Deuterium recycling and wall retention characteristics during boron powder injection in EAST

Zuo, G. Z.; Wang, Z.; Sun, Z.; Xu, W.; Zhou, Z. T.; Guan, Y. H.; Huang, M.; Maingi, R.; Hu, J. S.

doi:10.1088/2053-1591/ad1355

Title: Deuterium recycling and wall retention characteristics during boron powder injection in EAST

Journal Article · 15 December 2023 · Materials Research Express (Online)

DOI: https://doi.org/10.1088/2053-1591/ad1355 · OSTI ID:2282130

^[1]; Wang, Z. ^[2];

^[3];

^[4]; Zhou, Z. T. ^[5]; Guan, Y. H. ^[5]; Huang, M. ^[1];

^[3]; Hu, J. S. ^[1]

Chinese Academy of Sciences (CAS), Hefei (China)
Chinese Academy of Sciences (CAS), Hefei (China); Anhui University, Hefei (China)
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Hefei Comprehensive National Science Center (China)
Chinese Academy of Sciences (CAS), Hefei (China); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Boron (B), as a low-Z material, is widely employed for wall conditioning to enhance plasma performance in fusion devices. In the Experimental Advanced Superconducting Tokamak, a series of experiments involving real-time B powder injection has been conducted to investigate fuel particle behavior. It was observed that fuel particle recycling decreased with an increase in the amount of B powder injected, resulting in an increase in short-term fuel retention. The fuel recycling decreased by up to 80%, as indicated by divertor neutral pressure and Dα line emission. Furthermore, each B atom exhibited a trapping capacity of 0.3 D particles during B powder injection at a typical flow rate. The real-time B injection had no wall hysteresis effect on D retention, implying that cumulative B injection and deposited film did not affect long-term D retention. The possible mechanism for D retention is the formation of B-C-O-D compounds and co-deposition between B and D particles during discharges. This investigation would be valuable for evaluating T retention when B is used as wall conditioning material in future fusion reactor devices.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 2282130

Journal Information:: Materials Research Express (Online), Vol. 10, Issue 12; ISSN 2053-1591

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

References (18)

Hydrogen isotope retention and recycling in fusion reactor plasma-facing components Causey, Rion A. Journal of Nuclear Materials, Vol. 300, Issue 2-3 https://doi.org/10.1016/S0022-3115(01)00732-2	journal	February 2002
Tritium inventory in ITER plasma-facing materials and tritium removal procedures Roth, Joachim; Tsitrone, Emmanuelle; Loarer, Thierry Plasma Physics and Controlled Fusion, Vol. 50, Issue 10 https://doi.org/10.1088/0741-3335/50/10/103001	journal	August 2008
Fuel retention in tokamaks Loarer, T. Journal of Nuclear Materials, Vol. 390-391 https://doi.org/10.1016/j.jnucmat.2009.01.039	journal	June 2009
Hydrogen blister formation and cracking behavior for various tungsten materials Ueda, Y.; Funabiki, T.; Shimada, T. Journal of Nuclear Materials, Vol. 337-339 https://doi.org/10.1016/j.jnucmat.2004.10.077	journal	March 2005
A boronization system in the JT-60U tokamak: Application of a new method using a less hazardous substance Saidoh, M.; Hiratsuka, H.; Arai, T. Fusion Engineering and Design, Vol. 22, Issue 3 https://doi.org/10.1016/0920-3796(93)90122-X	journal	April 1993
Unraveling the plasma-material interface with real time diagnosis of dynamic boron conditioning in extreme tokamak plasmas Domínguez-Gutiérrez, F. Javier; Bedoya, Felipe; Krstić, Predrag S. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa7b17	journal	July 2017
Tokamak wall coatings Winter, J. Plasma Physics and Controlled Fusion, Vol. 36, Issue 12B https://doi.org/10.1088/0741-3335/36/12B/022	journal	December 1994
Characterization of a-B/C: H films deposited from different boron containing precursors Alimov, V. Kh.; Bogomolov, D. B.; Churaeva, M. N. Journal of Nuclear Materials, Vol. 196-198 https://doi.org/10.1016/S0022-3115(06)80120-0	journal	December 1992
Effect of initial exposure temperature on the deuterium retention and surface blistering in tungsten Wang, Ting; Ren, Mengchong; Zhu, Xiu-Li Nuclear Materials and Energy, Vol. 33 https://doi.org/10.1016/j.nme.2022.101245	journal	October 2022
Wall conditioning in fusion devices and its influence on plasma performance Winter, J. Plasma Physics and Controlled Fusion, Vol. 38, Issue 9 https://doi.org/10.1088/0741-3335/38/9/001	journal	September 1996
A multi-species powder dropper for magnetic fusion applications Nagy, A.; Bortolon, A.; Mauzey, D. M. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039345	journal	October 2018
Studies of lithiumization and boronization of ATJ graphite PFCs in NSTX-U Domínguez-Gutiérrez, F. J.; Bedoya, F.; Krstic, P. S. Nuclear Materials and Energy, Vol. 12 https://doi.org/10.1016/j.nme.2016.12.028	journal	August 2017
Surface morphology changes and deuterium retention in Toughened, Fine-grained Recrystallized Tungsten under high-flux irradiation conditions Oya, M.; Lee, H. T.; Ueda, Y. Journal of Nuclear Materials, Vol. 463 https://doi.org/10.1016/j.jnucmat.2014.11.124	journal	August 2015
Comparison of various wall conditionings on the reduction of H content and particle recycling in EAST Zuo, G. Z.; Hu, J. S.; Zhen, S. Plasma Physics and Controlled Fusion, Vol. 54, Issue 1 https://doi.org/10.1088/0741-3335/54/1/015014	journal	December 2011
Deuterium Uptake in Magnetic-Fusion Devices with Lithium-Conditioned Carbon Walls Krstic, P. S.; Allain, J. P.; Taylor, C. N. Physical Review Letters, Vol. 110, Issue 10 https://doi.org/10.1103/PhysRevLett.110.105001	journal	March 2013
Deuterium retention characteristics in Li film by coating and during flowing liquid Li limiter operation in experimental advanced superconducting tokamak Li, C. L.; Zuo, G. Z.; Maingi, R. Plasma Physics and Controlled Fusion, Vol. 63, Issue 1 https://doi.org/10.1088/1361-6587/abc396	journal	November 2020
Plasma-material interactions in current tokamaks and their implications for next step fusion reactors Federici, G.; Skinner, C. H.; Brooks, J. N. Nuclear Fusion, Vol. 41, Issue 12 https://doi.org/10.1088/0029-5515/41/12/218	journal	December 2001
Suppression of edge localized modes with real-time boron injection using the tungsten divertor in EAST Sun, Z.; Diallo, A.; Maingi, R. Nuclear Fusion, Vol. 61, Issue 1 https://doi.org/10.1088/1741-4326/abc763	journal	December 2020

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36 MATERIALS SCIENCE
boron
recycling
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east

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