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Skakov M, Sokolov I, Miniyazov A, Tulenbergenov T, Sapatayev Y, Orazgaliyev NA, Bukina O. Changes in structure of the surface and edges of beryllium plates as a result of thermal cycling tests. FUSION ENGINEERING AND DESIGN 2022. [DOI: 10.1016/j.fusengdes.2022.113251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Skakov M, Batyrbekov E, Sokolov I, Miniyazov A, Tulenbergenov T, Sapataev Y, Orazgaliyev N, Bukina O, Zhanbolatova G, Kozhakhmetov Y. Influence of Hydrogen Plasma on the Surface Structure of Beryllium. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6340. [PMID: 36143649 PMCID: PMC9503244 DOI: 10.3390/ma15186340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 06/16/2023]
Abstract
This paper presents the research results of hydrogen plasma effect on the surface structure of the TGP-56 beryllium. In the linear simulator, the operating conditions of the first wall of ITER are simulated. Beryllium was irradiated with hydrogen plasma at surface temperatures of ~360 °C, ~800 °C, and ~1200 °C, depending on its location in the ITER chamber; with a different number of pulses with a duration of each pulse of 500 s. Samples of irradiated beryllium were subjected to a set of material studies. Experimental data were obtained on the change in the structure of the surface and edges of the beryllium samples after the plasma effect. It was found that at normal (2 MW/m2) and increased (4.7 MW/m2) heat fluxes on the first wall of the ITER, the edges and beryllium surface have good resistance to erosion. Under critical conditions close to the melting point, beryllium strongly erodes and evaporates. It has been established that this material has a high resource resistance to hydrogen plasma effect in the ITER under operating conditions.
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Affiliation(s)
- Mazhyn Skakov
- National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Erlan Batyrbekov
- National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Igor Sokolov
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
- The Department of Applied Physics and Heat Power Engineering, Shakarim University, Semey 071412, Kazakhstan
| | - Arman Miniyazov
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
- The Department of Applied Physics and Heat Power Engineering, Shakarim University, Semey 071412, Kazakhstan
| | - Timur Tulenbergenov
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
- The Department of Applied Physics and Heat Power Engineering, Shakarim University, Semey 071412, Kazakhstan
| | - Yerzhan Sapataev
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Nurkhat Orazgaliyev
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Olga Bukina
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Gainiya Zhanbolatova
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
| | - Yernat Kozhakhmetov
- Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Kurchatov 071100, Kazakhstan
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Wong O, Smith R, Nobs CR, Bruce AM. Optimising Foil Selection for Neutron Activation Systems. JOURNAL OF FUSION ENERGY 2022. [DOI: 10.1007/s10894-022-00324-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractNeutron spectrum unfolding using activation foils is currently the primary technique planned for measuring the neutron energy spectrum at the first wall of power-generating fusion reactors. Room for improvement in the effectiveness of current foil selection was identified, and a program produced to select foils procedurally in order to maximise the accuracy of the unfolding procedure. Using Kullback–Leibler Divergence to quantify the accuracy, the spectrum unfolded by the procedurally selected set of foils is found to be more accurate than the spectrum unfolded by a set of foils used in the literature.
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Garrett G, Watson J. Comparison of water, helium, and carbon dioxide as coolants for next generation power plants using TRACE. ANN NUCL ENERGY 2019. [DOI: 10.1016/j.anucene.2018.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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