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001     878575
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024 7 _ |a 10.1016/j.fusengdes.2019.03.176
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082 _ _ |a 530
100 1 _ |a Gonzalez, W.
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245 _ _ |a Conceptual studies on spectroscopy and radiation diagnostic systems for plasma control on DEMO
260 _ _ |a New York, NY [u.a.]
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520 _ _ |a The roadmap to the realization of fusion energy describes a path towards the development of a DEMO tokamak reactor, which is expected to provide electricity into the grid by the mid of the century (Romanelli, 2013). The DEMO diagnostic and control (D&C) system must provide measurements with high reliability and accuracy, not only constrained by space restrictions in the blanket, but also by adverse effects induced by neutron, gamma radiation and particle fluxes. In view of the concept development for DEMO control, an initial selection of suitable diagnostics has been obtained (Biel et al., 2019). This initial group of diagnostic consists of 6 methods: Microwave diagnostics, thermo-current measurements, magnetic diagnostics, neutron/gamma diagnostics, IR interferometry/polarimetry, and a variety of spectroscopic and radiation measurement systems. A key aspect for the implementation, performance and lifetime assessment of these systems on DEMO, is mainly attributable to their location, that must be well protected, and meet their own set of specific requirements. With this in mind, sightline analysis, space consumption and the evaluation of optical systems are the main assessment tools to obtain a high level of integration, reliability and robustness of all this instrumentation; essential features in future commercial fusion power nuclear plants. In this paper we concentrate on spectroscopic and radiation measurement systems that require sightlines over a large range of plasma regions and inner reactor surfaces. Moreover, this paper outlines the main results and strategies adopted in this early stage of DEMO conceptual design to assess the feasibility of this initial set of diagnostic methods based on sightlines and the integration of these needed for DEMO D&C.
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700 1 _ |a Biel, W.
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700 1 _ |a Mertens, Ph.
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700 1 _ |a Tokar, M.
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700 1 _ |a Marchuk, O.
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700 1 _ |a Linsmeier, Ch.
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773 _ _ |a 10.1016/j.fusengdes.2019.03.176
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856 4 _ |y Published on 2019-04-05. Available in OpenAccess from 2021-04-05.
|u https://juser.fz-juelich.de/record/878575/files/Postprint_Gonzalez_Conceptual%20studies.pdf
856 4 _ |y Published on 2019-04-05. Available in OpenAccess from 2021-04-05.
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