TJ-II:Why fast particle electromagnetic induced stabilization in fusion plasmas?: Difference between revisions
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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>. | 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: | ||
Relation between fast particle driven modes and zonal structures: | 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? | ||
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 == | ||
Latest revision as of 09:56, 18 October 2019
Experimental campaign
2019 Autumn
Proposal title
Why fast particle electromagnetic induced stabilization in fusion plasmas?
Name and affiliation of proponent
CIEMAT, Kurchatov HIBP team, Kharkov HIBP team
Details of contact person at LNF
Alvaro Cappa, Carlos Hidalgo
Description of the activity
Fast ions have been found to impact plasma confinement [1]. 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 [2].
Non-linear coupling between AEs and low frequency zonal flows have been reported in TJ-II using Doppler reflectometry [[3]] 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 [4].
International or National funding project or entity
If applicable, enter funding here or write N/A
Description of required resources
Required resources:
- Number of plasma discharges or days of operation:
- Essential diagnostic systems:
- Type of plasmas (heating configuration):
- Specific requirements on wall conditioning if any:
- External users: need a local computer account for data access: yes/no
- Any external equipment to be integrated? Provide description and integration needs:
Preferred dates and degree of flexibility
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