Mechanism of transport in symplectic maps applied to magnetic confined plasmas
| Grant number: | 22/05667-2 |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| Start date: | December 01, 2022 |
| Status: | Discontinued |
| Field of knowledge: | Physical Sciences and Mathematics - Physics - Physics of Fluids, Plasma Physics and Electrical Discharge |
| Principal Investigator: | Iberê Luiz Caldas |
| Grantee: | Gabriel Cardoso Grime |
| Host Institution: | Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
| Associated research grant: | 18/03211-6 - Non linear dynamics, AP.TEM |
| Associated scholarship(s): | 24/02591-0 - Transition to chaos in systems with multiple shearless transport barriers., BE.EP.DR |
Abstract The magnetic confinement of tokamak plasmas has been investigated to verify the viability of energy production by controlled thermonuclear fusion. Among the obstacles to achieve this aim, is the particle chaotic loss due to electrical waves in the confined plasma edge. In this project, we investigate theoretically the emergence, observed in the plasma edge, of particle transport barriers that enhance the confinement. The project analyse the emergence of these barriers in perturbed equilibrium and the dependence to the equilibrium parameters of magnetic field profile, that can be changed by external devices as current coils. Nonlinear dynamics effects are used to interpret the barrier's emergence. The analysis of results, applied to tokamaks and the Texas Helimak, will indicate the procedure of plasma profile control that create barriers and reduce the chaotic particle transport in these reactors. | |
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