Transport simulations and electric field in T-10 and TJ-II

A modeling of the transport processes in T-10 tokamak using Astra code for two sets of discharges having ECRH auxiliary heating is presented. Electric potential measurements using HIBP show that radial profiles are negative for ohmic heating but become positive for large heating powers. We first obt...

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Bibliographic Details
Published inRadiation effects and defects in solids Vol. 178; no. 11-12; pp. 1332 - 1336
Main Authors Martinell, J.J., Lara-Martínez, H.U.
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 02.11.2023
Taylor & Francis Ltd
Subjects
Electric fields
Electric potential
Heating
Plasma magnetic confinement
Transport processes
Transport properties
transport simulations
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Summary:A modeling of the transport processes in T-10 tokamak using Astra code for two sets of discharges having ECRH auxiliary heating is presented. Electric potential measurements using HIBP show that radial profiles are negative for ohmic heating but become positive for large heating powers. We first obtain $ T_\alpha $ T α and n profiles by adjusting transport coefficients and then try to obtain the radial $ E_r $ E r profiles by assuming three models for it. Results show good agreement for Ohmic and small ECRH power phases but not for large power where $ E_r \gt 0 $ E r > 0 indicating that other processes have to be included.
ISSN:1042-0150
1029-4953
DOI:10.1080/10420150.2023.2291753