The results of the verification of a model of the IVG.1M reactor based on experiments performed in 1990 and 2017 are reported. Startups of the reactor which are associated with its emergence into a critical state and measured values of the power, neutron flux density, and efficiency of the CPS [control and protection system] components were chosen for verification The isotopic composition of the fuel and the beryllium blocks formed by the time the first water-cooled process channels with high-enrichment fuel were extracted from the reactor (2017), was calculated. It was established on the basis of the verification results that the measured parameters agree well with the calculations. Currently, the model of the IVG.1M reactor is used for evaluating the post-conversion characteristics of the reactor as well as the parameters of planned experiments.

中文翻译：

---

IVG.1M 反应堆的中子学模型：开发和临界状态验证

报告了基于 1990 年和 2017 年进行的实验的 IVG.1M 反应堆模型验证结果。选择与其进入临界状态相关的反应堆启动，以及功率、中子通量密度和 CPS [控制和保护系统] 组件效率的测量值进行验证 燃料和铍的同位素组成计算了从反应堆中提取第一个具有高浓缩燃料的水冷工艺通道时形成的块（2017 年）。根据验证结果确定实测参数与计算结果吻合良好。目前，IVG.1M反应堆模型用于评估反应堆的转换后特性以及计划实验的参数。