High-density H-mode operation by pellet injection and ELM mitigation with the new active in-vessel saddle coils in ASDEX Upgrade

PT Lang, W Suttrop, E Belonohy, M Bernert… - Nuclear …, 2012 - iopscience.iop.org
Recent experiments at ASDEX Upgrade demonstrate the compatibility of ELM mitigation by
magnetic perturbations with efficient particle fuelling by inboard pellet injection. ELM …

ELM pacing and high-density operation using pellet injection in the ASDEX Upgrade all-metal-wall tokamak

PT Lang, A Burckhart, M Bernert, L Casali… - Nuclear …, 2014 - iopscience.iop.org
Edge-localized mode (ELM) triggering and pacing in an all-metal wall environment shows
significant differences to a first-wall configuration containing carbon. Here we report on …

ITER-relevant H-mode physics at ASDEX Upgrade

LD Horton, GD Conway, AW Degeling… - Plasma physics and …, 2004 - iopscience.iop.org
A variety of techniques are being tested on ASDEX Upgrade for avoiding or reducing the
divertor energy load caused by ELMs. Quiescent H-mode operation has been improved by …

Overview of ASDEX Upgrade results

H Zohm, C Angioni, R Arslanbekov, C Atanasiu… - Nuclear …, 2003 - iopscience.iop.org
Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are
presented. An improved understanding of energy and particle transport emerges in terms of …

ELM pace making and mitigation by pellet injection in ASDEX Upgrade

PT Lang, GD Conway, T Eich, L Fattorini… - Nuclear …, 2004 - iopscience.iop.org
In ASDEX Upgrade, experimental efforts aim to establish pace making and mitigation of type-
I edge localized modes (ELMs) in high confinement mode (H-mode) discharges. Injection of …

Parameter dependence of ELM loss reduction by magnetic perturbations at low pedestal density and collisionality in ASDEX Upgrade

N Leuthold, W Suttrop, R Fischer… - Plasma Physics and …, 2017 - iopscience.iop.org
ELM mitigation by magnetic perturbations is studied at low pedestal collisionalities down to
ITER-like values (${\nu} _ {{e},\mathrm {PED}}^{*}= 0.1$) in ASDEX Upgrade. A …

Pellet fuelling of ELMy H mode discharges on ASDEX Upgrade

PT Lang, H Zohm, K Buchl, JC Fuchs, O Gehre… - Nuclear …, 1996 - iopscience.iop.org
Efforts have been made to develop scenarios allowing more flexible plasma density control
by injecting cryogenic solid hydrogen pellets. While the injection of pellets during ohmic …

Overview of ASDEX Upgrade results

O Gruber, R Arslanbekov, C Atanasiu, A Bard… - Nuclear …, 2001 - iopscience.iop.org
Ion and electron temperature profiles in conventional L and H mode on ASDEX Upgrade are
generally stiff and limited by a critical temperature gradient length∇ T/T as given by ion …

High density operation close to Greenwald limit and H mode limit in ASDEX upgrade

V Mertens, M Kaufmann, J Neuhauser… - Nuclear …, 1997 - iopscience.iop.org
The L mode and H mode density operational window in the vicinity of the density limit has
been investigated with a combination of gas puff refuelling and improved fine tuning of …

Studies of edge localized mode mitigation with new active in-vessel saddle coils in ASDEX Upgrade

W Suttrop, L Barrera, A Herrmann… - Plasma Physics and …, 2011 - iopscience.iop.org
The ASDEX Upgrade tokamak is currently being enhanced with a set of in-vessel saddle
coils for non-axisymmetric perturbations aiming at mitigation or suppression of edge …