Blob dynamics in TORPEX null point configurations
نویسندگان
چکیده
Introduction Filaments, or blobs, are field aligned plasma structures which have been observed in the scrape of layer of magnetically confined plasmas. These filaments carry particles into the SOL and therefore play a role in determining the profiles during L-mode and inter-ELM H-mode scenarios. While there have been many investigations into the dynamics of such filaments [1, 2], few have concentrated on the explicit behavior near X-points. Magnetic tori such as the TORPEX device [3] replicate tokamak scrape off layer (SOL) scenarios while allowing straightforward diagnostic access. While filaments have been studied extensively experimentally within Torpex [4, 5, 6], no theoretical studies have yet explored the dynamics in X-point configurations [7]. The results presented here are a natural progression from previous studies in linear configurations [8], towards an ultimate aim of full tokamak edge simulations.
منابع مشابه
X-Point Effect on Plasma Blob Dynamics.
Plasma blob dynamics on the high-field side in the proximity of a magnetic field null (X point) is investigated in TORPEX. A significant acceleration of the blobs towards the X point is observed. Close to the X point the blobs break apart. The E×B drifts associated with the blobs are measured, isolating the background drift component from the fluctuating contribution of the blob internal potent...
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