The paper presents an overview of the design status of the Radial Neutron Camera (RNC), that, together with the Vertical Neutron Camera, will provide, through reconstruction techniques applied to the measured line-integrated neutron fluxes, the time resolved measurement of the ITER neutron and α-source profile (i.e. neutron emissivity, neutrons emitted per unit time and volume). The RNC is composed of two subsystems, the In-Port RNC and Ex-Port RNC located, respectively, inside and outside the Plug of Equatorial Port #01. The In-Port subsystem is in a more advanced design stage since it has recently undergone the Final Design Review in the ITER procurement process. The paper describes the diagnostic layout, the interfaces, the measurement capabilities and the main challenges in its realization. Prototyping and testing of neutron detectors and electronics components were carried out and led to the choice of the component solutions that can match the environmental and operational constraints in terms radiation hardness, high temperature and electromagnetic compatibility. The performance of the RNC in terms of neutron emissivity measurement capability was assessed through 1D and 2D reconstruction analysis. It is proven that the neutron emissivity can be reconstructed in real-time within the measurement requirements: 10% accuracy, 10 ms time resolution and a/10 (a = plasma minor radius) space resolution.

本文概述了径向中子相机 (RNC) 的设计状态，它将与垂直中子相机一起，通过应用于测量的线积分中子通量的重建技术，提供 ITER 的时间分辨测量中子和 α 源剖面（即中子发射率、每单位时间和体积发射的中子）。RNC由两个子系统组成，In-Port RNC和Ex-Port RNC分别位于赤道口#01插头的内部和外部。In-Port 子系统处于更高级的设计阶段，因为它最近在 ITER 采购过程中进行了最终设计审查。本文描述了诊断布局、接口、测量能力及其实现中的主要挑战。进行了中子探测器和电子元件的原型设计和测试，并选择了能够在辐射硬度、高温和电磁兼容性方面与环境和操作限制相匹配的组件解决方案。通过一维和二维重建分析评估了 RNC 在中子发射率测量能力方面的性能。事实证明，中子发射率可以在测量要求内实时重建：10% 精度、10 ms 时间分辨率和 a/10（a = 等离子体小半径）空间分辨率。通过一维和二维重建分析评估了 RNC 在中子发射率测量能力方面的性能。事实证明，中子发射率可以在测量要求内实时重建：10% 精度、10 ms 时间分辨率和 a/10（a = 等离子体小半径）空间分辨率。通过一维和二维重建分析评估了 RNC 在中子发射率测量能力方面的性能。事实证明，中子发射率可以在测量要求内实时重建：10% 精度、10 ms 时间分辨率和 a/10（a = 等离子体小半径）空间分辨率。