Simulation of RF current condensation on ASDEX upgrade

the AUG Team

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Large, locked islands precede 95% of the disruptions occurring in JET with an ITER-like wall [1]. Electron cyclotron current drive can stabilize large islands and is planned for stabilization of tearing modes on ITER. The theory of current condensation [2] predicts a nonlinear amplification of power deposition due to the temperature sensitivity of ECCD, which improves stabilization efficiency by self-focusing power deposition at island O-points. Alternatively, premature nonlinear damping can occur at the island periphery, “shadowing” island center and reducing stabilization efficiency. The effect can be significant when large ECCD (~20MW for ITER) power is available. We present a numerical code OCCAMI (Of Current Condensation Amid Magnetic Islands) [3] and preliminary simulation results for possible experiments on ASDEX Upgrade (AUG) verifying the theory of current condensation.

Original languageEnglish (US)
Title of host publication47th EPS Conference on Plasma Physics, EPS 2021
PublisherEuropean Physical Society (EPS)
Number of pages4
ISBN (Electronic)9781713837046
StatePublished - 2021
Event47th EPS Conference on Plasma Physics, EPS 2021 - Sitges, Spain
Duration: Jun 21 2021Jun 25 2021

Publication series

Name47th EPS Conference on Plasma Physics, EPS 2021


Conference47th EPS Conference on Plasma Physics, EPS 2021

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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