Thermal desorption spectrometry of beryllium plasma facing tiles exposed in the JET tokamak

Aleksandra Baron-Wiechec; Kalle Heinola; Jari Likonen; Eduardo de Alves; Norberto Catarino; Valeria Corregidor; Paul Coad; Ionut Jepu; Guy Matthews; Anna Widdowson

doi:10.1016/j.fusengdes.2018.05.075

Thermal desorption spectrometry of beryllium plasma facing tiles exposed in the JET tokamak

Aleksandra Baron-Wiechec (Corresponding Author), Kalle Heinola, Jari Likonen, Eduardo de Alves, Norberto Catarino, Valeria Corregidor, Paul Coad, Ionut Jepu, Guy Matthews, Anna Widdowson

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

15 Citations (Scopus)

Abstract

The phenomena of retention and de-trapping of deuterium (D) and tritium (T) in plasma facing components (PFC) and supporting structures must be understood in order to limit or control total T inventory in larger future fusion devices such as ITER, DEMO and commercial machines. The goal of this paper is to present details of the thermal desorption spectrometry (TDS) system applied in total fuel retention assessment of PFC at the Joint European Torus (JET). Examples of TDS results from beryllium (Be) wall tile samples exposed to JET plasma in PFC configuration mirroring the planned ITER PFC is shown for the first time. The method for quantifying D by comparison of results from a sample of known D content was confirmed acceptable. The D inventory calculations obtained from Ion Beam Analysis (IBA) and TDS agree well within an error associated with the extrapolation from very few data points to a large surface area.

Original language	English
Pages (from-to)	135–141
Number of pages	7
Journal	Fusion Engineering and Design
Volume	133
DOIs	https://doi.org/10.1016/j.fusengdes.2018.05.075
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

Keywords

Thermal desorption spectrometry
Beryllium
Plasma facing component
Fuel retention
JET
Tritium

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10.1016/j.fusengdes.2018.05.075

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title = "Thermal desorption spectrometry of beryllium plasma facing tiles exposed in the JET tokamak",

abstract = "The phenomena of retention and de-trapping of deuterium (D) and tritium (T) in plasma facing components (PFC) and supporting structures must be understood in order to limit or control total T inventory in larger future fusion devices such as ITER, DEMO and commercial machines. The goal of this paper is to present details of the thermal desorption spectrometry (TDS) system applied in total fuel retention assessment of PFC at the Joint European Torus (JET). Examples of TDS results from beryllium (Be) wall tile samples exposed to JET plasma in PFC configuration mirroring the planned ITER PFC is shown for the first time. The method for quantifying D by comparison of results from a sample of known D content was confirmed acceptable. The D inventory calculations obtained from Ion Beam Analysis (IBA) and TDS agree well within an error associated with the extrapolation from very few data points to a large surface area.",

keywords = "Thermal desorption spectrometry, Beryllium, Plasma facing component, Fuel retention, JET, Tritium",

author = "Aleksandra Baron-Wiechec and Kalle Heinola and Jari Likonen and {de Alves}, Eduardo and Norberto Catarino and Valeria Corregidor and Paul Coad and Ionut Jepu and Guy Matthews and Anna Widdowson",

year = "2018",

doi = "10.1016/j.fusengdes.2018.05.075",

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AU - Baron-Wiechec, Aleksandra

AU - Heinola, Kalle

AU - Likonen, Jari

AU - de Alves, Eduardo

AU - Catarino, Norberto

AU - Corregidor, Valeria

AU - Coad, Paul

AU - Jepu, Ionut

AU - Matthews, Guy

AU - Widdowson, Anna

PY - 2018

Y1 - 2018

N2 - The phenomena of retention and de-trapping of deuterium (D) and tritium (T) in plasma facing components (PFC) and supporting structures must be understood in order to limit or control total T inventory in larger future fusion devices such as ITER, DEMO and commercial machines. The goal of this paper is to present details of the thermal desorption spectrometry (TDS) system applied in total fuel retention assessment of PFC at the Joint European Torus (JET). Examples of TDS results from beryllium (Be) wall tile samples exposed to JET plasma in PFC configuration mirroring the planned ITER PFC is shown for the first time. The method for quantifying D by comparison of results from a sample of known D content was confirmed acceptable. The D inventory calculations obtained from Ion Beam Analysis (IBA) and TDS agree well within an error associated with the extrapolation from very few data points to a large surface area.

AB - The phenomena of retention and de-trapping of deuterium (D) and tritium (T) in plasma facing components (PFC) and supporting structures must be understood in order to limit or control total T inventory in larger future fusion devices such as ITER, DEMO and commercial machines. The goal of this paper is to present details of the thermal desorption spectrometry (TDS) system applied in total fuel retention assessment of PFC at the Joint European Torus (JET). Examples of TDS results from beryllium (Be) wall tile samples exposed to JET plasma in PFC configuration mirroring the planned ITER PFC is shown for the first time. The method for quantifying D by comparison of results from a sample of known D content was confirmed acceptable. The D inventory calculations obtained from Ion Beam Analysis (IBA) and TDS agree well within an error associated with the extrapolation from very few data points to a large surface area.

KW - Thermal desorption spectrometry

KW - Beryllium

KW - Plasma facing component

KW - Fuel retention

KW - JET

KW - Tritium

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DO - 10.1016/j.fusengdes.2018.05.075

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VL - 133

SP - 135

EP - 141

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Thermal desorption spectrometry of beryllium plasma facing tiles exposed in the JET tokamak

Abstract

Keywords

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