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DOE OSTI · 2530160

Performance characterization of x-ray crystal spectroscopy highly oriented pyrolytic graphite reflectors based on x-ray diffractometry experiments

Lu, Dian [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics; Univ. of Science and Technology of China, Hefei (China)] (ORCID:0000000349206424)·Cheng, Zhifeng [ITER Organization, St. Paul Lez Durance (France)] (ORCID:000000016019399X)·Zhao, Tianlei [Univ. of Science and Technology of China, Hefei (China)]·Yuan, Lingxiong [Univ. of Science and Technology of China, Hefei (China)]·Gao, Lan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000241192825)·Klabacha, Jonathan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)]·Pablant, Novimir [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000166178459)·Tieulent, Raphael [ITER Organization, St. Paul Lez Durance (France)] (ORCID:0000000221065415)·Lin, Zichao [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000224178191)·Jin, Yifei [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000230616709)·Fan, Yu [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics]·Fu, Jia [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000186847517)·Zhang, Hongming [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000343835588)·Lyu, Bo [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000239166230)·Wang, Fudi [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000224627145)
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Abstract

The use of Highly Oriented Pyrolytic Graphite (HOPG) reflectors is often proposed in the design of X-ray Crystal Spectroscopy (XCS) diagnostic systems for the next-generation tokamak devices, including the ITER project. Here, this study introduces an experimental study based on the X-Ray Diffractometry (XRD) method to evaluate the performance of HOPG reflectors. The experimental method provides both the angular responses and the reflectivities of the HOPG reflectors. A demonstrative XRD experiment is conducted, and the details of the experiment are introduced. This method enables precise studies on HOPG reflectors, facilitating the design of XCS diagnostic systems for future tokamaks.

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Lu, Dian [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics; Univ. of Science and Technology of China, Hefei (China)] (ORCID:0000000349206424), Cheng, Zhifeng [ITER Organization, St. Paul Lez Durance (France)] (ORCID:000000016019399X), Zhao, Tianlei [Univ. of Science and Technology of China, Hefei (China)], Yuan, Lingxiong [Univ. of Science and Technology of China, Hefei (China)], Gao, Lan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000241192825), Klabacha, Jonathan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)], Pablant, Novimir [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000166178459), Tieulent, Raphael [ITER Organization, St. Paul Lez Durance (France)] (ORCID:0000000221065415), Lin, Zichao [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000224178191), Jin, Yifei [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000230616709), Fan, Yu [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics], Fu, Jia [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000186847517), Zhang, Hongming [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000343835588), Lyu, Bo [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000239166230), Wang, Fudi [Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics] (ORCID:0000000224627145). 2025-01-29. Performance characterization of x-ray crystal spectroscopy highly oriented pyrolytic graphite reflectors based on x-ray diffractometry experiments. https://doi.org/10.1063/5.0220878

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