Thermal ion orbit loss and radial electric field in DIII-D
Abstract
A relatively simple model for the generation of the radial electric field, Er, near the outboard boundary in a tokamak is presented. The model posits that Er is established to supply the return current necessary to balance the thermal ion orbit loss current. Comparison with DIII-D data is promising. Features of the model that promote a more negative edge Er are higher ion temperature, lower density, lower impurity ion content, and a shorter pathlength for orbit loss. Lastly, these scalings are consistent with experimentally established access to the high-confinement mode edge transport barrier.
- Authors:
-
- General Atomics, San Diego, CA (United States)
- Univ. of California San Diego, La Jolla, CA (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1350067
- Alternate Identifier(s):
- OSTI ID: 1229614
- Grant/Contract Number:
- FC02-04ER54698; AC02-09CH11466; FG02-07AER54917; FG02-95ER54309
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 8; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
deGrassie, John S., Boedo, Jose A., and Grierson, Brian A. Thermal ion orbit loss and radial electric field in DIII-D. United States: N. p., 2015.
Web. doi:10.1063/1.4928558.
deGrassie, John S., Boedo, Jose A., & Grierson, Brian A. Thermal ion orbit loss and radial electric field in DIII-D. United States. https://doi.org/10.1063/1.4928558
deGrassie, John S., Boedo, Jose A., and Grierson, Brian A. Fri .
"Thermal ion orbit loss and radial electric field in DIII-D". United States. https://doi.org/10.1063/1.4928558. https://www.osti.gov/servlets/purl/1350067.
@article{osti_1350067,
title = {Thermal ion orbit loss and radial electric field in DIII-D},
author = {deGrassie, John S. and Boedo, Jose A. and Grierson, Brian A.},
abstractNote = {A relatively simple model for the generation of the radial electric field, Er, near the outboard boundary in a tokamak is presented. The model posits that Er is established to supply the return current necessary to balance the thermal ion orbit loss current. Comparison with DIII-D data is promising. Features of the model that promote a more negative edge Er are higher ion temperature, lower density, lower impurity ion content, and a shorter pathlength for orbit loss. Lastly, these scalings are consistent with experimentally established access to the high-confinement mode edge transport barrier.},
doi = {10.1063/1.4928558},
journal = {Physics of Plasmas},
number = 8,
volume = 22,
place = {United States},
year = {Fri Aug 14 00:00:00 EDT 2015},
month = {Fri Aug 14 00:00:00 EDT 2015}
}
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Works referenced in this record:
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Works referencing / citing this record:
Improvements to an ion orbit loss calculation in the tokamak edge
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- Physics of Plasmas, Vol. 23, Issue 12
Synthetic diagnostic for assessing spatial averaging of charge exchange recombination spectroscopy measurements
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Analysis Of Equilibrium And Turbulent Fluxes Across The Separatrix In A Gyrokinetic Simulation [Supplementary Data]
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Analysis of equilibrium and turbulent fluxes across the separatrix in a gyrokinetic simulation
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- Keramidas Charidakos, I.; Myra, J. R.; Parker, S.
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Analysis Of Equilibrium And Turbulent Fluxes Across The Separatrix In A Gyrokinetic Simulation [Supplementary Data]
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Analysis of equilibrium and turbulent fluxes across the separatrix in a gyrokinetic simulation
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