Energy deposition and radial decay of runaway electrons in a disruption at TEXTOR

被引：13

作者：

Forster, M. ^{[1
]}

Finken, K. H. ^{[1
]}

Lehnen, M. ^{[2
]}

Linke, J. ^{[3
]}

Schweer, B. ^{[2
]}

Thomser, C. ^{[3
]}

Willi, O. ^{[1
]}

Xu, Y. ^{[4
]}

机构：

[1] Univ Dusseldorf, Inst Laser & Plasmaphys, D-40225 Dusseldorf, Germany

[2] Forschungszentrum Julich, EURATOM Assoc, Inst Energie & Klimaforsch IEK 4, D-52425 Julich, Germany

[3] Forschungszentrum Julich, EURATOM Assoc, Inst Energie & Klimaforsch IEK 2, D-52425 Julich, Germany

[4] Ecole Royale Mil, Koninklijke Mil Sch, Plasma Phys Lab, B-1000 Brussels, Belgium

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 04期

关键词：

MAGNETIC RECONNECTION; SYNCHROTRON-RADIATION; OPERATIONAL LIMITS; MHD STABILITY; CHAPTER; TOKAMAK; GENERATION; MITIGATION; PLASMAS; ITER;

D O I：

10.1088/0029-5515/51/4/043003

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A heat load experiment was carried out with a new kind of probe for the detection of the damage caused by runaway electrons. The probe was inserted into the plasma edge of the tokamak TEXTOR during an induced disruption. The damages, caused by the disruption generated runaway electrons in the probe material, are evaluated by metallographical and thermogravimetrical methods. In comparison with 3D Geant4 code based Monte Carlo simulations of the runaways information about the energy spectrum and the radial decay of the runaway beam behind a limiter are deduced. The results are in good agreement with an exponential energy spectrum (e-folding energy 3-9 MeV) and corresponding exponential or linear radial decay. Reasonable parameter ranges for the distributions are given. Additional simulations show that the measurement gives the strongest results for the spectral part of the runaways with energies between 8 and 16 MeV.

引用

页数：8

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