OEDGE modeling of DIII-D density scan discharges leading to detachment

J. D. Elder; P. C. Stangeby; B. D. Bray; N. Brooks; A. W. Leonard; A. G. McLean; E. A. Unterberg; J. G. Watkins

doi:10.1016/j.jnucmat.2014.09.055

OEDGE modeling of DIII-D density scan discharges leading to detachment

J. D. Elder, P. C. Stangeby, B. D. Bray, N. Brooks, A. W. Leonard, A. G. McLean, E. A. Unterberg, J. G. Watkins

Power Exhaust and Particle Control

Research output: Contribution to journal › Article › peer-review

Abstract

Abstract The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for D_α, D_β and D_γ for values of T_e and n_e characteristic of the range of divertor plasma conditions from attached to weakly detached. Confidence in these values is essential to spectroscopic interpretation of any experiment or modeling effort. Good agreement between experiment and calculated emissions is found for both EIRENE and ADAS calculated emission profiles, confirming their reliability for plasma conditions down to ∼1 eV. For the cold dense plasma conditions characteristic of detachment, it is found that the calculated emissions are especially sensitive to T_e.

Original language	English
Article number	48468
Pages (from-to)	565-568
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	463
DOIs	https://doi.org/10.1016/j.jnucmat.2014.09.055
State	Published - Jul 22 2015

Funding

This work was supported in part by the US Department of Energy under DE-FC02-04ER54698 , DE-AC52-07NA27344 , DE-FG02-07ER54917 , DE-AC05-00OR22725 , DE-AC52-07NA27344 , and DE-AC04-94AL85000 . DIII-D data shown in this paper can be obtained in digital format by following the links at https://fusion.gat.com/global/D3D_DMP .

Funders	Funder number
US Department of Energy	DE-AC05-00OR22725, DE-AC04-94AL85000, DE-FC02-04ER54698, DE-AC52-07NA27344, DE-FG02-07ER54917

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jnucmat.2014.09.055

Cite this

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title = "OEDGE modeling of DIII-D density scan discharges leading to detachment",

abstract = "Abstract The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for Dα, Dβ and Dγ for values of Te and ne characteristic of the range of divertor plasma conditions from attached to weakly detached. Confidence in these values is essential to spectroscopic interpretation of any experiment or modeling effort. Good agreement between experiment and calculated emissions is found for both EIRENE and ADAS calculated emission profiles, confirming their reliability for plasma conditions down to ∼1 eV. For the cold dense plasma conditions characteristic of detachment, it is found that the calculated emissions are especially sensitive to Te.",

author = "Elder, {J. D.} and Stangeby, {P. C.} and Bray, {B. D.} and N. Brooks and Leonard, {A. W.} and McLean, {A. G.} and Unterberg, {E. A.} and Watkins, {J. G.}",

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doi = "10.1016/j.jnucmat.2014.09.055",

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T1 - OEDGE modeling of DIII-D density scan discharges leading to detachment

AU - Elder, J. D.

AU - Stangeby, P. C.

AU - Bray, B. D.

AU - Brooks, N.

AU - Leonard, A. W.

AU - McLean, A. G.

AU - Unterberg, E. A.

AU - Watkins, J. G.

PY - 2015/7/22

Y1 - 2015/7/22

N2 - Abstract The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for Dα, Dβ and Dγ for values of Te and ne characteristic of the range of divertor plasma conditions from attached to weakly detached. Confidence in these values is essential to spectroscopic interpretation of any experiment or modeling effort. Good agreement between experiment and calculated emissions is found for both EIRENE and ADAS calculated emission profiles, confirming their reliability for plasma conditions down to ∼1 eV. For the cold dense plasma conditions characteristic of detachment, it is found that the calculated emissions are especially sensitive to Te.

AB - Abstract The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for Dα, Dβ and Dγ for values of Te and ne characteristic of the range of divertor plasma conditions from attached to weakly detached. Confidence in these values is essential to spectroscopic interpretation of any experiment or modeling effort. Good agreement between experiment and calculated emissions is found for both EIRENE and ADAS calculated emission profiles, confirming their reliability for plasma conditions down to ∼1 eV. For the cold dense plasma conditions characteristic of detachment, it is found that the calculated emissions are especially sensitive to Te.

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OEDGE modeling of DIII-D density scan discharges leading to detachment

Abstract

Funding

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