One of the main challenges for the construction of DEMO, the first fusion demonstration reactor, is the power exhaust issue. To deal with it, EUROfusion has undertaken the construction of DTT (Divertor Tokamak Test) facility which will be held in Frascati, Italy. It aims to test various divertor models which can be integrated and used under different plasma confinement configurations. The current design of DTT embed 54 divertor cassettes which must be anchored to the vacuum vessel using suitable fixation systems. This paper deals with the initial monotonic load assessment of the fixation system of the Fixation System which must ensure compliance with multiple design requirements. The Remote Handling compatibility is one of the most demanding, since it includes a preloading phase of the divertor necessary to mitigate the shaking of the cassette due to dynamic forces. Moreover, the system must withstand the conspicuous loads acting on the Divertor due to the full or partial loss of plasma confinement (Disruptive Events). Structural verifications through Finite Element Method (FEM) have been performed on the Divertor-Fixation System, considering a set of load combinations, with particular focus on the most demanding case related to Fast-transient Vertical Disruption Event-downward.

中文翻译：

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DTT偏滤器固定系统设计进展

第一个聚变示范堆DEMO建设的主要挑战之一是电力消耗问题。为了解决这个问题，EUROfusion 承担了 DTT（偏滤器托卡马克测试）设施的建设，该设施将在意大利弗拉斯卡蒂举行。它的目的是测试可以在不同等离子体约束配置下集成和使用的各种偏滤器模型。 DTT 的当前设计嵌入了 54 个偏滤器盒，必须使用合适的固定系统将其固定到真空容器上。本文讨论了固定系统固定系统的初始单调载荷评估，该评估必须确保符合多种设计要求。远程处理兼容性是要求最高的兼容性之一，因为它包括偏滤器的预加载阶段，以减轻动态力引起的暗盒晃动所必需的。此外，系统必须承受由于等离子体约束全部或部分丧失（破坏性事件）而作用在偏滤器上的显着负载。通过有限元法 (FEM) 对偏滤器固定系统进行了结构验证，考虑了一组载荷组合，特别关注与快速瞬态垂直破坏事件向下相关的最苛刻的情况。