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

J. Karhunen; M. Groth; D. P. Coster; D. Carralero; L. Guimarais; V. Nikolaeva; S. Potzel; T. Pütterich; F. Reimold; A. Scarabosio; E. Viezzer; M. Wischmeier; ASDEX Upgrade Team

doi:10.1016/j.nme.2019.02.040

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

J. Karhunen^*
, M. Groth
, D. P. Coster
, D. Carralero
, L. Guimarais
, V. Nikolaeva
, S. Potzel
, T. Pütterich
, F. Reimold
, A. Scarabosio
, E. Viezzer
, M. Wischmeier
, ASDEX Upgrade Team

^*Tämän työn vastaava kirjoittaja

Max-Planck-Institut für Plasmaphysik
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
University of Lisbon
University of Seville

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

5 Sitaatiot (Scopus)

204 Lataukset (Pure)

Abstrakti

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.

Alkuperäiskieli	Englanti
Sivut	279-286
Sivumäärä	8
Julkaisu	Nuclear Materials and Energy
Vuosikerta	19
DOI - pysyväislinkit	https://doi.org/10.1016/j.nme.2019.02.040
Tila	Julkaistu - 1 toukok. 2019
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

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 [and from Tekes – the Finnish Funding Agency for Innovation under the FinnFusion Consortium]. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Work performed under EUROfusion WP PFC.

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10.1016/j.nme.2019.02.040Lisenssi: CC BY-NC-ND

1-s2.0-S2352179118301923-mainFinal published version, 1,82 MBLisenssi: CC BY-NC-ND

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Karhunen, J., Groth, M., Coster, D. P., Carralero, D., Guimarais, L., Nikolaeva, V., Potzel, S., Pütterich, T., Reimold, F., Scarabosio, A., Viezzer, E., Wischmeier, M., & ASDEX Upgrade Team (2019). SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport. Nuclear Materials and Energy, 19, 279-286. https://doi.org/10.1016/j.nme.2019.02.040

@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 = "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 and \{ASDEX Upgrade Team\}",

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

year = "2019",

month = may,

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",

}

Karhunen, J, Groth, M, Coster, DP, Carralero, D, Guimarais, L, Nikolaeva, V, Potzel, S, Pütterich, T, Reimold, F, Scarabosio, A, Viezzer, E, Wischmeier, M & ASDEX Upgrade Team 2019, 'SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport', Nuclear Materials and Energy, Vuosikerta 19, Sivut 279-286. https://doi.org/10.1016/j.nme.2019.02.040

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 - 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.

AU - ASDEX Upgrade Team

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 - https://www.scopus.com/pages/publications/85062679228

U2 - 10.1016/j.nme.2019.02.040

DO - 10.1016/j.nme.2019.02.040

M3 - Article

AN - SCOPUS:85062679228

SN - 2352-1791

VL - 19

SP - 279

EP - 286

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

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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