Characteristics of the Alfvénic activity during the current quench in ASDEX Upgrade
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DOI: 10.1088/1741-4326/ad502b
Abstract: ASDEX Upgrade has developed multiple massive gas injection (MGI) scenarios to investigate runaway electron (RE) dynamics. During the current quench of the MGI induced disruptions, Alfvénic activity is observed in the 300–800 kHz range. With… read more here.
Keywords: nic activity; current quench; alfv nic; asdex upgrade ... See more keywords
A novel unsupervised machine learning algorithm for automatic Alfvénic activity detection in the TJ-II stellarator
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DOI: 10.1088/1741-4326/ad85f4
Abstract: A novel sparse encoding algorithm is developed to detect and study plasma instabilities automatically. This algorithm, called Elastic Random Mode Decomposition, is applied to the Mirnov coil signals of a dataset of 1291 discharges of… read more here.
Keywords: nic activity; alfv nic; novel unsupervised; unsupervised machine ... See more keywords