Abstract

The Flattop critical assembly was built and operated from 1958 through 2004 at the Pajarito Site (Technical Area-18), home to the Los Alamos Critical Experiments Facility. Flattop was disassembled in 2005 and refurbished over the course of 3 years. In 2008, Flattop was installed in the National Criticality Experiments Research Center (NCERC) located in the Device Assembly Facility at the Nevada National Security Site. Startup of Flattop with a uranium core occurred in 2011. This paper details the first 10 years of Flattop operations at NCERC (2011–present).

中文翻译：

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核临界实验的新时代：NCERC 平顶运行的前 10 年

摘要

平顶关键组件于 1958 年至 2004 年在洛斯阿拉莫斯关键实验设施所在的帕加里托站点（技术区 18）建造和运行。Flattop 于 2005 年拆卸，并在 3 年内进行了翻新。2008 年，Flattop 安装在位于内华达州国家安全站点设备组装设施的国家临界实验研究中心 (NCERC)。2011 年启动了带有铀核的 Flattop。本文详细介绍了 NCERC（2011 年至今）Flattop 运营的前 10 年。