Using multi-spectral imaging and advanced data analysis to improve the tokamak fusion concept.

我在意大利的帕多瓦大学攻读物理学本科和硕士学位。我对核聚变的兴趣始于我的本科论文研究开发卷积神经网络，用于分析SPIDER实验上的红外成像系统数据。然后继续在我的硕士学位通过选修课程，它最终在我的硕士论文中的电子回旋共振（ECR）加热过程中的参数衰减不稳定性的研究在北托卡马克在丹麦技术大学。我的博士项目由约克大学的布鲁斯·利普舒尔茨教授和基兰·吉布森教授以及CCFE的詹姆斯·哈里森博士指导，涉及通过新的多波长成像（MWI）诊断来研究MAST-U托卡马克的偏滤器区域。这种诊断使研究人员能够获得与偏滤器区域的2D亮度图像相对应的11个视频电影，每个视频电影都经过不同波长的过滤。这些曲线对等离子体参数具有不同的依赖性，并且通过将它们与来自其他诊断的数据放在一起，可以重建这些参数。MWI数据将被纳入目前用于确定偏滤器状态的贝叶斯框架，从而提高其能力。处理与反应堆相当的大的废热负荷是向商用聚变托卡马克提供净电源的主要问题之一。MAST-U中偏滤器的磁拓扑结构（其中排气功率朝向表面进行）是灵活的，MWI诊断将有助于确定最合适的偏滤器配置，以优化功率耗散，从而降低峰值功率负载。

I studied for both my undergraduate and master degrees in Physics at the University of Padua, in Italy. My interest in nuclear fusion started during my bachelor thesis research on developing a convolutional neural network for the analysis of infrared imaging system data on the SPIDER experiment. It then continued during my masters degree through elective courses and it culminated in my masters thesis on the study of parametric decay instabilities during Electron Cyclotron Resonance (ECR) heating on the NORTH tokamak at the Technical University of Denmark. My PhD project, supervised by Prof. Bruce Lipschultz and Prof. Kieran Gibson at the University of York and Dr. James Harrison at CCFE, involves the study of the divertor region of the MAST-U tokamak through the new Multi Wavelength-Imaging (MWI) diagnostic. This diagnostic allows researchers to acquire eleven video movies corresponding to 2D brightness images of the divertor region, each filtered for a different wavelength. The profiles have different dependencies on the plasma parameters and by putting them together with the data from the other diagnostics, these parameters can be reconstructed. The MWI data will be integrated in the Bayesian framework currently being used to determine the divertor state, thereby improving its capability. Handling the large exhaust heat loads corresponding to that of a reactor is one of the main problems on the way to commercial fusion tokamaks providing a net power source. The magnetic topology of the divertor (where the exhaust power is carried towards surfaces) in MAST-U is flexible and the MWI diagnostic will help in determining the most appropriate divertor configuration to optimize the dissipation of power and thus reduce peak power loads.