Exploration of the Super H-mode regime on DIII-D and potential advantages for burning plasma devices

Solomon, W. M.; Snyder, P. B.; Bortolon, A.; Burrell, K. H.; Garofalo, A. M.; Grierson, B. A.; Groebner, R. J.; Loarte, A.; Leonard, A. W.; Meneghini, O.; Nazikian, R.; Osborne, T. H.; Petty, C. C.; Poli, F.

doi:10.1063/1.4944822

Title: Exploration of the Super H-mode regime on DIII-D and potential advantages for burning plasma devices

Journal Article · Fri Mar 25 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4944822· OSTI ID:1295402

Solomon, W. M. ^[1]; Snyder, P. B. ^[2];

^[1];

^[2]; Garofalo, A. M. ^[2];

^[1]; Groebner, R. J. ^[2]; Loarte, A. ^[3]; Leonard, A. W. ^[2]; Meneghini, O. ^[2]; Nazikian, R. ^[1]; Osborne, T. H. ^[2]; Petty, C. C. ^[2];

^[1]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)
ITER Organization, St. Paul Lez Durance (France)

A new high pedestal regime (\Super H-mode") has been predicted and accessed on DIII-D. Super H-mode was first achieved on DIII-D using a quiescent H-mode edge, enabling a smooth trajectory through pedestal parameter space. By exploiting Super H-mode, it has been possible to access high pedestal pressures at high normalized densities. While elimination of ELMs is beneficial for Super H-mode, it may not be a requirement, as recent experiments have maintained high pedestals with ELMs triggered by lithium granule injection. Simulations using TGLF for core transport and the EPED model for the pedestal find that ITER can benefit from the improved performance associated with Super H-mode, with increased values of fusion power and gain possible. Similar studies demonstrate that the Super H-mode pedestal can be advantageous for a steady-state power plant, by providing a path to increasing the bootstrap current while simultaneously reducing the demands on the core physics performance.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-09CH11466; AC52-07NA27344; FC02-04ER54698; FC02-06ER54873; FG02-08ER54999; FG02-89ER53296; FG02-95ER54309

OSTI ID:: 1295402

Alternate ID(s):: OSTI ID: 1244131; OSTI ID: 1373917

Journal Information:: Physics of Plasmas, Vol. 23, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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Self-consistent core-pedestal transport simulations with neural network accelerated models Meneghini, O.; Smith, S. P.; Snyder, P. B. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa7776	journal	July 2017
High fusion performance in Super H-mode experiments on Alcator C-Mod and DIII-D Snyder, P. B.; Hughes, J. W.; Osborne, T. H. Nuclear Fusion, Vol. 59, Issue 8 https://doi.org/10.1088/1741-4326/ab235b	journal	June 2019
Integrated modelling of core and divertor plasmas for the DEMO Fusion Neutron Source hybrid facility Dnestrovskiy, A. Y.; Kukushkin, A. S.; Kuteev, B. V. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab3075	journal	August 2019

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