Advances in boronization on NSTX-Upgrade

Skinner, C. H.; Bedoya, F.; Scotti, F.; Allain, J. P.; Blanchard, W.; Cai, D.; Jaworski, M.; Koel, B. E.

doi:10.1016/j.nme.2016.11.024

Title: Advances in boronization on NSTX-Upgrade

Journal Article · Fri Jan 27 00:00:00 EST 2017 · Nuclear Materials and Energy

DOI:https://doi.org/10.1016/j.nme.2016.11.024· OSTI ID:1349239

Skinner, C. H. ^[1]; Bedoya, F. ^[2]; Scotti, F. ^[3]; Allain, J. P. ^[2]; Blanchard, W. ^[1]; Cai, D. ^[1]; Jaworski, M. ^[1]; Koel, B. E. ^[4]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
University of Illinois at Urbana-Champaign, IL (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Princeton University, NJ (United States)

Boronization has been effective in reducing plasma impurities and enabling access to higher density, higher confinement plasmas in many magnetic fusion devices. The National Spherical Torus eXperiment, NSTX, has recently undergone a major upgrade to NSTX-U in order to develop the physics basis for a ST-based Fusion Nuclear Science Facility (FNSF) with capability for double the toroidal field, plasma current, and NBI heating power and increased pulse duration from 1–1.5 s to 5–8 s. A new deuterated tri-methyl boron conditioning system was implemented together with a novel surface analysis diagnostic. We report on the spatial distribution of the boron deposition versus discharge pressure, gas injection and electrode location. The oxygen concentration of the plasma facing surface was measured by in-vacuo XPS and increased both with plasma exposure and with exposure to trace residual gases. Furthermore, this increase correlated with the rise of oxygen emission from the plasma.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-09CH11466; AC52-07NA27344

OSTI ID:: 1349239

Alternate ID(s):: OSTI ID: 1888628

Report Number(s):: LLNL-JRNL-840086; PII: S2352179116301028; TRN: US1800092

Journal Information:: Nuclear Materials and Energy, Vol. 12, Issue C; Related Information: The digital data for this paper can be found in http://arks.princeton.edu/ark:/88435/dsp018s45qc26p.; ISSN 2352-1791

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 11 works

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References (14)

HAIFA: A modular, fiber‐optic coupled, spectroscopic diagnostic for plasmas Ramsey, Alan T.; Turner, Stephen L. Review of Scientific Instruments, Vol. 58, Issue 7 https://doi.org/10.1063/1.1139441	journal	July 1987
Plasma-surface interaction in the Be/W environment: Conclusions drawn from the JET-ILW for ITER Brezinsek, S. Journal of Nuclear Materials, Vol. 463 https://doi.org/10.1016/j.jnucmat.2014.12.007	journal	August 2015
Borontrimethyl B(CH3)3 — A less hazardous substance for boronization Winter, J.; Esser, H. G.; Reimer, H. Journal of Nuclear Materials, Vol. 176-177 https://doi.org/10.1016/0022-3115(90)90094-4	journal	December 1990
Effect of boronization on ohmic plasmas in NSTX Skinner, C. H.; Kugel, H. W.; Maingi, R. Nuclear Fusion, Vol. 42, Issue 3 https://doi.org/10.1088/0029-5515/42/3/313	journal	March 2002
Deuterium retention in NSTX with lithium conditioning Skinner, C. H.; Allain, J. P.; Blanchard, W. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.08.063	journal	August 2011
Experimental determination of the inelastic mean free path of electrons in solids Lesiak, B.; Jablonski, A.; Prussak, Z. Surface Science, Vol. 223, Issue 1-2 https://doi.org/10.1016/0039-6028(89)90735-8	journal	December 1989
Progress toward commissioning and plasma operation in NSTX-U Ono, M.; Chrzanowski, J.; Dudek, L. Nuclear Fusion, Vol. 55, Issue 7 https://doi.org/10.1088/0029-5515/55/7/073007	journal	June 2015
XPS, SIMS and FTIR-ATR characterization of boronized graphite from the thermonuclear plasma device RFX-mod Ghezzi, F.; Laguardia, L.; Caniello, R. Applied Surface Science, Vol. 354 https://doi.org/10.1016/j.apsusc.2015.04.109	journal	November 2015
Modelling of tokamak glow discharge cleaning II: comparison with experiment and application to ITER Kogut, D.; Douai, D.; Hagelaar, G. Plasma Physics and Controlled Fusion, Vol. 57, Issue 2 https://doi.org/10.1088/0741-3335/57/2/025009	journal	December 2014
Review of in Situ Boronization in Contemporary Tokamaks Buzhinskij, Oleg I.; Semenets, Yuri M. Fusion Technology, Vol. 32, Issue 1 https://doi.org/10.13182/FST97-A19875	journal	August 1997
The Materials Analysis Particle Probe (MAPP) Diagnostic System in NSTX Heim, Bryan; Gonderman, S.; Taylor, C. N. IEEE Transactions on Plasma Science, Vol. 40, Issue 3 https://doi.org/10.1109/TPS.2011.2182062	journal	March 2012
Pulse-by-pulse measurements of dynamic retention and deposition in NSTX Skinner, C. H.; Kugel, H. W.; Roquemore, A. L. Journal of Nuclear Materials, Vol. 363-365 https://doi.org/10.1016/j.jnucmat.2007.01.076	journal	June 2007
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
Boronization in textor Winter, J.; Esser, H. G.; Könen, L. Journal of Nuclear Materials, Vol. 162-164 https://doi.org/10.1016/0022-3115(89)90352-8	journal	April 1989

Cited By (4)

Scenario development during commissioning operations on the National Spherical Torus Experiment Upgrade Battaglia, D. J.; Boyer, M. D.; Gerhardt, S. Nuclear Fusion, Vol. 58, Issue 4 https://doi.org/10.1088/1741-4326/aaa6e0	journal	February 2018
Effect of deuterium irradiation on graphite boronized in the NSTX-U tokamak Bedoya, F.; Allain, J. P.; Dominguez-Gutierrez, F. J. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-38941-9	journal	February 2019
Deuterium uptake and sputtering of simultaneous lithiated, boronized, and oxidized carbon surfaces irradiated by low-energy deuterium Domínguez-Gutiérrez, F. J.; Krstić, P. S.; Allain, J. P. Journal of Applied Physics, Vol. 123, Issue 19 https://doi.org/10.1063/1.5026415	journal	May 2018
Unraveling the surface chemistry processes in lithiated and boronized plasma material interfaces under extreme conditions Krstic, P. S.; Allain, J. P.; Dominguez-Gutierrez, F. J. Matter and Radiation at Extremes, Vol. 3, Issue 4 https://doi.org/10.1016/j.mre.2018.03.003	journal	July 2018

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