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

Hole, Matthew; Dendy, R O; Bowie, Craig

Description

The sandpile paradigm is widely used to model aspects of the phenomenology of magnetically confined fusion (MCF) plasmas, including enhanced confinement, edge pedestals and, potentially, the impulsive energy and particle release process known as ELMing. Here we identify new points of contact between ELMing and the systemwide avalanches in a sandpile. We compare the quantified response [Calderon et al., Phys. Plasmas 20, 042306 (2014)] to increased fuelling of the time sequence of edge localised...[Show more]

dc.contributor.authorHole, Matthew
dc.contributor.authorDendy, R O
dc.contributor.authorBowie, Craig
dc.date.accessioned2018-11-29T22:54:37Z
dc.date.available2018-11-29T22:54:37Z
dc.identifier.issn1070-664X
dc.identifier.urihttp://hdl.handle.net/1885/152853
dc.description.abstractThe sandpile paradigm is widely used to model aspects of the phenomenology of magnetically confined fusion (MCF) plasmas, including enhanced confinement, edge pedestals and, potentially, the impulsive energy and particle release process known as ELMing. Here we identify new points of contact between ELMing and the systemwide avalanches in a sandpile. We compare the quantified response [Calderon et al., Phys. Plasmas 20, 042306 (2014)] to increased fuelling of the time sequence of edge localised mode events in a series of similar Joint European Torus plasmas with the response to increased fuelling of the time sequence of systemwide avalanches in a sandpile model [Chapman et al., Phys. Rev. Lett. 86, 2814 (2001)] that has well established links to MCF plasma phenomenology. Both the probability density functions of inter-event time intervals, and delay time embeddings of event time sequences, at different fuelling rates, show common features and point to shared underlying physics.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Institute of Physics (AIP)
dc.sourcePhysics of Plasmas
dc.titleDelay time embedding of mass loss avalanches in a fusion plasma-oriented sandpile model
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume23
dc.date.issued2016
local.identifier.absfor020204 - Plasma Physics; Fusion Plasmas; Electrical Discharges
local.identifier.ariespublicationa383154xPUB4485
local.type.statusPublished Version
local.contributor.affiliationHole, Matthew, College of Science, ANU
local.contributor.affiliationDendy, R O, EURATOM/CCFE Fusion Association
local.contributor.affiliationBowie, Craig, College of Science, ANU
local.bibliographicCitation.issue10
local.identifier.doi10.1063/1.4964667
dc.date.updated2018-11-29T08:01:02Z
local.identifier.scopusID2-s2.0-84991573947
local.identifier.thomsonID000387445500003
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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