D'Isa F A, Fassina A, Giudicotti L, Soare S, Tojo H, Ohtani Y, Akimitsu M, Crescenzio G, Girardini M, Slemer A, Grossi A, Mazzarolo E, Pasqualotto R
Consorzio RFX (CNR, ENEA, INFN, University of Padova, Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, Italy.
Università Degli Studi di Padova, Via Marzolo 8, Padova 35131, Italy.
Rev Sci Instrum. 2024 Aug 1;95(8). doi: 10.1063/5.0219396.
The mission of the JT-60SA project is to complement ITER's capabilities by addressing the fundamental physics and engineering challenges necessary to develop a practical and reliable fusion power plant. Diagnostics play a pivotal role in achieving this mission, especially the Thomson Scattering (TS) diagnostic systems developed by a collaborative Japan-EU team. The edge Thomson scattering of JT-60SA is tailored to measure the low field side outer region of the plasma, in particular, to resolve the electron temperature Te and density ne. The collection optics of the edge TS system have a critical role in meeting the required field of view and spatial resolution despite the limited space. This work presents a comprehensive optomechanical design of the optics assembly, whose main features are telecentricity and compactness, highlighting its capabilities. The tests undertaken to verify its performance: focal plane identification, thermal cycle, and magnification, are described.
JT-60SA项目的任务是通过应对开发实用且可靠的聚变发电厂所需的基本物理和工程挑战，来补充国际热核聚变实验堆（ITER）的能力。诊断在实现这一任务中起着关键作用，尤其是由日本-欧盟联合团队开发的汤姆逊散射（TS）诊断系统。JT-60SA的边缘汤姆逊散射专门用于测量等离子体的低场侧外部区域，特别是用于解析电子温度Te和密度ne。尽管空间有限，但边缘TS系统的收集光学器件在满足所需视场和空间分辨率方面起着关键作用。这项工作展示了光学组件的全面光机设计，其主要特点是远心度和紧凑性，并突出了其性能。描述了为验证其性能而进行的测试：焦平面识别、热循环和放大倍率测试。
