Structure of the runaway electron loss during induced disruptions in TEXTOR
- Institut für Laser- und Plasmaphysik, Heinrich-Heine Universität Düsseldorf, Düsseldorf 40225 (Germany)
- Institut für Energie- und Klimaforschung, Forschungszentrum Jülich GmbH, Jülich 52428 (Germany)
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China)
- Southwestern Institute of Physics, Chengdu 610041 (China)
The loss of runaway electrons during an induced disruption is recorded by a synchrotron imaging technique using a fast infrared CCD camera. The loss is predominantly diffuse. During the “spiky-loss phase”, when the runaway beam moves close to the wall, a narrow channel between the runaway column and a scintillator probe is formed and lasts until the runaway beam is terminated. In some cases, the processed images show a stripe pattern at the plasma edge. A comparison between the MHD dominated disruptions and the MHD-free disruption is performed. A new mechanism of plasma disruptions with the runaway electron generation and a novel model which reproduces many characteristic features of the plasma beam evolution during a disruption is briefly described.
- OSTI ID:
- 22486434
- Journal Information:
- Physics of Plasmas, Vol. 22, Issue 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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