Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models

Pan, C.; Staebler, G. M.; Lao, L. L.; Garofalo, A. M.; Gong, X.; Ren, Q.; McClenaghan, J.; Li, G.; Ding, S.; Qian, J.; Wan, B.; Xu, G. S.; Solomon, W.; Meneghini, O.; Smith, S. P.

doi:10.1088/1741-4326/aa4ff8

Title: Investigation of energy transport in DIII-D High- β _P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models

Journal Article · Wed Jan 11 00:00:00 EST 2017 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/aa4ff8· OSTI ID:1338854

Pan, C.; Staebler, G. M.; Lao, L. L.; Garofalo, A. M.; Gong, X.; Ren, Q.; McClenaghan, J.; Li, G.; Ding, S.; Qian, J.; Wan, B.; Xu, G. S.; Solomon, W.; Meneghini, O.; Smith, S. P.

Energy transport analyses of DIII-D high-β_P EAST-demonstration discharges have been performed using the TGYRO transport package with TGLF turbulent and NEO neoclassical transport models under the OMFIT integrated modeling framework. Ion energy transport is shown to be dominated by neoclassical transport and ion temperature profiles predicted by TGYRO agree closely with the experimental measured profiles for these high- β_P discharges. Ion energy transport is largely insensitive to reductions in the E × B flow shear stabilization. The Shafranov shift is shown to play a role in the suppression of the ion turbulent energy transport below the neoclassical level. Electron turbulent energy transport is under-predicted by TGLF and a significant shortfall in the electron energy transport over the whole core plasma is found with TGLF predictions for these high- β_P discharges. TGYRO can successfully predict the experimental ion and electron temperature profiles by artificially increasing the saturated turbulence level for ETG driven modes used in TGLF.

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Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: FC02-04ER54698; FG03-95ER54309; 2014GB106001; 2015GB101000; 2015GB102001; 2015GB110001

OSTI ID:: 1338854

Alternate ID(s):: OSTI ID: 1338855; OSTI ID: 1372466; OSTI ID: 1374818

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Vol. 57 Journal Issue: 3; ISSN 0029-5515

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: IAEA

Language:: English

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Cited by: 64 works

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Transport barriers in bootstrap-driven tokamaks Staebler, G. M.; Garofalo, A. M.; Pan, C. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5019282	journal	May 2018
Integrated modeling of plasma ramp-up in DIII-D ITER-like and high bootstrap current scenario discharges Wu, M. Q.; Pan, C. K.; Chan, V. S. Physics of Plasmas, Vol. 25, Issue 4 https://doi.org/10.1063/1.5024405	journal	April 2018

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Title: Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models

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Title: Investigation of energy transport in DIII-D High- β _P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models