Quasi-coherent fluctuations limiting the pedestal growth on Alcator C-Mod: experiment and modelling
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14ja037_full.pdf
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Author(s)
Diallo, A.
Terry, J.
Cziegler, I.
Delgado-Aparicio, L.
Churchill, R.M.
Edlund, E.M.
Canik, J.
Snyder, P.
Hughes Jr, Jerry
Baek, Seung Gyou
Date Issued
April 2015
Journal
Nuclear Fusion
Publisher
IOP Publishing
Citation
Diallo, A. et al. “Quasi-Coherent Fluctuations Limiting the Pedestal Growth on Alcator C-Mod: Experiment and Modelling.” Nuclear Fusion 55, 5 (April 2015): 053003 © 2015 IAEA
Version
Original manuscript
Abstract
Performance predictions for future fusion devices rely on an accurate model of the pedestal structure. The candidate for predictive pedestal structure is EPED, and it is imperative to test the underlying hypotheses to further gain confidence for ITER projections. Here, we present experimental work testing one of the EPED hypotheses, namely the existence of a soft limit set by microinstabilities such as the kinetic ballooning mode. This work extends recent work on Alactor C-Mod (Diallo et al 2014 Phys. Rev. Lett. 112 115001), to include detailed measurements of the edge fluctuations and comparisons of edge simulation codes and experimental observations.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/0029-5515/55/5/053003
