Edge turbulence measurements in toroidal fusion devices

SJ Zweben, JA Boedo, O Grulke… - Plasma Physics and …, 2007 - iopscience.iop.org
This paper reviews measurements of edge plasma turbulence in toroidal magnetic fusion
devices with an emphasis on recent results in tokamaks. The dominant feature of edge …

Major results from the stellarator Wendelstein 7-AS

M Hirsch, J Baldzuhn, C Beidler, R Brakel… - Plasma Physics and …, 2008 - iopscience.iop.org
Wendelstein 7-AS was the first modular stellarator device to test some basic elements of
stellarator optimization: a reduced Shafranov shift and improved stability properties resulted …

Two-dimensional wave-number spectral analysis techniques for phase contrast imaging turbulence imaging data on large helical device

CA Michael, K Tanaka, L Vyacheslavov… - Review of Scientific …, 2015 - pubs.aip.org
An analysis method for unfolding the spatially resolved wave-number spectrum and phase
velocity from the 2D CO 2 laser phase contrast imaging system on the large helical device is …

Response of multiscale turbulence to electron cyclotron heating in the DIII-D tokamak

TL Rhodes, WA Peebles, MA Van Zeeland… - Physics of …, 2007 - pubs.aip.org
Small-scale density turbulence (k⊥ ρ i∼ 4–10) and electron thermal flux are both observed
to increase during electron cyclotron heating (ECH) of a high-temperature tokamak plasma …

Millimeter-wave backscatter diagnostic for the study of short scale length plasma fluctuations

TL Rhodes, WA Peebles, X Nguyen… - Review of scientific …, 2006 - pubs.aip.org
The development, laboratory tests, and experimental results relating to a new high-k
diagnostic technique for the study of short scale length turbulence are reported. The system …

Chapter 4: Laser-aided plasma diagnostics

AJH Donné, CJ Barth, H Weisen - Fusion science and technology, 2008 - Taylor & Francis
Laser-aided diagnostics are widely applied in the field of high-temperature plasma
diagnostics for a large variety of measurements. Incoherent Thomson scattering is used for …

Changes in density fluctuations associated with confinement transitions close to a rational edge rotational transform in the W7-AS stellarator

S Zoletnik, NP Basse, M Saffman… - Plasma physics and …, 2002 - iopscience.iop.org
At certain values of the edge rotational transform bar iota a, the confinement quality of
plasmas in the Wendelstein 7-AS (W7-AS) stellarator is found to react very sensitively to …

Characterization of core and edge turbulence in L-and enhanced Dα H-mode Alcator C-Mod plasmas

NP Basse, EM Edlund, DR Ernst, CL Fiore… - Physics of …, 2005 - pubs.aip.org
The recently upgraded phase-contrast imaging (PCI) diagnostic is used to characterize the
transition from the low (L) to the enhanced D α (EDA) high (H) confinement mode in Alcator …

Characterization of turbulence in L-and ELM-free H-mode Wendelstein 7-AS plasmas

NP Basse, S Zoletnik, GY Antar… - Plasma physics and …, 2003 - iopscience.iop.org
In this paper, measurements of small scale electron density fluctuations in low confinement
(L)-mode and high confinement (H)-mode plasmas obtained by collective scattering of …

Low-and high-mode separation of short wavelength turbulence in dithering Wendelstein 7-AS plasmas

NP Basse, S Zoletnik, M Saffman, J Baldzuhn… - Physics of …, 2002 - pubs.aip.org
In this article measurements of small scale electron density fluctuations in dithering high
confinement H-mode plasmas obtained by collective scattering of infrared light are …