SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

I. Paradela Pérez; A. Scarabosio; M. Groth; M. Wischmeier; F. Reimold; ASDEX Upgrade Team

doi:10.1016/j.nme.2017.01.026

SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

I. Paradela Pérez, A. Scarabosio, M. Groth, M. Wischmeier, F. Reimold, ASDEX Upgrade Team

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

21 Scopus citations

Abstract

An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL). A strong reduction, up to a factor of 100, of the electron pressure is observed close to the separatrix. Sets of L-mode and H-mode like plasma simulations with the SOLPS5.0 code package have supported the interpretation of the experimental observations (e.g., apparent momentum gain, strong radial position dependence) and helped to clarify the role of ion-neutral interactions. The experimental data are in turn used to check the SOLPS predictions, which differ quantitatively, suggesting that important pieces of physics are still not successfully captured by the code.

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Nuclear Materials and Energy
Volume	12
DOIs	https://doi.org/10.1016/j.nme.2017.01.026
State	Published - Aug 2017
Externally published	Yes

Keywords

Divertor detachment
Momentum removal
Scrape-off layer
SOLPS

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title = "SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS",

abstract = "An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL). A strong reduction, up to a factor of 100, of the electron pressure is observed close to the separatrix. Sets of L-mode and H-mode like plasma simulations with the SOLPS5.0 code package have supported the interpretation of the experimental observations (e.g., apparent momentum gain, strong radial position dependence) and helped to clarify the role of ion-neutral interactions. The experimental data are in turn used to check the SOLPS predictions, which differ quantitatively, suggesting that important pieces of physics are still not successfully captured by the code.",

keywords = "Divertor detachment, Momentum removal, Scrape-off layer, SOLPS",

author = "{Paradela P{\'e}rez}, I. and A. Scarabosio and M. Groth and M. Wischmeier and F. Reimold and {Upgrade Team}, ASDEX",

note = "Publisher Copyright: {\textcopyright} 2017 The Authors",

year = "2017",

month = aug,

doi = "10.1016/j.nme.2017.01.026",

language = "English",

volume = "12",

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journal = "Nuclear Materials and Energy",

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TY - JOUR

T1 - SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

AU - Paradela Pérez, I.

AU - Scarabosio, A.

AU - Groth, M.

AU - Wischmeier, M.

AU - Reimold, F.

AU - Upgrade Team, ASDEX

PY - 2017/8

Y1 - 2017/8

N2 - An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL). A strong reduction, up to a factor of 100, of the electron pressure is observed close to the separatrix. Sets of L-mode and H-mode like plasma simulations with the SOLPS5.0 code package have supported the interpretation of the experimental observations (e.g., apparent momentum gain, strong radial position dependence) and helped to clarify the role of ion-neutral interactions. The experimental data are in turn used to check the SOLPS predictions, which differ quantitatively, suggesting that important pieces of physics are still not successfully captured by the code.

AB - An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL). A strong reduction, up to a factor of 100, of the electron pressure is observed close to the separatrix. Sets of L-mode and H-mode like plasma simulations with the SOLPS5.0 code package have supported the interpretation of the experimental observations (e.g., apparent momentum gain, strong radial position dependence) and helped to clarify the role of ion-neutral interactions. The experimental data are in turn used to check the SOLPS predictions, which differ quantitatively, suggesting that important pieces of physics are still not successfully captured by the code.

KW - Divertor detachment

KW - Momentum removal

KW - Scrape-off layer

KW - SOLPS

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DO - 10.1016/j.nme.2017.01.026

M3 - Article

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SN - 2352-1791

VL - 12

SP - 181

EP - 186

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

Abstract

Keywords

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