A. Frattolillo, F. Bombarda, S. Migliori, S. Podda, M. Capobianchi, S. Combs, C. Foust, S. Meitner, D. Fehling, J. Mc Gill, L. Baylor, S. Milora, B. Coppi, G. Roveta
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Advances on the high speed ignitor Pellet Injector (IPI)
The control of the density profile during the initial plasma current rise is a critical issue to optimize ohmic and fusion heating rates of Ignitor plasmas. Simulations performed with the NGS ablation model, for the reference ignition plasma parameters (ne0 ≅ ni0 ≅ 1021 m−3, Te0 ≅ Ti0 ≅ 11 keV), indicate that deuterium pellets of a few mm (≤ 4 mm) in size injected at 3–4 km/s from the low field side should ensure adequate deep fuelling.
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