Počet záznamů: 1
First analysis of the misaligned leading edges of ITER-like plasma facing units using a very high resolution infrared camera in WEST
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SYSNO ASEP 0541110 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název First analysis of the misaligned leading edges of ITER-like plasma facing units using a very high resolution infrared camera in WEST Tvůrce(i) Grosjean, A. (FR)
Corre, Y. (FR)
Dejarnac, Renaud (UFP-V) RID, ORCID
Gaspar, J. (FR)
Gunn, J. P. (FR)
Carpentier-Chouchana, S. (FR)
Courtois, X. (FR)
Delmas, E. (FR)
De Temmerman, G. (FR)
Diez, M. (FR)
Dubus, G. (FR)
Durocher, A. (FR)
Escourbiac, F. (FR)
Firdaouss, M. (FR)
Gerardin, Jonathan (UFP-V) ORCID
Houry, M. (FR)
Pitts, R.A. (FR)
Pocheau, C. (FR)
Tsitrone, E. (FR)Celkový počet autorů 19 Číslo článku 106020 Zdroj.dok. Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 60, č. 10 (2020)Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. AT - Rakousko Klíč. slova heat load ; IR thermography ; ITER-like monoblocks ; leading edge ; plasma facing unit ; very high resolution ; west Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) Způsob publikování Omezený přístup Institucionální podpora UFP-V - RVO:61389021 UT WOS 000571855100001 EID SCOPUS 85092048123 DOI 10.1088/1741-4326/ab9fa6 Anotace Twelve ITER-like plasma-facing units made of tungsten were exposed in the WEST tokamak divertor, with three plasma-facing units (PFUs) significantly overexposed to plasma heat flux: one sharp-edged PFU (vertical misalignment h = 0.8 mm) and two chamfered PFUs (h =0.6 mm and 0.3 mm, respectively). This paper describes the first temperature analysis obtained with a very high spatial resolution infrared camera (pixel size ∼ 0.1 mm) on the misaligned PFU edges and shows the consistency obtained on the parallel heat flux derived from these measurements. The analysis is focused on the hottest areas of the PFU misaligned leading edges, since the temperature detection threshold of the VHR camera is high (Tthreshold,BB ≈ 370 °C). The heat flux parallel to the magnetic field lines is assessed by matching the toroidal temperature profile in the vicinity of the leading edge with 3D finite element modelling. The tungsten emissivity assumed in this study is 0.6, which is consistent with laboratory measurements for damaged PFUs. For the three PFUs studied (with different vertical misalignments, incident angles, geometries), the derived parallel heat flux is similar, and consistent with independent measurements by a Fiber Bragg grating embedded in a graphite PFU at another toroidal location, giving confidence in future experiments using the same settings. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2021 Elektronická adresa https://iopscience.iop.org/article/10.1088/1741-4326/ab9fa6
Počet záznamů: 1