Measurements of the runaway electron energy during disruptions in the tokamak TEXTOR

Journal Article · Tue May 15 04:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4717759· OSTI ID:22072338

Forster, M; Finken, K H; Willi, O ^[1]; Lehnen, M ^[2]; Xu, Y ^[3]

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1. Institut fuer Laser- und Plasmaphysik, Heinrich-Heine-Universitaet Duesseldorf, Universitaetsstr. 1, 40225 Duesseldorf (Germany)
2. Institut fuer Energie- und Klimaforschung, Forschungszentrum Juelich GmbH, EURATOM Association, 52425 Juelich (Germany)
3. Laboratory for Plasma Physics, Ecole Royale Militaire-Koninklijke Militaire School, Avenue de la Renaissance 30, 1000 Brussels (Belgium)

Calorimetric measurements of the total runaway electron energy are carried out using a reciprocating probe during induced TEXTOR disruptions. A comparison with the energy inferred from runaway energy spectra, which are measured with a scintillator probe, is used as an independent check of the results. A typical runaway current of 100 kA at TEXTOR contains 30 to 35 kJ of runaway energy. The dependencies of the runaway energy on the runaway current, the radial probe position, the toroidal magnetic field and the predisruptive plasma current are studied. The conversion efficiency of the magnetic plasma energy into runaway energy is calculated to be up to 26%.

• OSTI ID: 22072338
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CALORIMETRY
CONVERSION
EFFICIENCY
ELECTRIC CURRENTS
ENERGY SPECTRA
MAGNETIC FIELDS
PLASMA
PROBES
RUNAWAY ELECTRONS
TEXTOR TOKAMAK