| Title | The impact of the ITER-like wall at JET on disruptions |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | P.C de Vries, G. Arnoux, A. Huber, J. Flanagan, M. Lehnen, V. Riccardo, C. Reux, S. Jachmich, C. Lowry, G. Calabro, D. Frigione, M. Tsalas, N. Hartmann, S. Brezinsek, M. Clever, D. Douai, M. Groth, T.C Hender, E. Hodille, E. Joffrin, U. Kruezi, G.F Matthews, J. Morris, R. Neu, V. Philipps, G. Sergienko, M. Sertoli, JET-EFDA Contributors |
| Journal | Plasma Physics and Controlled Fusion |
| Volume | 54 |
| Number | 12 |
| Pagination | 124032 |
| Abstract | The new full-metal ITER-like wall (ILW) at JET was found to have a profound impact on the physics of disruptions. The main difference is a significantly lower fraction (by up to a factor of 5) of energy radiated during the disruption process, yielding higher plasma temperatures after the thermal quench and thus longer current quench times. Thus, a larger fraction of the total energy was conducted to the wall resulting in larger heat loads. Active mitigation by means of massive gas injection became a necessity to avoid beryllium melting already at moderate levels of thermal and magnetic energy (i.e. already at plasma currents of 2 MA). A slower current quench, however, reduced the risk of runaway generation. Another beneficial effect of the ILW is that disruptions have a negligible impact on the formation and performance of the subsequent discharge. |
| URL | http://stacks.iop.org/0741-3335/54/i=12/a=124032 |
| DOI | 10.1088/0741-3335/54/12/124032 |
| Division | FP |
| Department | PDG |
| PID | 1e0b08fe9823c2528fcb1a3775b20f30 |
| Alternate Title | Plasma Phys. Control. Fusion |
| Label | OA |
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