Impact of tungsten charge state bundling on scrape-off layer transport simulations in JET L-mode

H. A. Kumpulainen; M. Groth; M. Fontell; A. Jarvinen; G. Corrigan; D. Harting; JET Contributors

Impact of tungsten charge state bundling on scrape-off layer transport simulations in JET L-mode

H. A. Kumpulainen, M. Groth, M. Fontell, A. Jarvinen, G. Corrigan, D. Harting, JET Contributors

Research output: Contribution to conference › Paper › Scientific › peer-review

Abstract

The bundling of the 74 tungsten ion charge states into 6 fluid species in the coupled multi-fluid plasma/kinetic neutral code EDGE2D-EIRENE is shown to decrease the predicted average tungsten charge in the JET main chamber scrape-off layer by up to 40%, compared to mutually consistent predictions using the Monte Carlo impurity transport code DIVIMP and 22 tungsten fluid species in EDGE2D-EIRENE. The tungsten concentrations predicted by DIVIMP in the pedestal region are consistently ~50% higher than by EDGE2DEIRENE with 6 tungsten fluids under attached divertor conditions, whereas under partially detached conditions the stochastic errors exceed the systematic disagreement between the two codes.

Original language	English
Publication status	Published - 2019
MoE publication type	Not Eligible
Event	European Physical Society Conference on Plasma Physics - Milan, Italy Duration: 8 Jul 2019 → 12 Jul 2019 Conference number: 46

Conference

Conference	European Physical Society Conference on Plasma Physics
Abbreviated title	EPS
Country/Territory	Italy
City	Milan
Period	08/07/2019 → 12/07/2019

Cite this

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title = "Impact of tungsten charge state bundling on scrape-off layer transport simulations in JET L-mode",

abstract = "The bundling of the 74 tungsten ion charge states into 6 fluid species in the coupled multi-fluid plasma/kinetic neutral code EDGE2D-EIRENE is shown to decrease the predicted average tungsten charge in the JET main chamber scrape-off layer by up to 40%, compared to mutually consistent predictions using the Monte Carlo impurity transport code DIVIMP and 22 tungsten fluid species in EDGE2D-EIRENE. The tungsten concentrations predicted by DIVIMP in the pedestal region are consistently ~50% higher than by EDGE2DEIRENE with 6 tungsten fluids under attached divertor conditions, whereas under partially detached conditions the stochastic errors exceed the systematic disagreement between the two codes.",

author = "Kumpulainen, {H. A.} and M. Groth and M. Fontell and A. Jarvinen and G. Corrigan and D. Harting and {JET Contributors}",

year = "2019",

language = "English",

note = "European Physical Society Conference on Plasma Physics, EPS ; Conference date: 08-07-2019 Through 12-07-2019",

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TY - CONF

T1 - Impact of tungsten charge state bundling on scrape-off layer transport simulations in JET L-mode

AU - Kumpulainen, H. A.

AU - Groth, M.

AU - Fontell, M.

AU - Jarvinen, A.

AU - Corrigan, G.

AU - Harting, D.

AU - JET Contributors

N1 - Conference code: 46

PY - 2019

Y1 - 2019

N2 - The bundling of the 74 tungsten ion charge states into 6 fluid species in the coupled multi-fluid plasma/kinetic neutral code EDGE2D-EIRENE is shown to decrease the predicted average tungsten charge in the JET main chamber scrape-off layer by up to 40%, compared to mutually consistent predictions using the Monte Carlo impurity transport code DIVIMP and 22 tungsten fluid species in EDGE2D-EIRENE. The tungsten concentrations predicted by DIVIMP in the pedestal region are consistently ~50% higher than by EDGE2DEIRENE with 6 tungsten fluids under attached divertor conditions, whereas under partially detached conditions the stochastic errors exceed the systematic disagreement between the two codes.

AB - The bundling of the 74 tungsten ion charge states into 6 fluid species in the coupled multi-fluid plasma/kinetic neutral code EDGE2D-EIRENE is shown to decrease the predicted average tungsten charge in the JET main chamber scrape-off layer by up to 40%, compared to mutually consistent predictions using the Monte Carlo impurity transport code DIVIMP and 22 tungsten fluid species in EDGE2D-EIRENE. The tungsten concentrations predicted by DIVIMP in the pedestal region are consistently ~50% higher than by EDGE2DEIRENE with 6 tungsten fluids under attached divertor conditions, whereas under partially detached conditions the stochastic errors exceed the systematic disagreement between the two codes.

UR - http://www.scopus.com/inward/record.url?scp=85084024427&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85084024427

T2 - European Physical Society Conference on Plasma Physics

Y2 - 8 July 2019 through 12 July 2019

ER -

Impact of tungsten charge state bundling on scrape-off layer transport simulations in JET L-mode

Abstract

Conference

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