Runaway beam studies during disruptions at JET-ILW

0453760 - ÚFP 2016 RIV NL eng J - Článek v odborném periodiku
Reux, C. - Plyusnin, V. - Alper, B. - Alves, D. - Bazylev, B. - Belonohy, E. - Brezinsek, S. - Decker, J. - Devaux, S. - de Vries, P. - Fil, A. - Gerasimov, S. - Lupelli, I. - Jachmich, S. - Khilkevitch, E.M. - Kiptily, V. - Koslowski, R. - Kruezi, U. - Lehnen, M. - Manzanares, A. - Mlynář, Jan - Nardon, E. - Nilsson, E. - Riccardo, V. - Saint-Laurent, F. - Shevelev, A.E. - Sozzi, C.
Runaway beam studies during disruptions at JET-ILW.
Journal of Nuclear Materials. Roč. 463, August (2015), s. 143-149. ISSN 0022-3115. E-ISSN 1873-4820.
[PLASMA-SURFACE INTERACTIONS 21: International Conference on Plasma-Surface Interactions in Controlled Fusion Devices. Kanazawa, 26.05.2014-30.05.2014]
Institucionální podpora: RVO:61389021
Klíčová slova: tokamak * JET * runaway electrons * disruptions * ILW
Obor OECD: Nuclear related engineering
Impakt faktor: 2.199, rok: 2015
http://www.sciencedirect.com/science/article/pii/S0022311514006850

Runaway electrons (RE) during disruptions are a concern for future tokamaks including ITER with its metallic wall. Although RE are rare in spontaneous disruptions with the JET ITER-like Wall (JET-ILW), RE beams up to 380 kA were obtained using massive injection (MGI) of argon in JET-ILW divertor discharges. Entry points into the RE domain defined by operational parameters (toroidal field, argon fraction in MGI) are unchanged but higher RE currents have been obtained inside the JET-ILW MGI-generated RE domain when compared to JET-C. This might be due to the influence of the metallic wall on the current quench plasma. Temperatures of 900 °C have been observed following RE impacts on beryllium tiles. Heat deposition depth of ~2 mm has to be assumed to match the tile cooling time. 3D simulations of the RE energy deposition using the ENDEP/MEMOS codes show that material melting is unlikely with 100 kA RE beams.
Trvalý link: http://hdl.handle.net/11104/0254479