聚变堆多扰动谱极端服役工况高温超导ReBCO-CICC稳定性机理研究

极端复杂多扰动模式下（电磁循环、横向负载、交流损耗及强中子核热）大载流高温超导ReBCO-CICC稳定性机理,是影响未来中国聚变工程实验堆CFETR高温超导内插磁体设计和安全运行的关键难题。目前高温超导ReBCO-CICC稳定性机理缺乏数学模型和作用机制系统研究：（1）拟在10-15MA等离子电流、12-20T背场、20-50kA载流尺度上，发展适用于聚变堆ReBCO-CICC临界特性定标率模型和稳定性计算方法；（2）结合实验得到聚变堆ReBCO-CICC电磁循环、横向负载、交流损耗和中子核热效应与稳定性（温度裕度ΔT、能量裕度ΔE、最小失超能MQE）相互作用规律；（3）建立外场加载和瞬态电流快速变化条件下的ReBCO-CICC稳定性裕度测试平台，研究聚变模拟工况扰动模式（电磁扰动、机械扰动）与稳定性裕度及失超响应变化规律，为未来CFETR中心螺管高温超导内插磁体的安全运行提供科学支持。

The stability mechanism of high current-carrying high-temperature superconducting (HTS) ReBCO-CICC under the condition of complex and multi-disturbance operation of fusion device (electromagnetic cycles, transverse load, AC loss, intense neutron nuclear heat etc.), is one of the key bottlenecks in design and safe operation of HTS magnets in CFETR. Given that systematic research on the stability mechanism and mathematical model of high current-carrying HTS ReBCO-CICC is still in deficiency, the following aspects will be the focus of the research: (1) proposal of a critical characteristic scaling rate model and calculation method on stability for HTS ReBCO-CICC in fusion device under the condition of 10~15MA plasma current, 12~20T back field and 20~50kA current-carrying will be carried out. (2) with experiments, exploring the interaction between stability mechanism (temperature margin Δ T, energy margin ΔE, minimum quenching energy MQE) and cumulative hot spot effect based on transverse load effect of electromagnetic cycles, AC loss and neutron nuclear heat of HTS ReBCO-CICC in fusion device. (3) establishing a stability margin test platform of HTS ReBCO-CICC based on external field load and rapid change of transient current. The variation of disturbance mode of fusion simulation conditions (electromagnetic disturbance, mechanical disturbance) and stability margin and quenching response shall be studied which shall provide scientific support for the safe operation of HTS embedded magnets in CFETR center solenoid in the future.