Recent results from the National Spherical Torus Experiment

R. Maingi; M. G. Bell; R. E. Bell; J. Bialek; C. Bourdelle; C. E. Bush; D. S. Darrow; E. D. Fredrickson; D. A. Gates; M. Gilmore; T. Gray; T. R. Jarboe; D. W. Johnson; R. Kaita; S. M. Kaye; S. Kubota; H. W. Kugel; B. P. LeBlanc; R. J. Maqueda; D. Mastrovito; S. S. Medley; J. E. Menard; D. Mueller; B. A. Nelson; M. Ono; F. Paoletti; H. K. Park; S. F. Paul; T. Peebles; Y. K.M. Peng; C. K. Phillips; R. Raman; A. L. Rosenberg; A. L. Roquemore; P. M. Ryan; S. A. Sabbagh; C. H. Skinner; V. A. Soukhanovskii; D. Stutman; D. W. Swain; E. J. Synakowski; G. Taylor; J. Wilgen; J. R. Wilson; G. A. Wurden; S. J. Zweben

doi:10.1088/0741-3335/45/5/310

Recent results from the National Spherical Torus Experiment

R. Maingi, M. G. Bell, R. E. Bell, J. Bialek, C. Bourdelle, C. E. Bush, D. S. Darrow, E. D. Fredrickson, D. A. Gates, M. Gilmore, T. Gray, T. R. Jarboe, D. W. Johnson, R. Kaita, S. M. Kaye, S. Kubota, H. W. Kugel, B. P. LeBlanc, R. J. Maqueda, D. MastrovitoS. S. Medley, J. E. Menard, D. Mueller, B. A. Nelson, M. Ono, F. Paoletti, H. K. Park, S. F. Paul, T. Peebles, Y. K.M. Peng, C. K. Phillips, R. Raman, A. L. Rosenberg, A. L. Roquemore, P. M. Ryan, S. A. Sabbagh, C. H. Skinner, V. A. Soukhanovskii, D. Stutman, D. W. Swain, E. J. Synakowski, G. Taylor, J. Wilgen, J. R. Wilson, G. A. Wurden, S. J. Zweben

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Abstract

The National Spherical Torus Experiment (NSTX) is a low aspect-ratio fusion research facility whose research goal is to make a determination of the attractiveness of the spherical torus concept in the areas of high-β stability, confinement, current drive, and divertor physics. Remarkable progress was made in extending the operational regime of the device in FY 2002. In brief, β_t of 34% and β_N of 6.5 were achieved. H-mode became the main operational regime, and energy confinement exceeded conventional aspect-ratio tokamak scalings. Heating was demonstrated with the radiofrequency antenna, and signatures of current drive were observed. Current initiation with coaxial helicity injection produced discharges of 400 kA, and first measurements of divertor heat flux profiles in H-mode were made.

Original language	English
Pages (from-to)	657-669
Number of pages	13
Journal	Plasma Physics and Controlled Fusion
Volume	45
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/45/5/310
State	Published - May 2003
Externally published	Yes

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Maingi, R., Bell, M. G., Bell, R. E., Bialek, J., Bourdelle, C., Bush, C. E., Darrow, D. S., Fredrickson, E. D., Gates, D. A., Gilmore, M., Gray, T., Jarboe, T. R., Johnson, D. W., Kaita, R., Kaye, S. M., Kubota, S., Kugel, H. W., LeBlanc, B. P., Maqueda, R. J., ... Zweben, S. J. (2003). Recent results from the National Spherical Torus Experiment. Plasma Physics and Controlled Fusion, 45(5), 657-669. https://doi.org/10.1088/0741-3335/45/5/310

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title = "Recent results from the National Spherical Torus Experiment",

abstract = "The National Spherical Torus Experiment (NSTX) is a low aspect-ratio fusion research facility whose research goal is to make a determination of the attractiveness of the spherical torus concept in the areas of high-β stability, confinement, current drive, and divertor physics. Remarkable progress was made in extending the operational regime of the device in FY 2002. In brief, βt of 34% and βN of 6.5 were achieved. H-mode became the main operational regime, and energy confinement exceeded conventional aspect-ratio tokamak scalings. Heating was demonstrated with the radiofrequency antenna, and signatures of current drive were observed. Current initiation with coaxial helicity injection produced discharges of 400 kA, and first measurements of divertor heat flux profiles in H-mode were made.",

author = "R. Maingi and Bell, {M. G.} and Bell, {R. E.} and J. Bialek and C. Bourdelle and Bush, {C. E.} and Darrow, {D. S.} and Fredrickson, {E. D.} and Gates, {D. A.} and M. Gilmore and T. Gray and Jarboe, {T. R.} and Johnson, {D. W.} and R. Kaita and Kaye, {S. M.} and S. Kubota and Kugel, {H. W.} and LeBlanc, {B. P.} and Maqueda, {R. J.} and D. Mastrovito and Medley, {S. S.} and Menard, {J. E.} and D. Mueller and Nelson, {B. A.} and M. Ono and F. Paoletti and Park, {H. K.} and Paul, {S. F.} and T. Peebles and Peng, {Y. K.M.} and Phillips, {C. K.} and R. Raman and Rosenberg, {A. L.} and Roquemore, {A. L.} and Ryan, {P. M.} and Sabbagh, {S. A.} and Skinner, {C. H.} and Soukhanovskii, {V. A.} and D. Stutman and Swain, {D. W.} and Synakowski, {E. J.} and G. Taylor and J. Wilgen and Wilson, {J. R.} and Wurden, {G. A.} and Zweben, {S. J.}",

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Maingi, R, Bell, MG, Bell, RE, Bialek, J, Bourdelle, C, Bush, CE, Darrow, DS, Fredrickson, ED, Gates, DA, Gilmore, M, Gray, T, Jarboe, TR, Johnson, DW, Kaita, R, Kaye, SM, Kubota, S, Kugel, HW, LeBlanc, BP, Maqueda, RJ, Mastrovito, D, Medley, SS, Menard, JE, Mueller, D, Nelson, BA, Ono, M, Paoletti, F, Park, HK, Paul, SF, Peebles, T, Peng, YKM, Phillips, CK, Raman, R, Rosenberg, AL, Roquemore, AL, Ryan, PM, Sabbagh, SA, Skinner, CH, Soukhanovskii, VA, Stutman, D, Swain, DW, Synakowski, EJ, Taylor, G, Wilgen, J, Wilson, JR, Wurden, GA & Zweben, SJ 2003, 'Recent results from the National Spherical Torus Experiment', Plasma Physics and Controlled Fusion, vol. 45, no. 5, pp. 657-669. https://doi.org/10.1088/0741-3335/45/5/310

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AU - Maingi, R.

AU - Bell, M. G.

AU - Bell, R. E.

AU - Bialek, J.

AU - Bourdelle, C.

AU - Bush, C. E.

AU - Darrow, D. S.

AU - Fredrickson, E. D.

AU - Gates, D. A.

AU - Gilmore, M.

AU - Gray, T.

AU - Jarboe, T. R.

AU - Johnson, D. W.

AU - Kaita, R.

AU - Kaye, S. M.

AU - Kubota, S.

AU - Kugel, H. W.

AU - LeBlanc, B. P.

AU - Maqueda, R. J.

AU - Mastrovito, D.

AU - Medley, S. S.

AU - Menard, J. E.

AU - Mueller, D.

AU - Nelson, B. A.

AU - Ono, M.

AU - Paoletti, F.

AU - Park, H. K.

AU - Paul, S. F.

AU - Peebles, T.

AU - Peng, Y. K.M.

AU - Phillips, C. K.

AU - Raman, R.

AU - Rosenberg, A. L.

AU - Roquemore, A. L.

AU - Ryan, P. M.

AU - Sabbagh, S. A.

AU - Skinner, C. H.

AU - Soukhanovskii, V. A.

AU - Stutman, D.

AU - Swain, D. W.

AU - Synakowski, E. J.

AU - Taylor, G.

AU - Wilgen, J.

AU - Wilson, J. R.

AU - Wurden, G. A.

AU - Zweben, S. J.

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AB - The National Spherical Torus Experiment (NSTX) is a low aspect-ratio fusion research facility whose research goal is to make a determination of the attractiveness of the spherical torus concept in the areas of high-β stability, confinement, current drive, and divertor physics. Remarkable progress was made in extending the operational regime of the device in FY 2002. In brief, βt of 34% and βN of 6.5 were achieved. H-mode became the main operational regime, and energy confinement exceeded conventional aspect-ratio tokamak scalings. Heating was demonstrated with the radiofrequency antenna, and signatures of current drive were observed. Current initiation with coaxial helicity injection produced discharges of 400 kA, and first measurements of divertor heat flux profiles in H-mode were made.

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SN - 0741-3335

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EP - 669

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

ER -

Recent results from the National Spherical Torus Experiment

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