Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall

Y. Torikai; G. Kikuchi; A. Owada; Suguru  Masuzaki; Teppei  Otsuka; N. Ashikawa; M. Yajima; Masayuki  Tokitani; Yasuhisa  Oya; S.E. Lee; Y. Hatano; N. Asakura; T. Hayashi; Makoto  Oyaidzu; Jari Likonen; A. Widdowson; Marek Rubel

doi:10.1088/1741-4326/ad0c08

Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall

Y. Torikai (Corresponding Author), G. Kikuchi, A. Owada, Suguru Masuzaki, Teppei Otsuka, N. Ashikawa, M. Yajima, Masayuki Tokitani, Yasuhisa Oya, S.E. Lee, Y. Hatano, N. Asakura, T. Hayashi, Makoto Oyaidzu, Jari Likonen, A. Widdowson, Marek Rubel

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

Abstract

Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.

Original language	English
Article number	016032
Journal	Nuclear Fusion
Volume	64
Issue number	1
DOIs	https://doi.org/10.1088/1741-4326/ad0c08
Publication status	Published - Jan 2024
MoE publication type	A1 Journal article-refereed

Funding

This work was carried out within the framework of the Broader Approach DEMO R&D Activity and the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200—EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor EAN Commission can be held responsible for them. The work has been supported by the Swedish Research Council (VR) (Grants 2015–04844 and 2016–05380) and the UK EPSRC Energy Programme (Grant Number EP/W006839/1). This work was performed with the support and under the auspices of the NIFS Collaboration Research Program (NIFS21KLPF082).

Keywords

tritium
JET
divertor
dust
ITER like wall

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/1741-4326/ad0c08Licence: CC BY

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Torikai, Y., Kikuchi, G., Owada, A., Masuzaki, S., Otsuka, T., Ashikawa, N., Yajima, M., Tokitani, M., Oya, Y., Lee, S. E., Hatano, Y., Asakura, N., Hayashi, T., Oyaidzu, M., Likonen, J., Widdowson, A., & Rubel, M. (2024). Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall. Nuclear Fusion, 64(1), Article 016032. https://doi.org/10.1088/1741-4326/ad0c08

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title = "Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall",

abstract = "Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.",

keywords = "tritium, JET, divertor, dust, ITER like wall",

author = "Y. Torikai and G. Kikuchi and A. Owada and Suguru Masuzaki and Teppei Otsuka and N. Ashikawa and M. Yajima and Masayuki Tokitani and Yasuhisa Oya and S.E. Lee and Y. Hatano and N. Asakura and T. Hayashi and Makoto Oyaidzu and Jari Likonen and A. Widdowson and Marek Rubel",

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Torikai, Y, Kikuchi, G, Owada, A, Masuzaki, S, Otsuka, T, Ashikawa, N, Yajima, M, Tokitani, M, Oya, Y, Lee, SE, Hatano, Y, Asakura, N, Hayashi, T, Oyaidzu, M, Likonen, J, Widdowson, A & Rubel, M 2024, 'Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall', Nuclear Fusion, vol. 64, no. 1, 016032. https://doi.org/10.1088/1741-4326/ad0c08

TY - JOUR

T1 - Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall

AU - Torikai, Y.

AU - Kikuchi, G.

AU - Owada, A.

AU - Masuzaki, Suguru

AU - Otsuka, Teppei

AU - Ashikawa, N.

AU - Yajima, M.

AU - Tokitani, Masayuki

AU - Oya, Yasuhisa

AU - Lee, S.E.

AU - Hatano, Y.

AU - Asakura, N.

AU - Hayashi, T.

AU - Oyaidzu, Makoto

AU - Likonen, Jari

AU - Widdowson, A.

AU - Rubel, Marek

PY - 2024/1

Y1 - 2024/1

N2 - Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.

AB - Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.

KW - tritium

KW - JET

KW - divertor

KW - dust

KW - ITER like wall

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DO - 10.1088/1741-4326/ad0c08

M3 - Article

SN - 0029-5515

VL - 64

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 1

M1 - 016032

ER -

Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall

Abstract

Funding

Keywords

UN SDGs

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