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TJ-II:Why fast particle electromagnetic induced stabilization in fusion plasmas?: Difference between revisions
TJ-II:Why fast particle electromagnetic induced stabilization in fusion plasmas? (view source)
Revision as of 12:03, 7 October 2019
, 7 October 2019→Description of the activity
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== Description of the activity == | == Description of the activity == | ||
Fast ions have been found to impact plasma confinement <ref>J. Citrin et al., PRL 111 (2013) 155001</ref>. Understanding the underlying physics is an essential task for future fusion reactors where plasmas will be dominated by fast particle dynamics. In particular, non-linear excitations of zonal structures by fast particle driven modes are predicted to play an important role on the nonlinear dynamics of AEs and related transport <ref> Z Qiu et al., PRL 120 (2018) 135001</ref>. | Fast ions have been found to impact plasma confinement <ref>J. Citrin et al., PRL 111 (2013) 155001</ref>. Understanding the underlying physics is an essential task for future fusion reactors where plasmas will be dominated by fast particle dynamics. In particular, non-linear excitations of zonal structures by fast particle driven modes are predicted to play an important role on the nonlinear dynamics of AEs and related transport <ref> Z Qiu et al., PRL 120 (2018) 135001</ref>. | ||
Non-linear coupling between AEs and low frequency zonal flows have been reported in TJ-II using Doppler reflectometry [<ref>T. Estrada et al., NF 55 (2015) 063005</ref>] and HIBP measurements. | |||
The goal is to address the following questions: | The goal is to address the following questions: | ||
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1. Relation between fast particle driven modes and zonal structures: Is there any evidence of Zonal Flows (i.e. electric fields) or / and Zonal Fields (i.e. magnetic fields) driven by fast particles?. If yes, do they play any role on thermal transport Impact? | 1. Relation between fast particle driven modes and zonal structures: Is there any evidence of Zonal Flows (i.e. electric fields) or / and Zonal Fields (i.e. magnetic fields) driven by fast particles?. If yes, do they play any role on thermal transport Impact? | ||
2. Non-linear interplay between high (AEs) and low frequency modes: | 2. Non-linear interplay between high (AEs) and low frequency modes: do they play any role in the non-linear saturation mechanisms of AEs? | ||
== International or National funding project or entity == | == International or National funding project or entity == | ||