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The most suitable fuel supplying method of present tokamaks is the injection of cryogenic hydrogen pellets. The effectiveness of the system depends on the poloidal location of the pellet launching point and the ablation profile. The purpose of this thesis is to provide a reliable modelling of:
i) the ablation process accounting for the fast ion and electron populations resulting from additional heating or current drive; and
ii) the matter redistribution inside the discharge.

The first part of the work analyses the physical processes responsible for the extra-ablation due to the supra-thermal electrons and ions. The second part is devoted to the modelling of the homogenisation of the ablated matter in the discharge. The last part concerns the analysis of the anomalous deflection of the pellet trajectory observed in sawtoothing plasmas.

Additional information

Authors: WALLER V, Association EURATOM-CEA, Departement de Recherches sur la Fusion Contrôlée, CEA Cadarache, Saint-Paul-Lez-Durance (FR)
Bibliographic Reference: CEA Cadarache report no. EUR-CEA-FC-1730, 72pp. Free of charge
Availability: Available from Association EURATOM-CEA, Département de Recherches sur la Fusion Contrôlée, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail:
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