EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

M. Groth; B. Lomanowski; the DIII-D team

doi:10.1016/j.nme.2019.02.035

EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

M. Groth^*
, B. Lomanowski
, the DIII-D team

^*Tämän työn vastaava kirjoittaja

UC-San-Diego
Lawrence Livermore National Laboratory
General Atomics
Forschungszentrum Jülich GmbH
JET
Oak Ridge Natl Lab, Oak Ridge National Laboratory, United States Department of Energy (DOE)
Sandia National Laboratories

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

27 Sitaatiot (Scopus)

195 Lataukset (Pure)

Abstrakti

The contributions of deuterium molecular emission to the total deuterium radiation was assessed in DIII-D ohmically-confined plasmas in high-recycling divertor conditions. Radial profiles of the deuterium Ly-α line intensity across the low-field side divertor leg were obtained with the recently installed divertor Survey Poor Resolution, Extended Spectrometer [1]. A high-resolution spectrometer was used to measure the poloidal profiles of the deuterium Balmer-α and the deuterium Fulcher-α band intensity in the visible wavelength range. The scrape-off layer plasma and neutral distributions were simulated using the edge fluid EDGE2D-EIRENE [2], and the numerical solutions constrained utilizing Thomson scattering and Langmuir probe measurements at the low-field side midplane and the divertor target plate. The studies show that for these conditions molecular emission plays a negligible role in the total radiative power balance of the low-field side divertor, but molecular processes are important when evaluating deuterium Balmer-α line intensity for code-experiment validation.

Alkuperäiskieli	Englanti
Sivut	211-217
Sivumäärä	7
Julkaisu	Nuclear Materials and Energy
Vuosikerta	19
DOI - pysyväislinkit	https://doi.org/10.1016/j.nme.2019.02.035
Tila	Julkaistu - 1 toukok. 2019
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

This work was supported by US DOE under contract nos. DE-FC02-04ER54698 , DE-AC52-07NA27344 , and DE-FG92-07ER54917 . The 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 . This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement number 633053 . The views and opinions expressed herein do not necessarily reflect those of the European Commission.

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SDG 7 – Edullinen ja puhdas energia

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10.1016/j.nme.2019.02.035

1-s2.0-S2352179118302187-mainFinal published version, 1,99 MBLisenssi: CC BY-NC-ND

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@article{4e64f0e0e5b24583bf659e372556435b,

title = "EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas",

abstract = "The contributions of deuterium molecular emission to the total deuterium radiation was assessed in DIII-D ohmically-confined plasmas in high-recycling divertor conditions. Radial profiles of the deuterium Ly-α line intensity across the low-field side divertor leg were obtained with the recently installed divertor Survey Poor Resolution, Extended Spectrometer [1]. A high-resolution spectrometer was used to measure the poloidal profiles of the deuterium Balmer-α and the deuterium Fulcher-α band intensity in the visible wavelength range. The scrape-off layer plasma and neutral distributions were simulated using the edge fluid EDGE2D-EIRENE [2], and the numerical solutions constrained utilizing Thomson scattering and Langmuir probe measurements at the low-field side midplane and the divertor target plate. The studies show that for these conditions molecular emission plays a negligible role in the total radiative power balance of the low-field side divertor, but molecular processes are important when evaluating deuterium Balmer-α line intensity for code-experiment validation.",

keywords = "Deuterium atomic and molecular emission, DIII-D, Divertor edge fluid simulations, EDGE2D-EIRENE, EIRENE, Lyman-Werner and Fulcher band",

author = "M. Groth and Hollmann, \{E. M.\} and Jaervinen, \{A. E.\} and Leonard, \{A. W.\} and McLean, \{A. G.\} and Samuell, \{C. M.\} and D. Reiter and Allen, \{S. L.\} and P. Boerner and S. Brezinsek and I. Bykov and G. Corrigan and Fenstermacher, \{M. E.\} and D. Harting and Lasnier, \{C. J.\} and B. Lomanowski and Makowski, \{M. A.\} and Shafer, \{M. W.\} and Huiqian Wang and Watkins, \{J. G.\} and S. Wiesen and Wilcox, \{R. S.\} and \{the DIII-D team\}",

note = "| openaire: EC/H2020/633053/EU//EUROfusion ",

year = "2019",

month = may,

day = "1",

doi = "10.1016/j.nme.2019.02.035",

language = "English",

volume = "19",

pages = "211--217",

journal = "Nuclear Materials and Energy",

issn = "2352-1791",

publisher = "Elsevier",

}

TY - JOUR

T1 - EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

AU - Groth, M.

AU - Hollmann, E. M.

AU - Jaervinen, A. E.

AU - Leonard, A. W.

AU - McLean, A. G.

AU - Samuell, C. M.

AU - Reiter, D.

AU - Allen, S. L.

AU - Boerner, P.

AU - Brezinsek, S.

AU - Bykov, I.

AU - Corrigan, G.

AU - Fenstermacher, M. E.

AU - Harting, D.

AU - Lasnier, C. J.

AU - Lomanowski, B.

AU - Makowski, M. A.

AU - Shafer, M. W.

AU - Wang, Huiqian

AU - Watkins, J. G.

AU - Wiesen, S.

AU - Wilcox, R. S.

AU - the DIII-D team

N1 - | openaire: EC/H2020/633053/EU//EUROfusion

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The contributions of deuterium molecular emission to the total deuterium radiation was assessed in DIII-D ohmically-confined plasmas in high-recycling divertor conditions. Radial profiles of the deuterium Ly-α line intensity across the low-field side divertor leg were obtained with the recently installed divertor Survey Poor Resolution, Extended Spectrometer [1]. A high-resolution spectrometer was used to measure the poloidal profiles of the deuterium Balmer-α and the deuterium Fulcher-α band intensity in the visible wavelength range. The scrape-off layer plasma and neutral distributions were simulated using the edge fluid EDGE2D-EIRENE [2], and the numerical solutions constrained utilizing Thomson scattering and Langmuir probe measurements at the low-field side midplane and the divertor target plate. The studies show that for these conditions molecular emission plays a negligible role in the total radiative power balance of the low-field side divertor, but molecular processes are important when evaluating deuterium Balmer-α line intensity for code-experiment validation.

AB - The contributions of deuterium molecular emission to the total deuterium radiation was assessed in DIII-D ohmically-confined plasmas in high-recycling divertor conditions. Radial profiles of the deuterium Ly-α line intensity across the low-field side divertor leg were obtained with the recently installed divertor Survey Poor Resolution, Extended Spectrometer [1]. A high-resolution spectrometer was used to measure the poloidal profiles of the deuterium Balmer-α and the deuterium Fulcher-α band intensity in the visible wavelength range. The scrape-off layer plasma and neutral distributions were simulated using the edge fluid EDGE2D-EIRENE [2], and the numerical solutions constrained utilizing Thomson scattering and Langmuir probe measurements at the low-field side midplane and the divertor target plate. The studies show that for these conditions molecular emission plays a negligible role in the total radiative power balance of the low-field side divertor, but molecular processes are important when evaluating deuterium Balmer-α line intensity for code-experiment validation.

KW - Deuterium atomic and molecular emission

KW - DIII-D

KW - Divertor edge fluid simulations

KW - EDGE2D-EIRENE

KW - EIRENE

KW - Lyman-Werner and Fulcher band

UR - https://www.scopus.com/pages/publications/85062352279

U2 - 10.1016/j.nme.2019.02.035

DO - 10.1016/j.nme.2019.02.035

M3 - Article

AN - SCOPUS:85062352279

SN - 2352-1791

VL - 19

SP - 211

EP - 217

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

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