Overview of results from the compact toroidal hybrid experiment

G. J. Hartwell, M. C. ArchMiller, M. Cianciosa, J. D. Hanson, J. Hebert, J. Herfindal, S. F. Knowlton, X. Ma, D. A. Maurer, M. Pandya, P. Traverso

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Non-axisymmetric fields in the form of weak stellarator equilibria are found to modify the nature of disruptions in current-carrying toroidal discharges. Experiments on the Compact Toroidal Hybrid (CTH) demonstrate that disruptions in hybrid tokamak/torsatron discharges can be avoided in conditions that would lead to disruptions in tokamak plasmas. The Greenwald density limit is exceeded as the vacuum magnetic transform from the torsatron coils is raised. Plasma terminations due to vertical displacement events (VDEs) can occur if uncompensated in current-driven discharges, but become passively stable against vertical drift as the vacuum transform is raised. Interpretation of these results requires equilibrium modeling with non-axisymmetric capability, such as given by the V3FIT, 3D reconstruction code.

Original languageEnglish
Title of host publication40th EPS Conference on Plasma Physics, EPS 2013
PublisherEuropean Physical Society (EPS)
Pages557-560
Number of pages4
ISBN (Print)9781632663108
StatePublished - 2013
Externally publishedYes
Event40th EPS Conference on Plasma Physics, EPS 2013 - Espoo, Finland
Duration: Jul 1 2013Jul 5 2013

Publication series

Name40th EPS Conference on Plasma Physics, EPS 2013
Volume1

Conference

Conference40th EPS Conference on Plasma Physics, EPS 2013
Country/TerritoryFinland
CityEspoo
Period07/1/1307/5/13

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