Effect of boronization on ohmic plasmas in NSTX

C. H. Skinner; H. W. Kugel; R. Maingi; W. R. Wampler; W. Blanchard; M. G. Bell; R. E. Bell; D. A. Gates; S. M. Kaye; P. LaMarche; B. P. LeBlanc; J. E. Menard; D. Mueller; H. K. Na; N. Nishino; F. Paoletti; S. F. Paul; S. A. Sabbagh; V. A. Soukhanovskii; D. Stutman

doi:10.1088/0029-5515/42/3/313

Effect of boronization on ohmic plasmas in NSTX

C. H. Skinner
, H. W. Kugel
, R. Maingi
, W. R. Wampler
, W. Blanchard
, M. G. Bell
, R. E. Bell
, D. A. Gates
, S. M. Kaye
, P. LaMarche
, B. P. LeBlanc
, J. E. Menard
, D. Mueller
, H. K. Na
, N. Nishino
, F. Paoletti
, S. F. Paul
, S. A. Sabbagh
, V. A. Soukhanovskii
, D. Stutman

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

42 Scopus citations

Abstract

Boronization of NSTX has allowed access to higher density higher confinement plasmas. A glow discharge with 4 mtorr helium and 10% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B + C areal density of 10¹⁸ cm^-2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by a factor of 15, carbon emission reduced by a factor of two and copper reduced to undetectable levels. After boronization, the plasma current flat-top time increased by 70% enabling access to higher density higher confinement plasmas.

Original language	English (US)
Pages (from-to)	329-332
Number of pages	4
Journal	Nuclear Fusion
Volume	42
Issue number	3
DOIs	https://doi.org/10.1088/0029-5515/42/3/313
State	Published - Mar 2002

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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10.1088/0029-5515/42/3/313

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Skinner, C. H., Kugel, H. W., Maingi, R., Wampler, W. R., Blanchard, W., Bell, M. G., Bell, R. E., Gates, D. A., Kaye, S. M., LaMarche, P., LeBlanc, B. P., Menard, J. E., Mueller, D., Na, H. K., Nishino, N., Paoletti, F., Paul, S. F., Sabbagh, S. A., Soukhanovskii, V. A., & Stutman, D. (2002). Effect of boronization on ohmic plasmas in NSTX. Nuclear Fusion, 42(3), 329-332. https://doi.org/10.1088/0029-5515/42/3/313

@article{841f3c971be7465dba083b4e97171ac9,

title = "Effect of boronization on ohmic plasmas in NSTX",

abstract = "Boronization of NSTX has allowed access to higher density higher confinement plasmas. A glow discharge with 4 mtorr helium and 10\% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B + C areal density of 1018 cm-2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by a factor of 15, carbon emission reduced by a factor of two and copper reduced to undetectable levels. After boronization, the plasma current flat-top time increased by 70\% enabling access to higher density higher confinement plasmas.",

author = "Skinner, \{C. H.\} and Kugel, \{H. W.\} and R. Maingi and Wampler, \{W. R.\} and W. Blanchard and Bell, \{M. G.\} and Bell, \{R. E.\} and Gates, \{D. A.\} and Kaye, \{S. M.\} and P. LaMarche and LeBlanc, \{B. P.\} and Menard, \{J. E.\} and D. Mueller and Na, \{H. K.\} and N. Nishino and F. Paoletti and Paul, \{S. F.\} and Sabbagh, \{S. A.\} and Soukhanovskii, \{V. A.\} and D. Stutman",

year = "2002",

month = mar,

doi = "10.1088/0029-5515/42/3/313",

language = "English (US)",

volume = "42",

pages = "329--332",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "3",

}

Skinner, CH, Kugel, HW, Maingi, R, Wampler, WR, Blanchard, W, Bell, MG, Bell, RE, Gates, DA, Kaye, SM, LaMarche, P, LeBlanc, BP , Menard, JE, Mueller, D, Na, HK, Nishino, N, Paoletti, F, Paul, SF, Sabbagh, SA, Soukhanovskii, VA & Stutman, D 2002, 'Effect of boronization on ohmic plasmas in NSTX', Nuclear Fusion, vol. 42, no. 3, pp. 329-332. https://doi.org/10.1088/0029-5515/42/3/313

TY - JOUR

T1 - Effect of boronization on ohmic plasmas in NSTX

AU - Skinner, C. H.

AU - Kugel, H. W.

AU - Maingi, R.

AU - Wampler, W. R.

AU - Blanchard, W.

AU - Bell, M. G.

AU - Bell, R. E.

AU - Gates, D. A.

AU - Kaye, S. M.

AU - LaMarche, P.

AU - LeBlanc, B. P.

AU - Menard, J. E.

AU - Mueller, D.

AU - Na, H. K.

AU - Nishino, N.

AU - Paoletti, F.

AU - Paul, S. F.

AU - Sabbagh, S. A.

AU - Soukhanovskii, V. A.

AU - Stutman, D.

PY - 2002/3

Y1 - 2002/3

N2 - Boronization of NSTX has allowed access to higher density higher confinement plasmas. A glow discharge with 4 mtorr helium and 10% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B + C areal density of 1018 cm-2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by a factor of 15, carbon emission reduced by a factor of two and copper reduced to undetectable levels. After boronization, the plasma current flat-top time increased by 70% enabling access to higher density higher confinement plasmas.

AB - Boronization of NSTX has allowed access to higher density higher confinement plasmas. A glow discharge with 4 mtorr helium and 10% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B + C areal density of 1018 cm-2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by a factor of 15, carbon emission reduced by a factor of two and copper reduced to undetectable levels. After boronization, the plasma current flat-top time increased by 70% enabling access to higher density higher confinement plasmas.

UR - https://www.scopus.com/pages/publications/0036505015

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DO - 10.1088/0029-5515/42/3/313

M3 - Article

AN - SCOPUS:0036505015

SN - 0029-5515

VL - 42

SP - 329

EP - 332

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 3

ER -

Effect of boronization on ohmic plasmas in NSTX

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