Hamiltonovský chaos a jeho aplikace na anomální jevy v /turbulentním prostředí

Hamiltonovský chaos a jeho aplikace na anomální jevy v turbulentním prostředí Utlmenie ELMov využitím RMP bolo experimentálne odskúšané na viacerých tokamakoch. Predpokladá sa, že za efektom tejto metódy je nárast transportu elektrónov naprieč magnetickými siločiarami. Dynamika na okraji tokamaku je tiež ovplyvnená turbulenciou. Skúmame súčasný efekt turbulencie v plazme a efekt stochastických siločiar na dynamiku častíc v rámci jednočasticového priblíženia. Zistili sme, že plazmatická turbulencia má na dynamiku častíc značný vplyv, a to ako pre elektróny, tak aj pre ióny. Turbulencia by preto mala byť zahrnutá do budúcich, hlavne jednočasticových, modelov.(Hamiltonian chaos and its application to anomalous dynamics in turbulent environment) RMP-induced ELM control has been tested on several tokamaks. It is believed that increase of electron transport across the magnetic field plays an important role. Edge plasma turbulence also affects dynamics in the edge region of tokamak. We study the simultaneous effect of plasma turbulence and RMP-induced stochastic magnetic field within the single-particle framework. We find out that the plasma turbulence is an important element of dynamics that should be taken into account in further (especially single-particle) studies.Matematicko-fyzikální fakultaFaculty of Mathematics and Physic

Particle Dynamics in the RMP Ergodic Layer under the Influence of Edge Plasma Turbulence

The complex processes in edge tokamak plasma are affected (among others) both by resonant magnetic perturbation (RMP) and by plasma turbulence. RMP is nowadays considered to be a candidate for the mitigation of the edge-localized modes (ELMs). The effect of plasma turbulence inthe edge region has not been studied yet. Since both RMP and plasma turbulence should influence plasma dynamics, studies of their simultaneous effect have potential practical implications. Using a simplified model of the turbulence and single-particle simulations, we discovered that its effect at realistic amplitudes changes the ion dynamics significantly. We expect that the turbulence has a similar effect on electrons, thus potentially influencing the ELM mitigation mechanism

Hamiltonian chaos and its application to anomalous dynamics in turbulent environment

(Hamiltonian chaos and its application to anomalous dynamics in turbulent environment) RMP-induced ELM control has been tested on several tokamaks. It is believed that increase of electron transport across the magnetic field plays an important role. Edge plasma turbulence also affects dynamics in the edge region of tokamak. We study the simultaneous effect of plasma turbulence and RMP-induced stochastic magnetic field within the single-particle framework. We find out that the plasma turbulence is an important element of dynamics that should be taken into account in further (especially single-particle) studies

Hamiltonian chaos and its application to anomalous dynamics in turbulent environment

(Hamiltonian chaos and its application to anomalous dynamics in turbulent environment) RMP-induced ELM control has been tested on several tokamaks. It is believed that increase of electron transport across the magnetic field plays an important role. Edge plasma turbulence also affects dynamics in the edge region of tokamak. We study the simultaneous effect of plasma turbulence and RMP-induced stochastic magnetic field within the single-particle framework. We find out that the plasma turbulence is an important element of dynamics that should be taken into account in further (especially single-particle) studies

Particle Dynamics in the RMP Ergodic Layer under the Influence of Edge Plasma Turbulence

The complex processes in edge tokamak plasma are affected (among others) both by resonant magnetic perturbation (RMP) and by plasma turbulence. RMP is nowadays considered to be a candidate for the mitigation of the edge-localized modes (ELMs). The effect of plasma turbulence inthe edge region has not been studied yet. Since both RMP and plasma turbulence should influence plasma dynamics, studies of their simultaneous effect have potential practical implications. Using a simplified model of the turbulence and single-particle simulations, we discovered that its effect at realistic amplitudes changes the ion dynamics significantly. We expect that the turbulence has a similar effect on electrons, thus potentially influencing the ELM mitigation mechanism