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ELM-induced cold pulse propagation in ASDEX Upgrade
- Source :
- Plasma physics and controlled fusion, 61 (2019): 045003-1–045003-12. doi:10.1088/1361-6587/aaf9c3, info:cnr-pdr/source/autori:Trier, E.; Wolfrum, E.; Willensdorfer, M.; Yu Q.; Hoelzl M.; Orain F.; Ryter R.; Angioni C.; Bernert M.; Dunne M.G.; Denk S.S.; Fuchs J.C.; Fischer R.; Hennequin P.; Kurzan B.; Mink F.; Mlynek A.; Odstrcil T.; Schneider P.A.; Stroth U.; Tardini G.; Vanovac B.; ASDEX Upgrade Team; EUROfusion MST1 Team/titolo:ELM-induced cold pulse propagation in ASDEX Upgrade/doi:10.1088%2F1361-6587%2Faaf9c3/rivista:Plasma physics and controlled fusion (Print)/anno:2019/pagina_da:045003-1/pagina_a:045003-12/intervallo_pagine:045003-1–045003-12/volume:61, Plasma Physics and Controlled Fusion, Plasma Physics and Controlled Fusion, 2019, 61 (4), pp.045003. ⟨10.1088/1361-6587/aaf9c3⟩, Plasma physics and controlled fusion, 61 (4), Art. Nr.: 045003, Plasma Physics and Controlled Fusion, 61, 045003
- Publication Year :
- 2019
- Publisher :
- Institute of Physics, Bristol , Regno Unito, 2019.
-
Abstract
- In ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found that the edge safety factor or the plasma current are the main determining parameters for the inward penetration of the T-e perturbations. With increasing plasma current the ELM penetration is more shallow in spite of the stronger ELMs. Estimates of the heat pulse diffusivity show that the corresponding transport is too large to be representative of the inter-ELM phase. Ergodization of the plasma edge during ELMs is a possible explanation for the observed properties of the cold pulse propagation, which is qualitatively consistent with non-linear magneto-hydro-dynamic simulations. For complete list of authors see http://dx.doi.org/10.1088/1361-6587/aaf9c3
- Subjects :
- Technology
Tokamak
Materials science
ELMs
Astrophysics::High Energy Astrophysical Phenomena
Cyclotron
Electron
Edge (geometry)
01 natural sciences
114 Physical sciences
h-mode
010305 fluids & plasmas
law.invention
Fusion, plasma och rymdfysik
ASDEX Upgrade
law
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
Physics::Plasma Physics
cold pulse
magnetic islands
MHD instabilities
stochastic field
0103 physical sciences
010306 general physics
particle losses
tokamak
Plasma
stability
Condensed Matter Physics
Fusion, Plasma and Space Physics
Pulse propagation
Computational physics
heat-transport
ddc
Nuclear Energy and Engineering
confinement
Physics::Space Physics
ddc:600
Energy (signal processing)
energy
Subjects
Details
- Language :
- English
- ISSN :
- 13616587, 00321028, 03683281, 07413335, 18792979, 20577648, 00295515, and 13672630
- Database :
- OpenAIRE
- Journal :
- Plasma physics and controlled fusion, 61 (2019): 045003-1–045003-12. doi:10.1088/1361-6587/aaf9c3, info:cnr-pdr/source/autori:Trier, E.; Wolfrum, E.; Willensdorfer, M.; Yu Q.; Hoelzl M.; Orain F.; Ryter R.; Angioni C.; Bernert M.; Dunne M.G.; Denk S.S.; Fuchs J.C.; Fischer R.; Hennequin P.; Kurzan B.; Mink F.; Mlynek A.; Odstrcil T.; Schneider P.A.; Stroth U.; Tardini G.; Vanovac B.; ASDEX Upgrade Team; EUROfusion MST1 Team/titolo:ELM-induced cold pulse propagation in ASDEX Upgrade/doi:10.1088%2F1361-6587%2Faaf9c3/rivista:Plasma physics and controlled fusion (Print)/anno:2019/pagina_da:045003-1/pagina_a:045003-12/intervallo_pagine:045003-1–045003-12/volume:61, Plasma Physics and Controlled Fusion, Plasma Physics and Controlled Fusion, 2019, 61 (4), pp.045003. ⟨10.1088/1361-6587/aaf9c3⟩, Plasma physics and controlled fusion, 61 (4), Art. Nr.: 045003, Plasma Physics and Controlled Fusion, 61, 045003
- Accession number :
- edsair.doi.dedup.....353d5dddeaf8bfb900fdfe5b98d5cac0
- Full Text :
- https://doi.org/10.1088/1361-6587/aaf9c3/pdf