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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 09:56, 18 October 2019
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== Name and affiliation of proponent == | == Name and affiliation of proponent == | ||
CIEMAT, Kurchatov HIBP team, Kharkov HIBP team | |||
== Details of contact person at LNF == | == Details of contact person at LNF == | ||
Alvaro Cappa, Carlos Hidalgo | |||
== 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>. | |||
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: | |||
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: do they play any role in the non-linear saturation mechanisms of AEs? | |||
Experiment will be carried out in plasma scenarios with different AEs control knobs, including: ECRH power, on and off axis ECCD, plasma density and magnetic configuration <ref>A. Cappa, Physics Meeting October 14th 2019</ref>. | |||
== International or National funding project or entity == | == International or National funding project or entity == | ||