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Playing the “bad guy” to enhance next-generation safety
Sometimes, cops and robbers is more than just a kid’s game. At the Department of Energy’s national laboratories, researchers are channeling their inner saboteurs to discover vulnerabilities in next-generation nuclear reactors, making sure that they’re as safe as possible before they’re even constructed.
K. H. Finken, R. Jaspers, A. Krämer-Flecken, A. Savtchkov, M. Lehnen, G. Waidmann
Fusion Science and Technology | Volume 47 | Number 2 | February 2005 | Pages 266-273
Technical Paper | TEXTOR: Other Research Areas | doi.org/10.13182/FST05-A706
Articles are hosted by Taylor and Francis Online.
Disruptions remain a major concern for tokamak devices, particularly for large machines. The critical issues are the induced (halo) currents and the resulting forces, the excessive heating of exposed surfaces by the instantaneous power release, and the possible occurrence of highly energetic runaway electrons. The key topics of the investigations on TEXTOR in the recent years concerned (a) the power deposition pattern recorded by a fast infrared scanner, (b) the runaway generation measured by synchrotron radiation in the infrared spectral region, (c) method development for "healing" discharges that are going to disrupt, and (d) massive gas puffing for mitigating the adverse effects of disruptions.