Abstract The role of the ITER thermal shield (TS) is to minimize the radiation heat load transferred from the warm components to the superconducting magnet operating at 4.5 K. Fabrication of the TS components is ongoing. Manufacturing of LCTS (Lower Cryostat TS) cylinder and VVTS (Vacuum Vessel TS) sector #6 was completed. The leak tightness of the cooling tubes, the on-site installation feasibility and the quality of the silver coated surfaces are main concerns during the manufacturing. Leak tightness of the cooling tubes is guaranteed by the test and the inspection. The surfaces of the cooling tube inside are inspected visually using the endoscope and the leak tightness has been qualified by the pressure and helium leak test. The on-site installation feasibilities are validated by the preassembly test at the factory. According to the qualified coating process, the TS panels are electro-plated with silver. This paper describes the manufacturing progress and the technical achievements.

中文翻译：

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ITER隔热罩制造进展

摘要 ITER 热屏蔽 (TS) 的作用是最大限度地减少从温暖组件传递到在 4.5 K 下运行的超导磁体的辐射热负荷。 TS 组件的制造正在进行中。LCTS（下低温恒温器 TS）气缸和 VVTS（真空容器 TS）扇区#6 的制造完成。冷却管的密封性、现场安装的可行性和镀银表面的质量是制造过程中的主要问题。冷却管的密封性通过试验和检验得到保证。使用内窥镜对冷却管内表面进行目视检查，通过压力和氦气泄漏测试，密封性合格。现场安装的可行性通过工厂的预组装测试进行验证。TS面板按合格的镀膜工艺电镀银。本文介绍了制造进展和技术成果。