Measurement of Tritium Distributions on Divertor Tiles used in JET-ITER Like Wall Experiments
| Project/Area Number |
26289353
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Nuclear fusion studies
|
|---|
| Research Institution | University of Toyama |
|---|
Principal Investigator |
Hatano Yuji 富山大学, 研究推進機構 水素同位体科学研究センター, 教授 (80218487)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
大塚 哲平 近畿大学, 理工学部, 准教授 (80315118)
|
|---|
| Project Period (FY) |
2014-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
|
|---|
| Keywords | プラズマ・核融合 / 放射線 / 水素 / 可視化 / タングステン / 構造・機能材料 / イメージングプレート / ベリリウム |
|---|
| Outline of Final Research Achievements |
ITER will use Be as a main chamber wall material and W as a divertor material. To examine the performances of these materials in tokamak environment, JET in EU has performed ITER-Like Wall (ILW) experimental campaigns with Be main chamber tiles and W-coated CFC divertor tiles. In this study, tritium (T) distributions on these tiles were examined using imaging plate (IP) technique and beta-ray induced X-ray spectrometry. Two retention mechanisms were found: (1) co-deposition with Be and other impurities, and (2) implantation into material bulk. T concentrations in Be deposition layers were lower than those in carbon deposition layers formed in previous campaigns with carbon tiles. Far less co-deposition of T on the sides of tiles was observed for ILW tiles compared with carbon tiles. Significantly reduced T retention was expected with Be and W walls in comparison with C walls. Technique to measure T retention in an individual dust particle using IP was also developed.
|
Report
(5 results)
Research Products
(26 results)
-
-
-
-
-
-
-
[Journal Article] Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry2017
Author(s)
Y. Hatano, K. Yumizuru, S. Koivuranta, J. Likonen, M. Hara, M. Matsuyama, S. Masuzaki, M. Tokitani, N. Asakura, K. Isobe, T. Hayashi, A. Baron-Wiechec, A. Widdowson, JET contributors
-
Journal Title
Physica Scripta
Volume: 2017
Pages: 014014-014014
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
-
-
[Presentation] Tritium retention characteristics in dust particles in JET with ITER-like wall2018
Author(s)
T. Otsuka, S. Masuzaki, N. Ashikawa, Y. Hatano, N. Asakura, T. Suzuki, T. Suzuki, K. Isobe, T. Hayashi, Y. Tokitani, Y. Oya, D. Hamaguchi, H. Kurotaki, R. Sakamoto, H. Tanigawa, M. Nakamichi, A. Widdowson, M. Rubel, JET Contributors
Organizer
23rd International Conference on Plasma Surface Interactions in Controlled Fusion Devices
Related Report
Int'l Joint Research
-
-
[Presentation] Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry2017
Author(s)
Y. Hatano, K. Yumizuru, S. Koivuranta, J. Likonen, M. Hara, M. Matsuyama, S. Masuzaki, M. Tokitani, N. Asakura, K. Isobe, T. Hayashi, A. Baron-Wiechec, A. Widdowson, JET contributors
Organizer
16th International Conference on Plasma-Facing Materials and Components for Fusion Applications
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
[Presentation] 2D tritium distribution on tungsten and beryllium tiles used in JET ITER-like wall project2014
Author(s)
Y. Hatano, A. Widdowson, N. Bekris, C. Ayres, A. Baron-Wiechec, J. Likonen, S. Koivuranta, J. Ikonen, K. Yumizuru, JET-EFDA contributors
Organizer
21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices
Place of Presentation
Kanazawa, Japan
Year and Date
2014-05-26 – 2014-05-30
Related Report
-
-
