The paper is focused on the optimal design of Fast Discharge Unit (FDU) for the quench protection of the Toroidal Field (TF) magnets of the Divertor Tokamak Test facility (DTT), an experimental facility under construction in ENEA Frascati Research Centre (Rome, Italy). The FDU is a safety key component that protects the superconducting magnets when a quench is detected through the fast extraction of the energy stored in the magnets by adding a discharge dump resistor (DR) in the TF magnets circuit. A comparison between a fixed DR and a switched variable DR has been implemented by changing resistor parameters and by using multiple current control of the power electronics components (IGCTs).

中文翻译：

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DTT超导环形磁场磁体失超保护设计优化

本文重点介绍了用于偏转器托卡马克测试设施 (DTT) 环形场 (TF) 磁体失超保护的快速放电单元 (FDU) 的优化设计，DTT 是 ENEA 弗拉斯卡蒂研究中心（罗马，罗马）正在建设的实验设施。意大利）。FDU 是一个安全关键组件，可在检测到失超时通过在 TF 磁体电路中添加放电转储电阻 (DR) 快速提取存储在磁体中的能量来保护超导磁体。通过改变电阻参数和使用电力电子元件 (IGCT) 的多重电流控制，对固定 DR 和开关可变 DR 进行了比较。