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TJ-II:Excitation of zonal flow oscillations by energetic particles: Difference between revisions
TJ-II:Excitation of zonal flow oscillations by energetic particles (view source)
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== Name and affiliation of proponent == | == Name and affiliation of proponent == | ||
Edilberto Sánchez, José Luis Velasco | Edilberto Sánchez, José Luis Velasco, Iván Calvo, José Manuel García-Regaña | ||
== Details of contact person at LNF (if applicable) == | == Details of contact person at LNF (if applicable) == | ||
Edilberto Sánchez | Edilberto Sánchez (edi.sanchez@ciemat.es) | ||
== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)== | == Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)== | ||
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In this experiment we plan to study the excitation of ZF oscillations by energetic particles in TJ-II. | In this experiment we plan to study the excitation of ZF oscillations by energetic particles in TJ-II. | ||
We will generate fast ions by means of the diagnostic neutral beam injector and try to measure oscillations in the zonal potential, if we are able to generate them. If so, we will characterize their spectrum and study the dependency with parameters: beam intensity, beam energy, and ion and electron temperatures. | We will work in NBI plasmas and will look for LFO by means of the Doppler reflectometry system and the dual HIBP. We will change the energy and intensity of the neutral beam in order to identify changes in the LFO, that can be reproduced in GK simulations, if these oscillations are generated. | ||
As an alternative we could work in ECRH heated plasmas and generate fast ions by means of the diagnostic neutral beam injector (DNBI) and try to measure oscillations in the zonal potential, if we are able to generate them. If so, we will characterize their spectrum and study the dependency with parameters: beam intensity, beam energy, and ion and electron temperatures. | |||
The experimental results will be compared to dedicated gyrokinetic simulations. | The experimental results will be compared to dedicated gyrokinetic simulations. | ||
== If applicable, International or National funding project or entity == | == If applicable, International or National funding project or entity == | ||
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The Doppler reflectometer and the dual HIBP are basic for the characterization of the potential oscillations. | The Doppler reflectometer and the dual HIBP are basic for the characterization of the potential oscillations. | ||
A characterization of the fast ions populations by means of passive spectrroscopy and/or luminiscent probes will be very convenient. | A characterization of the fast ions populations by means of the CNPA and passive spectrroscopy and/or luminiscent probes will be very convenient. | ||
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- The double Heavy Ion Beam probe | - The double Heavy Ion Beam probe | ||
- Doppler reflectometer | - Doppler reflectometer | ||
- [passive spectrroscopy and/or luminiscent probes] | - [ CNPA - passive spectrroscopy and/or luminiscent probes] | ||
* Type of plasmas (heating configuration): stable ECRH plasmas in the standard configuration. | * Type of plasmas (heating configuration): stable NBI (and/or ECRH) plasmas in the standard configuration. | ||
* Specific requirements on wall conditioning if any: | * Specific requirements on wall conditioning if any: | ||
* External users: need a local computer account for data access: no | * External users: need a local computer account for data access: no | ||
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[[Category:TJ-II internal documents]] | [[Category:TJ-II internal documents]] | ||
[[Category:TJ-II experimental proposals]] | [[Category:TJ-II experimental proposals 2017]] | ||