Abstract—

An improved prototype of the large-aperture, high-resolution spectrometer−polychromator (the so-called high-etendue spectrometer, HES) has been designed for spectroscopy diagnostics of plasma, in particular, for the Charge-eXchange Recombination Spectroscopy (CXRS) diagnostics at the ITER facility. Ion temperature profiles, poloidal and toroidal plasma rotation velocities, and low-Z impurity densities can be measured using the CXRS technique. The HES is equipped with novel, high-efficiency compact sCMOS cameras with low noise level, wide dynamic range, high quantum efficiency, and almost 100% working cycle. The HES is based on three transmission holographic gratings, which allow its simultaneous operation in three spectral bands: 468 ± 5, 529 ± 5, and 656 ± 6 nm. The main performance characteristics of the cameras, transmission gratings, and the spectrometer as a unit have been measured. It has been established that the characteristics of the developed HES satisfy the requirements for the spectroscopic equipment intended for measurements of the ITER CXRS diagnostic system.

中文翻译：

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配备新型 sCMOS 相机的高集光率高分辨率光谱仪-多色仪，用于托卡马克等离子体光谱

摘要-

大口径、高分辨率光谱仪多色仪（所谓的高集光率光谱仪，HES）的改进原型设计用于等离子体光谱诊断，特别是电荷交换重组光谱（CXRS）诊断在 ITER 设施中。可以使用 CXRS 技术测量离子温度分布、极向和环形等离子体旋转速度以及低Z杂质密度。HES配备了新颖、高效的紧凑型sCMOS相机，具有低噪声水平、宽动态范围、高量子效率和几乎100%的工作周期。HES 基于三个透射全息光栅，允许在三个光谱带中同时运行：468 ± 5、529 ± 5 和 656 ± 6 nm。测量了相机、透射光栅和光谱仪作为一个单元的主要性能特征。已经确定，所开发的 HES 的特性满足用于测量 ITER CXRS 诊断系统的光谱设备的要求。