Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall

JET-EFDA collaborators

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

We model the transport of a beryllium (10Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive analysis of an experiment during the 2011–2012 campaign on JET where three central pieces of a wall tile enriched with 10Be were installed to an inner wall guard limiter (IWGL) of the tokamak. Assuming erosion during the inner-wall limited plasma, the simulations indicate that 10Be is deposited along the IWGLs during the limiter phase which, when assuming further erosion, can lead to high deposition on the inner (high-field side) divertor during the diverted phase. In contrast, beryllium confined in the core plasma during the limiter phase is seen to be predominantly uniformly deposited during the diverted phase on the outer (low-field side) wall limiters and divertor tiles.
Original languageEnglish
Pages (from-to)S612-S615
Number of pages4
JournalJournal of Nuclear Materials
Volume438
Issue numberSupplement
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed
Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
Duration: 21 May 201225 May 2012

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Limiters
Beryllium
Tile
Plasmas
tiles
Erosion
beryllium
erosion
Orbits
markers
orbits
Experiments
simulation

Cite this

JET-EFDA collaborators. / Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall. In: Journal of Nuclear Materials. 2013 ; Vol. 438, No. Supplement. pp. S612-S615.
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abstract = "We model the transport of a beryllium (10Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive analysis of an experiment during the 2011–2012 campaign on JET where three central pieces of a wall tile enriched with 10Be were installed to an inner wall guard limiter (IWGL) of the tokamak. Assuming erosion during the inner-wall limited plasma, the simulations indicate that 10Be is deposited along the IWGLs during the limiter phase which, when assuming further erosion, can lead to high deposition on the inner (high-field side) divertor during the diverted phase. In contrast, beryllium confined in the core plasma during the limiter phase is seen to be predominantly uniformly deposited during the diverted phase on the outer (low-field side) wall limiters and divertor tiles.",
author = "J. Miettunen and M. Groth and T. Kurki-Suonio and H. Bergs{\aa}ker and Jari Likonen and S. Marsen and C. Silva and S. {\"A}k{\"a}slompolo and {JET-EFDA collaborators}",
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Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall. / JET-EFDA collaborators.

In: Journal of Nuclear Materials, Vol. 438, No. Supplement, 2013, p. S612-S615.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall

AU - Miettunen, J.

AU - Groth, M.

AU - Kurki-Suonio, T.

AU - Bergsåker, H.

AU - Likonen, Jari

AU - Marsen, S.

AU - Silva, C.

AU - Äkäslompolo, S.

AU - JET-EFDA collaborators

PY - 2013

Y1 - 2013

N2 - We model the transport of a beryllium (10Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive analysis of an experiment during the 2011–2012 campaign on JET where three central pieces of a wall tile enriched with 10Be were installed to an inner wall guard limiter (IWGL) of the tokamak. Assuming erosion during the inner-wall limited plasma, the simulations indicate that 10Be is deposited along the IWGLs during the limiter phase which, when assuming further erosion, can lead to high deposition on the inner (high-field side) divertor during the diverted phase. In contrast, beryllium confined in the core plasma during the limiter phase is seen to be predominantly uniformly deposited during the diverted phase on the outer (low-field side) wall limiters and divertor tiles.

AB - We model the transport of a beryllium (10Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive analysis of an experiment during the 2011–2012 campaign on JET where three central pieces of a wall tile enriched with 10Be were installed to an inner wall guard limiter (IWGL) of the tokamak. Assuming erosion during the inner-wall limited plasma, the simulations indicate that 10Be is deposited along the IWGLs during the limiter phase which, when assuming further erosion, can lead to high deposition on the inner (high-field side) divertor during the diverted phase. In contrast, beryllium confined in the core plasma during the limiter phase is seen to be predominantly uniformly deposited during the diverted phase on the outer (low-field side) wall limiters and divertor tiles.

U2 - 10.1016/j.jnucmat.2013.01.128

DO - 10.1016/j.jnucmat.2013.01.128

M3 - Article

VL - 438

SP - S612-S615

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - Supplement

ER -