论文标题
开发实时tritium-in-Water监视器
Development of a real-time tritium-in-water monitor
论文作者
论文摘要
在本文中，我们报告了探测器模块的开发和性能，以设想trip trium-In-In-Water实时活动监视器。监视器基于模块化检测单元，其数字可以根据所需的灵敏度选择。整个系统的设计目的是实现100 \，tritium-in-in-in-in-in-in-dritium-in-in-in-in-in-in-in-water活动的最小检测活动}（\ emph {mda}），这是由eU.建立的极限。理事会指令2013/51/欧洲欧洲债券，用于人类消费的水。相同的系统可用作核电站的实时预电式系统，用于triphium-intium-In-inter-withy with-In-In-in-in-In-In-in Recunteral Acurityal Environmental。第一个检测器模块在Tagus河上的Arrocampo大坝（西班牙阿尔玛拉兹核电站）的排出通道后立即进行了表征，委托和安装。由于单个检测模块的敏感性很高，因此系统需要通过使用主动和被动屏蔽来进行放射性背景缓解技术。我们已经将3.6 \，KBQ/L的\ emph {mda}推算为单个模块，这是该值受宇宙背景限制的。单个模块获得的值已经与实时环境监视和预启动系统兼容。单模型灵敏度的进一步优化将暗示减少模块数量和检测器系统的成本。
In this paper, we report the development and performance of a detector module envisaging a tritium-in-water real-time activity monitor. The monitor is based on modular detection units whose number can be chosen according to the required sensitivity. The full system is being designed to achieve a \emph{Minimum Detectable Activity} (\emph{MDA}) of 100\,Bq/L of tritium-in-water activity which is the limit established by the E.U. Council Directive 2013/51/Euratom for water intended for human consumption. The same system can be used as a real-time pre-alert system for nuclear power plant regarding tritium-in water environmental surveillance. The first detector module was characterized, commissioned and installed immediately after the discharge channel of the Arrocampo dam (Almaraz nuclear power plant, Spain) on the Tagus river. Due to the high sensitivity of the single detection modules, the system requires radioactive background mitigation techniques through the use of active and passive shielding. We have extrapolated a \emph{MDA} of 3.6\,kBq/L for a single module being this value limited by the cosmic background. The obtained value for a single module is already compatible with a real-time environmental surveillance and pre-alert system. Further optimization of the single-module sensitivity will imply the reduction of the number of modules and the cost of the detector system.
