Spectral measurements of runaway electrons by a scanning probe in the TEXTOR tokamak

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2953594· OSTI ID:21266615

Kudyakov, T; Willi, O ^[1]; Finken, K H; Lehnen, M ^[2]; Jakubowski, M ^[3]; Xu, Y ^[4]

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1. ILPP, Heinrich-Heine-Universitaet Duesseldorf, D-40225 Duesseldorf (Germany)
2. Institut fuer Energieforschung-Plasmaphysik, Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany)
3. Max-Planck-Institut fuer Plasmaphysik, IPP-EURATOM Association, D-17491 Greifswald (Germany)
4. Laboratoire de Physique des Plasmas/Laboratorium voor Plasmafysica, ERM/KMS, EURATOM Association, B-1000 Brussels (Belgium)

Energy spectral measurements of runaway electrons were performed by a scanning probe with high spatial and temporal resolution in the TEXTOR tokamak. The probe consists of ten YSO (Y{sub 2}SiO{sub 5}:Ce) crystals, which are shielded by tungsten filters. The probe can resolve electrons with different energies between 4 and 30 MeV. An insertion of the probe to the plasma boundary several times during the discharge allowed spectral measurements of runaway electrons at different minor radial positions at the plasma edge as well as the study of runaway production in time. The high temporal resolution of the probe, 0.05 ms, enabled measurements of runaway electrons not only during low density discharges, but also during plasma disruptions.

• OSTI ID: 21266615
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 79; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BOUNDARY LAYERS
CERIUM
CRYSTALS
FILTERS
PLASMA
PROBES
RESOLUTION
RUNAWAY ELECTRONS
TEXTOR TOKAMAK
TUNGSTEN
YTTRIUM SILICATES