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Structure of the runaway electron loss during induced disruptions in TEXTOR

Authors :
Sadrilla S. Abdullaev
Long Zeng
Oswald Willi
K. Wongrach
Y. Xu
K. H. Finken
Source :
Physics of plasmas 22(10), 102508-(2015). doi:10.1063/1.4933131
Publication Year :
2015
Publisher :
AIP Publishing, 2015.

Abstract

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.

Details

ISSN :
10897674 and 1070664X
Volume :
22
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi.dedup.....78df16e1c6c0fd3ea77cf05c4c99bc73
Full Text :
https://doi.org/10.1063/1.4933131