Extensive statistical analysis of ELMs on JET with a carbon wall

A Murari, F Pisano, J Vega, B Cannas… - Plasma Physics and …, 2014 - iopscience.iop.org
Edge localized modes (ELMs) are bursts of instabilities which deteriorate the confinement of
H mode plasmas and can cause damage to the divertor of next generation of devices. On …

[HTML][HTML] Relationship of edge localized mode burst times with divertor flux loop signal phase in JET

SC Chapman, RO Dendy, TN Todd, NW Watkins… - Physics of …, 2014 - pubs.aip.org
A phase relationship is identified between sequential edge localized modes (ELMs)
occurrence times in a set of H-mode tokamak plasmas to the voltage measured in full flux …

Time-resonant tokamak plasma edge instabilities?

AJ Webster, RO Dendy, FA Calderon… - Plasma physics and …, 2014 - iopscience.iop.org
For a two week period during the Joint European Torus 2012 experimental campaign, the
same high confinement plasma was repeated 151 times. The dataset was analysed to …

[HTML][HTML] The global build-up to intrinsic edge localized mode bursts seen in divertor full flux loops in JET

SC Chapman, RO Dendy, TN Todd, NW Watkins… - Physics of …, 2015 - pubs.aip.org
A global signature of the build-up to an intrinsic edge localized mode (ELM) is found in the
temporal analytic phase of signals measured in full flux azimuthal loops in the divertor …

Delay time embedding of mass loss avalanches in a fusion plasma-oriented sandpile model

CA Bowie, RO Dendy, MJ Hole - Physics of Plasmas, 2016 - pubs.aip.org
The sandpile paradigm is widely used to model aspects of the phenomenology of
magnetically confined fusion (MCF) plasmas, including enhanced confinement, edge …

The global build-up to intrinsic ELM bursts and comparison with pellet triggered ELMs seen in JET

SC Chapman, RO Dendy, PT Lang, NW Watkins… - Nuclear …, 2016 - iopscience.iop.org
We focus on JET plasmas in which ELMs are triggered by pellets in the presence of ELMs
which occur naturally. We perform direct time domain analysis of signals from fast radial field …

Intrinsic ELMing in ASDEX Upgrade and global control system-plasma self-entrainment

SC Chapman, PT Lang, RO Dendy, NW Watkins… - Nuclear …, 2018 - iopscience.iop.org
It is well established that edge localized modes can be entrained to the frequency of applied
global magnetic perturbations. These perturbations are delivered to the plasma using the …

Behaviour of multiple discrete waiting times between mass loss events in a sandpile model

CA Bowie, MJ Hole - Plasma Research Express, 2020 - iopscience.iop.org
The avalanche waiting time behaviour of the Chapman sandpile model (Chapman et al,
2001 Phys. Rev. Lett. 86, 2814), compared to the ELM waiting time behaviour of a JET …

[PDF][PDF] The statistics of edge-localised plasma instabilities

AJ Webster, RO Dendy, FA Calderon… - … Society Conf. on …, 2013 - scipub.euro-fusion.org
Edge localised modes (ELMs)[1, 2], are presently common in high performance tokamak
plasmas, but must be controlled or avoided in larger future tokamaks. They are …

[PDF][PDF] Global control system and plasma dynamics distinguish naturally occurring and pellet-precipitated edge localized modes in the JET tokamak

SC Chapman, RO Dendy, PT Lang… - 43rd EPS Conference …, 2016 - pure.mpg.de
A promising method for mitigating ELMs is to trigger smaller, more frequent ELMs by
injecting pellets of frozen deuterium that modify the plasma edge [1-3]. Here, we report direct …