The filamentary structure of ELMs in the scrape-off layer in ASDEX Upgrade

A. Herrmann; A. Kirk; A. Schmid; B. Koch; M. Laux; M. Maraschek; Hans Werner Müller; J. Neuhauser; V. Rohde; M. Tsalas; E. Wolfrum

doi:10.1016/j.jnucmat.2006.12.041

The filamentary structure of ELMs in the scrape-off layer in ASDEX Upgrade

A. Herrmann (Corresponding author), A. Kirk, A. Schmid, B. Koch, M. Laux, M. Maraschek, Hans Werner Müller, J. Neuhauser, V. Rohde, M. Tsalas, E. Wolfrum

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

The filamentary structure in the SOL of ASDEX Upgrade during type-I ELMs was investigated by combined measurements of reciprocating Mach probe, filament probe - a combination of Langmuir probes and magnetic sensor for the radial component of the magnetic field, and IR-thermography of the reciprocating probe head. A correlation along field lines between the Langmuir probes was found, confirming the field aligned structure of the observed filaments. The ELM radial e-folding lengths of particle and heat flux are comparable (about 2 cm). This may be explained by an approximately constant ion temperature well above the electron temperature in the far SOL. The ion temperature estimated from the comparison of heat and particle flux is about 30-60 eV.

Original language	English
Pages (from-to)	528-533
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	363-365
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2006.12.041
Publication status	Published - 15 Jun 2007
Externally published	Yes

Austrian Fields of Science 2012

103022 Plasma physics

Keywords

ASDEX Upgrade
ELMs
F0400
Fluctuation and turbulence
L0200
P0500

Access to Document

10.1016/j.jnucmat.2006.12.041

Cite this

@article{e0572495ba2c4befb9caa9374bc82bde,

title = "The filamentary structure of ELMs in the scrape-off layer in ASDEX Upgrade",

abstract = "The filamentary structure in the SOL of ASDEX Upgrade during type-I ELMs was investigated by combined measurements of reciprocating Mach probe, filament probe - a combination of Langmuir probes and magnetic sensor for the radial component of the magnetic field, and IR-thermography of the reciprocating probe head. A correlation along field lines between the Langmuir probes was found, confirming the field aligned structure of the observed filaments. The ELM radial e-folding lengths of particle and heat flux are comparable (about 2 cm). This may be explained by an approximately constant ion temperature well above the electron temperature in the far SOL. The ion temperature estimated from the comparison of heat and particle flux is about 30-60 eV.",

keywords = "ASDEX Upgrade, ELMs, F0400, Fluctuation and turbulence, L0200, P0500",

author = "A. Herrmann and A. Kirk and A. Schmid and B. Koch and M. Laux and M. Maraschek and M{\"u}ller, \{Hans Werner\} and J. Neuhauser and V. Rohde and M. Tsalas and E. Wolfrum",

year = "2007",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2006.12.041",

language = "English",

volume = "363-365",

pages = "528--533",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "ELSEVIER SCIENCE BV",

number = "1-3",

}

TY - JOUR

T1 - The filamentary structure of ELMs in the scrape-off layer in ASDEX Upgrade

AU - Herrmann, A.

AU - Kirk, A.

AU - Schmid, A.

AU - Koch, B.

AU - Laux, M.

AU - Maraschek, M.

AU - Müller, Hans Werner

AU - Neuhauser, J.

AU - Rohde, V.

AU - Tsalas, M.

AU - Wolfrum, E.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - The filamentary structure in the SOL of ASDEX Upgrade during type-I ELMs was investigated by combined measurements of reciprocating Mach probe, filament probe - a combination of Langmuir probes and magnetic sensor for the radial component of the magnetic field, and IR-thermography of the reciprocating probe head. A correlation along field lines between the Langmuir probes was found, confirming the field aligned structure of the observed filaments. The ELM radial e-folding lengths of particle and heat flux are comparable (about 2 cm). This may be explained by an approximately constant ion temperature well above the electron temperature in the far SOL. The ion temperature estimated from the comparison of heat and particle flux is about 30-60 eV.

AB - The filamentary structure in the SOL of ASDEX Upgrade during type-I ELMs was investigated by combined measurements of reciprocating Mach probe, filament probe - a combination of Langmuir probes and magnetic sensor for the radial component of the magnetic field, and IR-thermography of the reciprocating probe head. A correlation along field lines between the Langmuir probes was found, confirming the field aligned structure of the observed filaments. The ELM radial e-folding lengths of particle and heat flux are comparable (about 2 cm). This may be explained by an approximately constant ion temperature well above the electron temperature in the far SOL. The ion temperature estimated from the comparison of heat and particle flux is about 30-60 eV.

KW - ASDEX Upgrade

KW - ELMs

KW - F0400

KW - Fluctuation and turbulence

KW - L0200

KW - P0500

UR - https://www.scopus.com/pages/publications/34248547712

U2 - 10.1016/j.jnucmat.2006.12.041

DO - 10.1016/j.jnucmat.2006.12.041

M3 - Article

AN - SCOPUS:34248547712

SN - 0022-3115

VL - 363-365

SP - 528

EP - 533

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

The filamentary structure of ELMs in the scrape-off layer in ASDEX Upgrade

Abstract

Austrian Fields of Science 2012

Keywords

Access to Document

Other files and links

Fingerprint

Cite this