the new Geant4 interfaces. We will also discuss the role of Birks corrections on the simulation of calorimeter response.

中文翻译：

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Geant4量热仪模拟的现状

Geant4是用于高能物理（HEP）中量热计响应的蒙特卡罗模拟的主要软件工具。在这项工作中，我们报告了Geant4物理模型的最新发展，该模型在2019年12月发布的10.6版中可用。讨论了Geant4发展的主要方向：物理模型准确性的改进，提高CPU性能的技术修改以及用户界面扩展名。预计由于这些进展，电磁和强子热量计的模拟响应将受到轻微影响；将讨论薄靶以及量热仪基准的验证结果。Geant4中引入了新选项，可以加快仿真速度。我们向用户提供有关如何使用新的Geant4接口优化其探测器仿真的建议。我们还将讨论Birks校正在量热计响应模拟中的作用。