Fast-Ion Dynamics in the TEXTOR Tokamak Measured by Collective Thomson Scattering

Journal Article · Fri Nov 17 04:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.205005· OSTI ID:20861153

Bindslev, H; Nielsen, S K; Meo, F; Michelsen, P K; Michelsen, S; Tsakadze, E L ^[1]; Porte, L ^[2]; Hoekzema, J A; Oosterbeek, J W ^[3]; Korsholm, S B ^[1]; Westerhof, E ^[4]; Woskov, P ^[5]

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1. EURATOM-Risoe National Laboratory, DK-4000 Roskilde (Denmark)
2. CRPP, EURATOM-Confederation Suisse, EPFL, CH-1015 Lausanne (Switzerland)
3. EURATOM-Forschungszentrum Juelich GmbH, Institut fuer Plasmaphysik, D-52425 Juelich (Germany)
4. FOM-Institute for Plasma Physics Rijnhuizen, EURATOM-FOM (Netherlands)
5. MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)

Here we present the first measurements by collective Thomson scattering of the evolution of fast-ion populations in a magnetically confined fusion plasma. 150 kW and 110 Ghz radiation from a gyrotron were scattered in the TEXTOR tokamak plasma with energetic ions generated by neutral beam injection and ion cyclotron resonance heating. The temporal behavior of the spatially resolved fast-ion velocity distribution is inferred from the received scattered radiation. The fast-ion dynamics at sawteeth and the slowdown after switch off of auxiliary heating is resolved in time. The latter is shown to be in close agreement with modeling results.

• OSTI ID: 20861153
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AUXILIARY HEATING
BEAM INJECTION
EVOLUTION
GHZ RANGE 100-1000
ICR HEATING
PLASMA
SAWTOOTH OSCILLATIONS
SIMULATION
SLOWING-DOWN
TAIL IONS
TEXTOR TOKAMAK
THOMSON SCATTERING