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

J. Miettunen; M. Groth; T. Kurki-Suonio; H. Bergsåker; Jari Likonen; S. Marsen; C. Silva; S. Äkäslompolo; JET-EFDA contributors

doi:10.1016/j.jnucmat.2013.01.128

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

J. Miettunen^*
, M. Groth
, T. Kurki-Suonio
, H. Bergsåker
, Jari Likonen
, S. Marsen
, C. Silva
, S. Äkäslompolo
, JET-EFDA contributors

^*Corresponding author for this work

Culham Science Centre
Instituto de Plasmas e Fusão Nuclear (IPFN)
Aalto University
KTH Royal Institute of Technology
Max-Planck-Institut für Plasmaphysik (IPP)

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

10 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 language	English
Pages (from-to)	S612-S615
Journal	Journal of Nuclear Materials
Volume	438
Issue number	Supplement
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.128
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed
Event	20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany Duration: 21 May 2012 → 25 May 2012

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10.1016/j.jnucmat.2013.01.128

Cite this

@article{8cf3604d967642669d74579183f2cd43,

title = "Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall",

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 contributors\}",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.128",

language = "English",

volume = "438",

pages = "S612--S615",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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note = "20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices, PSI-20 ; Conference date: 21-05-2012 Through 25-05-2012",

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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 contributors

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

SN - 0022-3115

VL - 438

SP - S612-S615

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - Supplement

T2 - 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 21 May 2012 through 25 May 2012