dc.creator | Cavedon, M. | es |
dc.creator | Pütterich, T. | es |
dc.creator | Viezzer, Eleonora | es |
dc.creator | Laggner, F. M. | es |
dc.creator | Burckhart, A. | es |
dc.creator | Dunne, M. G. | es |
dc.creator | Fischer, R. | es |
dc.creator | Lebschy, A. | es |
dc.creator | Mink, F. | es |
dc.creator | Stroth, U. | es |
dc.creator | Willensdorfer, M. | es |
dc.creator | Wolfrum, E. | es |
dc.date.accessioned | 2018-09-17T08:12:01Z | |
dc.date.available | 2018-09-17T08:12:01Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Cavedon, M., Pütterich, T., Viezzer, E., Laggner, F.M., Burckhart, A., Dunne, M.G.,...,Wolfrum, E. (2017). Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade. Plasma Physics and Controlled Fusion, 59, 105007 (8pp). https://doi.org/10.1088/1361-6587/aa7ad0. | |
dc.identifier.issn | 1361-6587 | es |
dc.identifier.uri | https://hdl.handle.net/11441/78538 | |
dc.description.abstract | The upgrade of the edge charge exchange recombination spectroscopy diagnostic at ASDEX
Upgrade has enabled highly spatially resolved me
asurements of the impurity ion dynamics during an
edge-localized mode cycle
(
ELM
)
with unprecedented temp
oral resolution, i.e. 65
μ
s. The increase of
transport during an ELM induces a relaxation of the
ion, electron edge gradients in impurity density
and
fl
ows. Detailed characterization of the recovery
of the edge temperature gradients reveals a
difference in the ion and electron channe
l: the maximum ion temperature gradient
T
i
is
re-established on similar timescales as
n
e
, which is faster than the recovery of
T
e
.Afterthe
clamping of the maximum gradient,
T
i
and
T
e
at the pedestal top continue to rise up to the next ELM
while
n
e
stays constant which means that the temperatur
e pedestal and the resu
lting pedestal pressure
widen until the next ELM. The edge radial electric
fi
eld
E
r
at the ELM crash is found to reduce to
typical L-mode values and its ma
ximum recovers to its pre-ELM conditions on a similar time scale as
for
n
e
and
T
i
. Within the uncertainties, the measurements of
E
r
align with their neoclassical
predictions
E
r,neo
for most of the ELM cycle, thus indicating that
E
r
is dominated by collisional
processes. However, between 2 and 4 ms af
ter the ELM crash, other contributions to
E
B
́
fl
ow,
e.g. zonal
fl
ows or ion orbit effects, could not be
excluded within the uncertainties. | es |
dc.description.sponsorship | European Commission (EUROfusion 633053) | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Plasma Physics and Controlled Fusion, 59, 105007 (8pp). | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Edge localised modes | es |
dc.subject | Ion temperature | es |
dc.subject | Edge gradient recovery | es |
dc.subject | Radial electric field | es |
dc.title | Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/submittedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | EUROfusion 633053 | es |
dc.relation.publisherversion | http://iopscience.iop.org/article/10.1088/1361-6587/aa7ad0 | es |
dc.identifier.doi | 10.1088/1361-6587/aa7ad0 | es |
idus.format.extent | 8 | es |
dc.journaltitle | Plasma Physics and Controlled Fusion | es |
dc.publication.volumen | 59 | es |
dc.publication.initialPage | 105007 (8pp) | es |
dc.contributor.funder | European Commission (EC) | |