2017
DOI: 10.1088/1741-4326/aa5098
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Correlation analysis for energy losses, waiting times and durations of type I edge-localized modes in the Joint European Torus

Abstract: Abstract. Several important ELM control techniques are in large part motivated by the empirically observed inverse relationship between average ELM energy loss and ELM frequency in a plasma. However, to ensure a reliable effect on the energy released by the ELMs, it is important that this relation is verified for individual ELM events. Therefore, in this work the relation between ELM energy loss (W ELM ) and waiting time (∆t ELM ) is investigated for individual ELMs in a set of ITER-like wall plasmas in JET. A… Show more

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Cited by 3 publications
(8 citation statements)
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“…In [3] a linear relation was observed between relative ELM energy loss and normalized ELM frequency. More recently, in [2] a linear dependence between unnormalized plasma energy loss and inter-ELM time was also noticed. However, it is important to mention that these results were obtained for quantities that were averaged over a large number of ELM occurrences, under stationary plasma conditions.…”
Section: Regression Of Elm-related Propertiesmentioning
confidence: 81%
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“…In [3] a linear relation was observed between relative ELM energy loss and normalized ELM frequency. More recently, in [2] a linear dependence between unnormalized plasma energy loss and inter-ELM time was also noticed. However, it is important to mention that these results were obtained for quantities that were averaged over a large number of ELM occurrences, under stationary plasma conditions.…”
Section: Regression Of Elm-related Propertiesmentioning
confidence: 81%
“…The latter will be referred to as the waiting time. Previous studies already pointed out the relation between these quantities [3], but recent work suggests that the correlation is not as strong as suspected before [2]. This appears to be primarily due to the high variability of energies and waiting times from one ELM to another, even under stationary plasma conditions.…”
Section: Introductionmentioning
confidence: 88%
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