skip to main content

DOE PAGESDOE PAGES

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

Here, 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.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2]
  1. Chinese Academy of Sciences, Hefei (People's Republic of China)
  2. General Atomics, San Diego, CA (United States)
  3. Oak Ridge Associated Univ., Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
FC02-04ER54698; FG03-95ER54309; 2014GB106001; 2015GB101000; 2015GB102001; 2015GB110001
Type:
Published Article
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 57; Journal Issue: 3; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Research Org:
General Atomics, San Diego, CA (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; high-BP; energy transport; EXB; Shafranov shif
OSTI Identifier:
1338854
Alternate Identifier(s):
OSTI ID: 1338855; OSTI ID: 1372466; OSTI ID: 1374818

Pan, Chengkang, Staebler, Gary M., Lao, Lang L., Garofalo, Andrea M., Gong, Xianzu, Ren, Qilong, McClenaghan, Jonathan, Li, Guoqiang, Ding, Siye, Qian, Jinping, Wan, Baonian, Xu, G. S., Solomon, Wayne, Meneghini, Orso, and Smith, Sterling P.. Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models [Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with turbulent and neoclassical transport models]. United States: N. p., Web. doi:10.1088/1741-4326/aa4ff8.
Pan, Chengkang, Staebler, Gary M., Lao, Lang L., Garofalo, Andrea M., Gong, Xianzu, Ren, Qilong, McClenaghan, Jonathan, Li, Guoqiang, Ding, Siye, Qian, Jinping, Wan, Baonian, Xu, G. S., Solomon, Wayne, Meneghini, Orso, & Smith, Sterling P.. Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models [Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with turbulent and neoclassical transport models]. United States. doi:10.1088/1741-4326/aa4ff8.
Pan, Chengkang, Staebler, Gary M., Lao, Lang L., Garofalo, Andrea M., Gong, Xianzu, Ren, Qilong, McClenaghan, Jonathan, Li, Guoqiang, Ding, Siye, Qian, Jinping, Wan, Baonian, Xu, G. S., Solomon, Wayne, Meneghini, Orso, and Smith, Sterling P.. 2017. "Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models [Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with turbulent and neoclassical transport models]". United States. doi:10.1088/1741-4326/aa4ff8.
@article{osti_1338854,
title = {Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models [Investigation of energy transport in DIII-D high-βP EAST-demonstration discharges with turbulent and neoclassical transport models]},
author = {Pan, Chengkang and Staebler, Gary M. and Lao, Lang L. and Garofalo, Andrea M. and Gong, Xianzu and Ren, Qilong and McClenaghan, Jonathan and Li, Guoqiang and Ding, Siye and Qian, Jinping and Wan, Baonian and Xu, G. S. and Solomon, Wayne and Meneghini, Orso and Smith, Sterling P.},
abstractNote = {Here, energy transport analyses of DIII-D high-βP 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-βP 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-βP 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.},
doi = {10.1088/1741-4326/aa4ff8},
journal = {Nuclear Fusion},
number = 3,
volume = 57,
place = {United States},
year = {2017},
month = {1}
}