A series of experimental observations of light impurity profiles was carried out in JET (Joint European Torus) ITER-like wall (ILW) L-mode plasmas in order to investigate their transport mechanisms. These discharges feature the presence of 3He, Be, C, N, Ne, whose profiles measured by active Charge Exchange diagnostics are compared with quasi-linear and non-linear gyro-kinetic simulations. The peaking of 3He density follows the electron density peaking, Be and Ne are also peaked, while the density profiles of C and N are flat in the mid plasma region. Gyro-kinetic simulations predict peaked density profiles for all the light impurities studied and at all the radial positions considered, and fail predicting the flat or hollow profiles observed for C and N at mid radius in our cases

Bonanomi, N., Mantica, P., Giroud, C., Angioni, C., Manas, P., Menmuir, S., et al. (2018). Light impurity transport in JET ILW L-mode plasmas. NUCLEAR FUSION, 58(3) [10.1088/1741-4326/aaa4d3].

Light impurity transport in JET ILW L-mode plasmas

Bonanomi, N.;MARIANI, ALBERTO
2018

Abstract

A series of experimental observations of light impurity profiles was carried out in JET (Joint European Torus) ITER-like wall (ILW) L-mode plasmas in order to investigate their transport mechanisms. These discharges feature the presence of 3He, Be, C, N, Ne, whose profiles measured by active Charge Exchange diagnostics are compared with quasi-linear and non-linear gyro-kinetic simulations. The peaking of 3He density follows the electron density peaking, Be and Ne are also peaked, while the density profiles of C and N are flat in the mid plasma region. Gyro-kinetic simulations predict peaked density profiles for all the light impurities studied and at all the radial positions considered, and fail predicting the flat or hollow profiles observed for C and N at mid radius in our cases
Articolo in rivista - Articolo scientifico
light impurity transport, nuclear fusion, JET tokamak
English
Bonanomi, N., Mantica, P., Giroud, C., Angioni, C., Manas, P., Menmuir, S., et al. (2018). Light impurity transport in JET ILW L-mode plasmas. NUCLEAR FUSION, 58(3) [10.1088/1741-4326/aaa4d3].
Bonanomi, N; Mantica, P; Giroud, C; Angioni, C; Manas, P; Menmuir, S; Mariani, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/180445
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