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Development of a compact bolometer camera concept for investigation of radiation asymmetries at Wendelstein 7-X

W7-X Team 1; Partesotti, G. ; Reimold, F.; Ruhnau, J.; Tsikouras, A.; Kubeneck, D.; Zhang, D.; Geißler, P.
1 Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Power exhaust is one of the central challenges in magnetically confined fusion plasmas. Radiative detachment can be employed to reduce particle and heat fluxes to the divertor target, mitigating divertor damage and erosion. However, accomplishing this for a non-axisymmetric machine such as Wendelstein 7-X is a non-trivial task because of the complex role of transport and plasma-wall interaction in a threedimensional magnetic field topology. We introduce a new bolometer camera design that can be easily installed in multiple toroidal locations and adapted to the required geometry, providing additional spatial coverage. This can be used to locally enhance tomographic capabilities or to resolve spatial variations of the plasma emissivity. By including these non-uniformities in the total radiated power estimate, global power balance measurements can be improved. We model each bolometer camera using ray tracing. We then analyze the forward-modeled detector response to several physically motivated synthetic emission phantoms with respect to its capability to quantify the local average emissivity. The results prove this concept as a promising asset for the investigation of poloidal and toroidal radiated power asymmetries in Wendelstein 7-X. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000175577
Veröffentlicht am 25.10.2024
Originalveröffentlichung
DOI: 10.1063/5.0207762
Scopus
Zitationen: 1
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Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2024
Sprache Englisch
Identifikator ISSN: 0034-6748, 1089-7623
KITopen-ID: 1000175577
HGF-Programm 31.13.02 (POF IV, LK 01) Plasma Heating & Current Drive Systems
Erschienen in Review of Scientific Instruments
Verlag American Institute of Physics (AIP)
Band 95
Heft 10
Seiten Art.-Nr.: 103503
Projektinformation EUROfusion (EU, EU 9. RP, 101052200)
Nachgewiesen in Web of Science
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Scopus
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