Abstract In the European strategy, DEMO is the intermediate step between ITER and a commercial fusion power plant. In this framework, one of the goal of DEMO is to be a Breeding Blanket test facility. The Breeding Blanket, which is not present in ITER, is one of the key components for the future deployment of nuclear fusion electricity as it accomplishes the functions of tritium breeding and nuclear to thermal power conversion. Due to time constraints lead by the construction schedule of DEMO, a new strategy to consider in DEMO a “driver” Breeding Blanket that needs limited technological extrapolation has been chosen, while “advanced” Breeding Blanket concepts will be tested in the next phases. In this context, ITER will allow to test technologies to provide relevant contributions in terms of Return of eXperience to the DEMO “driver” Breeding Blanket project by the mean of Test Blanket Modules (TBM) to be installed in different ITER Vacuum Vessel Ports. Among the possible “driver” Breeding Blanket, the Water Cooled Lithium Lead (WCLL) concept comes out. In this framework, a realignment of the DEMO Breeding Blanket and TBM programs has started in 2017, leading to a new TBM development relevant of the DEMO WCLL BB. The WCLL TBM is therefore an essential component in ITER that will provide crucial information for the development of the DEMO “driver” blanket. This paper aims at presenting the development process and design status of WCLL TBM. After recalling the main features of the WCLL TBM, conceptual design analyses are presented and discussed.

中文翻译：

---

用于 ITER 的新型水冷锂铅 TBM 的设计和初步分析

摘要 在欧洲战略中，DEMO 是 ITER 与商业聚变电站之间的中间步骤。在这个框架中，DEMO 的目标之一是成为育种毯测试设施。ITER中没有的育种毯是未来核聚变电部署的关键部件之一，因为它完成了氚育种和核热能转换的功能。由于 DEMO 施工进度的时间限制，在 DEMO 中选择了一种新策略，即在 DEMO 中考虑需要有限技术外推的“驱动”育种毯，而“高级”育种毯概念将在下一阶段进行测试。在这种情况下，ITER 将允许测试技术通过安装在不同 ITER 真空容器端口中的测试毯模块 (TBM) 为 DEMO“驱动程序”育种毯项目提供相关的经验回报方面的贡献。在可能的“驱动程序”育种毯中，水冷锂铅 (WCLL) 概念问世。在此框架中，DEMO 育种毯和 TBM 计划的重新调整已于 2017 年开始，导致与 DEMO WCLL BB 相关的新 TBM 开发。因此，WCLL TBM 是 ITER 的重要组成部分，将为 DEMO“驱动程序”毯的开发提供关键信息。本文旨在介绍WCLL TBM的开发过程和设计现状。在回顾 WCLL TBM 的主要特征后，提出并讨论了概念设计分析。