Diagnostic mirrors for ITER: research in the frame of International Tokamak Physics Activity

Litnovsky, A.; Voitsenya, V. S.; Reichle, R.; Walsh, Michael J.; Razdobarin, A. G.; Dmitriev, A. M.; Babinov, N.A.; Marot, L.; Moser, L.; Yan, Rong; Rubel, M.; Widdowson, A.; Moon, S.; Oh, Sungho; An, Younghwa; Shigin, P.; Orlovskiy, I.I.; Vukolov, K.Yu.; Andreenko, E.N.; Krimmer, A.; Kotov, V.; Mertens, Ph.

doi:10.1088/1741-4326/ab1446

Cited by 48 publications

(26 citation statements)

References 44 publications

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“…[184] and sources there in, whereas for diagnostic mirrors please do consider. [185] For details on "Material testing facilities and programs for plasma-facing component," also refer to ref. [186].…”

Section: Discussionmentioning

confidence: 99%

Fusion Materials Development at Forschungszentrum Jülich

Coenen

2020

Adv Eng Mater

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Material issues pose a significant challenge for the design of future fusion reactors. From a historic point of view, the material mix used for the first wall of a fusion reactor has continually evolved, from original steel vessels to carbon and other low-Z materials such as beryllium to tungsten as the primary candidate for a reactor's first wall armor and divertor material. For materials considered for fusion applications, a highly integrated approach is necessary. Resilience against neutron damage, good power exhaust, and oxidation resistance during accidental air ingress are design relevant issues while deciding on new materials or improving upon baseline materials. Neutron-induced effects, e.g., transmutation adding to embrittlement, retention, and changes to thermomechanical properties, are crucial to material performance. In this contribution, the recent progress (2013-2019) in fusion materials development for current and future fusion devices, at Forschungszentrum Jülich GmbH, with activities focussing on advanced materials and their characterization is given. It is a continuation and extension of the work given by Coenen et al.

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Section: Discussionmentioning

confidence: 99%

Fusion Materials Development at Forschungszentrum Jülich

Coenen

2020

Adv Eng Mater

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“…Single-crystalline materials (Rh and Mo) have demonstrated good optical performance under plasma sputtering conditions and are currently considered the leading materials for FMs [ 111 ].…”

Section: Diagnostic Materialsmentioning

confidence: 99%

Materials to Be Used in Future Magnetic Confinement Fusion Reactors: A Review

Alba¹,

Rodríguez²,

Cerdeira³

2022

Materials

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This paper presents the roadmap of the main materials to be used for ITER and DEMO class reactors as well as an overview of the most relevant innovations that have been made in recent years. The main idea in the EUROfusion development program for the FW (first wall) is the use of low-activation materials. Thus far, several candidates have been proposed: RAFM and ODS steels, SiC/SiC ceramic composites and vanadium alloys. In turn, the most relevant diagnostic systems and PFMs (plasma-facing materials) will be described, all accompanied by the corresponding justification for the selection of the materials as well as their main characteristics. Finally, an outlook will be provided on future material development activities to be carried out during the next phase of the conceptual design for DEMO, which is highly dependent on the success of the IFMIF-DONES facility, whose design, operation and objectives are also described in this paper.

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“…В современных токамаках оптические диагностические системы собирают излучаемый плазмой свет с помощью линз, оптоволоконных световодов и вакуумных окон, размещаемых на корпусе рабочей камеры [1]. В строящемся во Франции международном термоядерном реакторе ИТЭР для сбора света из плазмы предполагается использовать внутривакуумные металлические зеркала (так называемые " первые" зеркала) [2]. Зеркала будут установлены в специальных диагностических патрубках на сравнительно небольших расстояниях от плазмы.…”

Section: введение и постановка задачиunclassified

Структура Поверхностного Слоя И Пропускание Света Сапфиром После Распыления В ВЧ Разряде В Смеси H-=sub=-2-=/Sub=--N-=sub=-2-=/Sub=-

Городецкий¹,

Снигирев²,

Маркин³

et al. 2022

Журнал Технической Физики

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Leucosapphire (c-LS) structure and transmission in visible after surface treatment in 90%H2-10%N2 RF discharge are studied. According to AFM, the number of scratches of the mechanically polished surface decreased significantly after removal of about a 300 nm layer (exposure time of 12 h) under unchanged rms of roughness. According to TEM, a two-layer structure formed in the near-surface region consists of an outer 10 nm amorphous layer followed by a crystalline layer of 40–50 nm with a high defect density. The c-LS transmission in the angle of 400–1000 nm either slightly increased or remained unchanged. The demonstrated transmission stability during exposure in 90%H2-10%N2 RF discharge allows us to consider the plasma sputtering as a promising technique for cleaning contaminated windows protecting first mirror of divertor Thomson scattering being developed for ITER divertor.

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Diagnostic mirrors for ITER: research in the frame of International Tokamak Physics Activity

Cited by 48 publications

References 44 publications

Fusion Materials Development at Forschungszentrum Jülich

Fusion Materials Development at Forschungszentrum Jülich

Materials to Be Used in Future Magnetic Confinement Fusion Reactors: A Review

Структура Поверхностного Слоя И Пропускание Света Сапфиром После Распыления В ВЧ Разряде В Смеси H-=sub=-2-=/Sub=--N-=sub=-2-=/Sub=-

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