SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport

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SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport. / the ASDEX Upgrade Team ; Karhunen, J.; Groth, M.

In: Nuclear Materials and Energy, Vol. 19, 01.05.2019, p. 279-286.

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@article{a6147ac0743443058f6ddf7b6e196fc7,
title = "SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport",
abstract = "SOLPS 5.0 simulations assuming convection-dominated radial ion transport show qualitative and quantitative agreement with measurements of detached high-field side (HFS) divertor conditions for unseeded low-power L-mode plasmas in ASDEX Upgrade, while simultaneously maintaining a reasonable match to the density and temperature measurements at the low-field side (LFS) and HFS midplanes within the scatter of the data. The decreased diffusive transport from the high-density region in the HFS divertor volume across the separatrix into the core enables spatial extension of the high-density front to above the X-point in agreement with spectroscopic measurements. The suppressed ion fuelling from this region into the core plasma allows increasing the neutral D 2 fuelling to experimental levels, leading to agreement with the measured sub-divertor neutral fluxes within 30{\%}. Detachment of the HFS divertor is observed as a significant decrease of the target ion flux and as reproduction of the characteristic roll-over behaviour of the integrated target ion current at increasing upstream density.",
author = "{the ASDEX Upgrade Team} and J. Karhunen and M. Groth and Coster, {D. P.} and D. Carralero and L. Guimarais and V. Nikolaeva and S. Potzel and T. P{\"u}tterich and F. Reimold and A. Scarabosio and E. Viezzer and M. Wischmeier",
note = "| openaire: EC/H2020/633053/EU//EUROfusion",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.nme.2019.02.040",
language = "English",
volume = "19",
pages = "279--286",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier Science Publishers BV",

}

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TY - JOUR

T1 - SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport

AU - the ASDEX Upgrade Team

AU - Karhunen, J.

AU - Groth, M.

AU - Coster, D. P.

AU - Carralero, D.

AU - Guimarais, L.

AU - Nikolaeva, V.

AU - Potzel, S.

AU - Pütterich, T.

AU - Reimold, F.

AU - Scarabosio, A.

AU - Viezzer, E.

AU - Wischmeier, M.

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

PY - 2019/5/1

Y1 - 2019/5/1

N2 - SOLPS 5.0 simulations assuming convection-dominated radial ion transport show qualitative and quantitative agreement with measurements of detached high-field side (HFS) divertor conditions for unseeded low-power L-mode plasmas in ASDEX Upgrade, while simultaneously maintaining a reasonable match to the density and temperature measurements at the low-field side (LFS) and HFS midplanes within the scatter of the data. The decreased diffusive transport from the high-density region in the HFS divertor volume across the separatrix into the core enables spatial extension of the high-density front to above the X-point in agreement with spectroscopic measurements. The suppressed ion fuelling from this region into the core plasma allows increasing the neutral D 2 fuelling to experimental levels, leading to agreement with the measured sub-divertor neutral fluxes within 30%. Detachment of the HFS divertor is observed as a significant decrease of the target ion flux and as reproduction of the characteristic roll-over behaviour of the integrated target ion current at increasing upstream density.

AB - SOLPS 5.0 simulations assuming convection-dominated radial ion transport show qualitative and quantitative agreement with measurements of detached high-field side (HFS) divertor conditions for unseeded low-power L-mode plasmas in ASDEX Upgrade, while simultaneously maintaining a reasonable match to the density and temperature measurements at the low-field side (LFS) and HFS midplanes within the scatter of the data. The decreased diffusive transport from the high-density region in the HFS divertor volume across the separatrix into the core enables spatial extension of the high-density front to above the X-point in agreement with spectroscopic measurements. The suppressed ion fuelling from this region into the core plasma allows increasing the neutral D 2 fuelling to experimental levels, leading to agreement with the measured sub-divertor neutral fluxes within 30%. Detachment of the HFS divertor is observed as a significant decrease of the target ion flux and as reproduction of the characteristic roll-over behaviour of the integrated target ion current at increasing upstream density.

UR - http://www.scopus.com/inward/record.url?scp=85062679228&partnerID=8YFLogxK

U2 - 10.1016/j.nme.2019.02.040

DO - 10.1016/j.nme.2019.02.040

M3 - Article

VL - 19

SP - 279

EP - 286

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

ID: 32620882