We present absolute throughput analysis of several crystals for the Orion High-REsolution X-ray (OHREX) imaging crystal spectrometer using ray tracing and experimental measurements. The OHREX spectrometer is a high-resolution x-ray spectrometer designed to measure spectral line shapes at the Orion laser facility. The spectrometer is fielded with up to two spherical crystals simultaneously covering two independent spectral ranges. Each crystal has a nominal radius of curvature of R = 67.2 cm and is fielded at a nominal Bragg angle of 51.3°. To cover different bands of interest, several different crystals are available, including Ge (111), KAP, and several cuts of quartz, whose resolving power λ/Δλ exceeds 10 000. The calibrated response of the available crystals has previously been reported from measurements at the EBIT-I electron beam ion trap at Lawrence Livermore National Laboratory. Here, we model the absolute throughput of each crystal using ray tracing and verify the results using experimental data for the quartz ($10\overline{1}1$) crystal.

中文翻译：

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Orion高分辨率X射线光谱仪（OHREX）的多个球形晶体的绝对通量校准

我们提供了使用射线追踪和实验测量的Orion高分辨X射线（OHREX）成像晶体光谱仪对几种晶体的绝对通量分析。OHREX光谱仪是高分辨率X射线光谱仪，旨在测量Orion激光设备的光谱线形状。光谱仪配备了多达两个球形晶体，同时覆盖了两个独立的光谱范围。每个晶体的标称曲率半径为R = 67.2 cm，并以51.3°的标称布拉格角分布。以覆盖感兴趣的不同的频带，几个不同的晶体都可用，包括锗（111），KAP，和石英的几个切口，其分辨能力λ /Δ λ超过10000。现有晶体的校准响应以前是在劳伦斯·利弗莫尔国家实验室（Lawrence Livermore National Laboratory）的EBIT-1电子束离子阱处进行测量的。在这里，我们使用射线追踪对每种晶体的绝对通量进行建模，并使用石英的实验数据验证结果（$10\overline{\mathrm{1个}}\mathrm{1个}$） 水晶。