Kinetic features of TdeV Tokamak SOL plasmas

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:489396

Shoucri, M M; Shkarofski, I P ^[1]; Batishcheva, A A; Sigmar, D J ^[2]

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1. Centre Canadien de Fusion Magnetique, Varrenes, Quebec (Canada)
2. MIT, Cambridge, MA (United States); and others

We apply our 1D2V adaptive Fokker-Planck code ALLA to model detached plasma flow in the scrape-off-layer of Tokamak-de-Varrenes (TdeV). Our previous simulations of the electron transport in the last two meters of open magnetic lines in TdeV showed the importance of kinetic effects. In this investigation we use an improved model of the TdeV SOL plasma which permits us to simulate the whole magnetic line and impose the proper boundary conditions at the target. Also our model uses actual experimental data for detached plasma given by divertor and fast-scanning probes. We begin by using a heat conduction model to reconstruct the plasma temperature and density in the midplane-plate region. We obtain an electron distribution function and calculate the deviation of reaction rates and transport coefficients from their equilibrium values. We also estimate how non-Maxwellian electrons distribution features affect divertor and reciprocating probe measurements. Next we study the sensitivity of the parallel electron transport on plasma profile variations. For comparison we present results for attached TdeV SOL plasma flow modelling, again using recent experimental data.

• DOE Contract Number: FG02-91ER54109; FG02-88ER53263
• OSTI ID: 489396
• Report Number(s): CONF-960354--
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
FLOW MODELS
FOKKER-PLANCK EQUATION
PLASMA SCRAPE-OFF LAYER
PLASMA SIMULATION
VARENNES TOKAMAK