Enhancing Materials Irradiations through Thoughtful Shielding (EMITS)

该道尔顿坎布里亚设施（DCF）是唯一的设施，在英国目前能够提供高能量和高电流离子束到样品。这是一个用户设施，使来自世界各地的学术和工业科学家，但主要来自英国，暴露各种样品的高水平辐射损伤。由于核反应堆的组件在其寿命期间将暴露于高水平的辐射损害，因此了解它们对高水平辐射的反应对于核工业的安全管理非常重要。反应堆的组件预计有几十年的运行寿命，但我们需要在更短的时间内开发和评估它们。目前，DCF处的离子束的安全操作受到它们产生的即时辐射的限制-这种辐射在离子束关闭后很快消失，但是如果以最大功率操作DCF的最大离子加速器，则瞬时辐射水平处于对操作员不安全的水平。在这个项目中，新的屏蔽将到位，确保安全运行，即使是在最高的光束功率，我们可以实现。随着束流功率增加这个数量级，我们应该能够在大约1天内安全地将测试组件暴露在反应堆寿命水平的辐射下，从而支持英国核工业部件的快速开发和测试。DCF的离子束能力也将通过增加便携式屏蔽来提高，该屏蔽将用于灵活的逐个分析，案例的基础上，允许广泛的新的研究，既有关安全的已建成的核电厂和发展的新工厂，在未来几十年。

The Dalton Cumbrian Facility (DCF) is the only facility in the UK current able to deliver high energy and high current ion beams onto samples. It is a user facility, enabling both academic and industrial scientists from around the world, but primarily from the UK, to expose various samples to high levels of radiation damage. Since components of a nuclear reactor will be exposed to high levels of radiation damage during their lifetime, understanding their response to high levels of radiation is important for the safe management of the nuclear industry. Components of a reactor are expected to have an operational lifetime of several decades but we need to develop and assess them on much shorter timescales. Currently the safe operation of ions beams at DCF is limited by the prompt radiation they create - this radiation disappears very quickly after the ion beams are turned off but the instantaneous radiation levels, if operating DCF's largest ion accelerator at maximum power, is at a level which is not safe for the operators. In this project, new shielding will be put in place, ensuring safe operation at even the highest beam powers we can achieve. With this order of magnitude increase in beam power, we should be able to safely expose test components to reactor-lifetime levels of radiation in about 1 day, thereby supporting the prompt development and testing of components for the UK nuclear industry.The capability of the ion beams at DCF will also be enhanced by the addition of portable shielding to be used on a flexible case-by-case basis to allow a wide range of new research relevant to both safety of established nuclear plant and for development of new plant, for many decades to come.