التفاصيل البيبلوغرافية
| العنوان: |
The search for a flux-expansion divertor in TJ-II. |
| المؤلفون: |
Castejón, F., López-Fraguas, A., Tarancón, A., Velasco, J. L. |
| المصدر: |
AIP Conference Proceedings; 11/2/2008, Vol. 1071 Issue 1, p29-45, 17p, 7 Diagrams, 6 Graphs |
| مصطلحات موضوعية: |
MONTE Carlo method, NUMERICAL analysis, NUMERICAL calculations, MATHEMATICAL models, IONS |
| مستخلص: |
The role of the divertor in a stellarator-based fusion reactor is discussed, making emphasis on the flux-expansion concept. In this context, the possibility of having a flux-expansion divertor in TJ-II is explored. As a first step, the three-dimensional map of the particle flux has been estimated using the code ISDEP in two different plasma regimes. This full-f Monte Carlo code computes the ion guiding-centre trajectories. The particle trajectories rather than the field lines must be considered due to the fact that the typical ion orbits are pretty wide in comparison with the typical plasma lengths. Moreover the plasma electric field and the collisionality must be considered. We have chosen a configuration that presents flux expansion at given toroidal positions. We have estimated the three-dimensional map of heat and particle fluxes and checked that it is possible to reduce them strongly by intersecting the trajectories at a given zone of the space. Future studies will include the development of ergodic zones to reduce the fluxes on the divertor plates. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
