The Badhwar‐O'Neill (BON) model has been used for some time to describe the galactic cosmic ray (GCR) environment encountered in deep space by astronauts and sensitive electronics. The most recent version of the model, BON2014, was calibrated to available measurements to reduce model errors for particles and energies of significance to astronaut exposure. Although subsequent studies showed the model to be reasonably accurate for such applications, modifications to the sunspot number (SSN) classification system and a large number of new high‐precision measurements suggested the need to develop an improved and more capable model. In this work, the BON2020 model is described. The new model relies on daily integral flux from the Advanced Composition Explorer Cosmic Ray Isotope Spectrometer (ACE/CRIS) to describe solar activity. For time periods not covered by ACE/CRIS, the updated international SSN database is used. Parameters in the new model are calibrated to available data, which include the new Alpha Magnetic Spectrometer (AMS‐02) and Payload for Antimatter Matter Exploration and Light‐nuclei Astrophysics (PAMELA) high‐precision measurements. It is found that the BON2020 model is a significant improvement over BON2014. Systematic bias associated with BON2014 has been removed. The average relative error of the BON2020 model compared to all available measurements is found to be <1%, and BON2020 is found to be within ±15% of a large fraction of the available measurements (26,269 of 27,646 → 95%).

中文翻译：

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Badhwar-O'Neill 2020 GCR模型

Badhwar-O'Neill（BON）模型已被用来描述宇航员和敏感电子设备在深空遇到的银河宇宙射线（GCR）环境。该模型的最新版本BON2014已针对可用的测量进行了校准，以减少对于宇航员暴露具有重要意义的粒子和能量的模型误差。尽管随后的研究表明该模型对于此类应用是相当准确的，但是对黑子数（SSN）分类系统的修改和大量新的高精度测量表明，有必要开发一种改进的，功能更强大的模型。在这项工作中，描述了BON2020模型。新模型依赖于Advanced Composition Explorer宇宙射线同位素光谱仪（ACE / CRIS）的每日积分通量来描述太阳活动。对于ACE / CRIS未涵盖的时间段，将使用更新的国际SSN数据库。新模型中的参数已根据可用数据进行了校准，其中包括新的Alpha电磁光谱仪（AMS-02）和有效载荷用于反物质探索和光核天体物理学（PAMELA）的高精度测量。发现BON2020模型是对BON2014的重大改进。与BON2014相关的系统偏差已被消除。与所有可用测量值相比，BON2020模型的平均相对误差小于1％，而BON2020在大部分可用测量值的±15％之内（27,646之26,269→95％）。其中包括新的Alpha电磁光谱仪（AMS-02）和有效载荷，用于反物质探索和光核天体物理学（PAMELA）高精度测量。发现BON2020模型是对BON2014的重大改进。与BON2014相关的系统偏差已被消除。与所有可用测量值相比，BON2020模型的平均相对误差小于1％，而BON2020在大部分可用测量值的±15％之内（27,646之26,269→95％）。其中包括新的Alpha电磁光谱仪（AMS-02）和有效载荷，用于反物质探索和光核天体物理学（PAMELA）高精度测量。发现BON2020模型是对BON2014的重大改进。与BON2014相关的系统偏差已被消除。与所有可用测量值相比，BON2020模型的平均相对误差小于1％，而BON2020在大部分可用测量值的±15％之内（27,646之26,269→95％）。