首页|Measuring gross beryllium erosion with visible cameras in JET

Measuring gross beryllium erosion with visible cameras in JET

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Two visible cameras with the same wide-angle view have been used to study the gross beryllium (Be) erosion in JET. An absolutely calibrated spectroscopy system employed in the past for the same object was used to quantitatively infer the camera photon fluxes and also to validate the results. To extract the effective sputtering yield, a simplified method is applied from the quotient of the measured radiances of the D_α and the Be Ⅱ line at 527 nm. The obtained results are in reasonably good agreement with those already published. The main benefit of using cameras is that the global view of the plasma-wall interaction surfaces of the whole vessel is monitored, and the different sources and their wetted areas can be identified and quantified. In addition, the measurement of the particle flux distributions can be used for the validation of three-dimensional erosion-transport codes.

JETerosionberylliumspectroscopycamerasITERsputtering

E. de la Cal、U. Losada、I. Balboa、D. Borodin、I. Borodkina、S. Brezinsek、P. Carvalho、T. Dittmar、D. Douai、A. Huber、V. Huber、J. Karhunen、A. Manzanares、E. Pawelec、J. Romazanov、A. Shaw、S. Silburn、E.R. Solano

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Laboratorio National de Fusion, CIEMAT, Av. Complutense 40, E-28040 Madrid, Spain

CCFE Fusion Assoc., Culham Science Centre, Abingdon, OX14 3DB, United Kingdom

Forschungszentrum Juelich GmbH, Institut fuer Energie- und Klimaforschung-Plasmaphysik, D-52425, Juelich, Germany

CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France

Department of Applied Physics, Aalto University, 02150 Espoo, Finland

Institute of Physics, Univeristy of Opole, Oleska 48, Opole, Poland

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2022

10.1088/1741-4326/ao7c04

Nuclear fusion

Nuclear fusion

SCI
ISSN：0029-5515
年,卷(期)：2022.62(12)