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Guiding centre orbits of particles in tokamaks

Grant number: 22/15489-4
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Start date: May 01, 2023
Status:Discontinued
Field of knowledge:Physical Sciences and Mathematics - Physics - Physics of Fluids, Plasma Physics and Electrical Discharge
Principal Investigator:Iberê Luiz Caldas
Grantee:Lucas Nedeff Assub Amaral
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):25/14658-5 - Transport generated by current perturbations in Tokamak plasmas, BE.EP.DD

Abstract

To verify the possibility of thermonuclear fusion energy production in magnetically confined plasmas, experiments have been performed in tokamaks. However, the plasma confinement is limited by the particle escape to the vessel. To improve the confinement, the escape has been controlled by modifying the electric and magnetic equilibrium field profiles. In this project, we theoretically investigate the onset of the electric turbulence driven chaotic particle transport at the plasma edge. The analysis considers a Hamiltonian model in toroidal geometry. The results should indicate the equilibrium profiles to reduce the chaotic particle transport in tokamaks. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
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Scientific publications
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
BORGES LEAL, BRUNO; ASSUB AMARAL, LUCAS NEDEFF; CALDAS, IBERE LUIZ. Secondary shearless bifurcations in tokamaks. PHYSICA SCRIPTA, v. 100, n. 8, p. 8-pg., . (24/05700-5, 22/15489-4)