DIFFER
DIFFER Publication

Direct observations of L-I-H and H-I-L transitions with the X-point reciprocating probe in ASDEX Upgrade

Author
Abstract

A reciprocating Langmuir probe was used to directly measure the behavior of turbulence and flows in the X-point region during transitions between low-(L) and high-confinement (H) mode in ASDEX Upgrade. The probe traverses the divertor horizontally in 140 ms, typically 2-5 cm below the X-point. Toroidal Mach number, density, floating potential (phi(f)), and electron temperature (T-e) are measured. In the regime accessible to the probe (P-inj < 1.5 MW, line-integrated core density

Year of Publication
2014
Journal
Physics of Plasmas
Volume
21
Issue
4
Number of Pages
042301
Date Published
Apr
ISBN Number
1070-664X; 1089-7674
DOI
10.1063/1.4870012
PId
d39b1f03098dac734efb08ae91ea4607
Alternate Journal
Phys. Plasmas
Journal Article
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