Impurity levels and power loading in the pdx tokamak with high power neutral beam injection

R. J. Fonck; M. Bell; K. Bol; K. Brau; R. Budny; J. L. Cecchi; S. Cohen; S. Davis; H. F. Dylla; R. Goldston; B. Grek; R. J. Hawryluk; J. Hirschberg; D. Johnson; R. Hülse; R. Kaita; S. Kaye; R. J. Knize; H. Kugel; D. Manos; D. Mansfield; K. Mcguire; D. Mueller; K. Oasa; M. Okabayashi; D. K. Owens; J. Ramette; R. Reeves; M. Reusch; G. Schmidt; S. sesnic; S. Suckewer; H. Takahashi; F. Tenney; P. Thomas; M. Ulrickson; R. Yelle

doi:10.1016/0022-3115(82)90232-X

Impurity levels and power loading in the pdx tokamak with high power neutral beam injection

R. J. Fonck, M. Bell, K. Bol, K. Brau, R. Budny, J. L. Cecchi, S. Cohen, S. Davis, H. F. Dylla, R. Goldston, B. Grek, R. J. Hawryluk, J. Hirschberg, D. Johnson, R. Hülse, R. Kaita, S. Kaye, R. J. Knize, H. Kugel, D. ManosD. Mansfield, K. Mcguire, D. Mueller, K. Oasa, M. Okabayashi, D. K. Owens, J. Ramette, R. Reeves, M. Reusch, G. Schmidt, S. sesnic, S. Suckewer, H. Takahashi, F. Tenney, P. Thomas, M. Ulrickson, R. Yelle

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36 Scopus citations

Abstract

The PDX tokamak provides an experimental facility for the direct comparison of various impurity control techniques under reactor-like conditions. Four neutral beam lines inject > 6 MW for 300 ms. Carbon rail limiter discharges have been used to test the effectiveness of perpendicular injection, but non-disruptive full power operation for > 100 ms is difficult without extensive conditioning. Initial tests of a toroidal bumper limiter indicate reduced power loading and roughly similar impurity levels compared to the carbon rail limiter discharges. Poloidal divertor discharges with up to 5 MW of injected power are cleaner than similar circular discharges, and the power is deposited in a remote divertor chamber. High density divertor operation indicates a reduction of impurity flow velocity in the divertor and enhanced recycling in the divertor region during neutral injection.

Original language	English (US)
Pages (from-to)	343-354
Number of pages	12
Journal	Journal of Nuclear Materials
Volume	111-112
Issue number	C
DOIs	https://doi.org/10.1016/0022-3115(82)90232-X
State	Published - 1982
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/0022-3115(82)90232-X

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Fonck, R. J., Bell, M., Bol, K., Brau, K., Budny, R., Cecchi, J. L., Cohen, S., Davis, S., Dylla, H. F., Goldston, R., Grek, B., Hawryluk, R. J., Hirschberg, J., Johnson, D., Hülse, R., Kaita, R., Kaye, S., Knize, R. J., Kugel, H., ... Yelle, R. (1982). Impurity levels and power loading in the pdx tokamak with high power neutral beam injection. Journal of Nuclear Materials, 111-112(C), 343-354. https://doi.org/10.1016/0022-3115(82)90232-X

Fonck, RJ, Bell, M, Bol, K, Brau, K, Budny, R, Cecchi, JL, Cohen, S, Davis, S, Dylla, HF, Goldston, R, Grek, B, Hawryluk, RJ, Hirschberg, J, Johnson, D, Hülse, R, Kaita, R, Kaye, S, Knize, RJ, Kugel, H, Manos, D, Mansfield, D, Mcguire, K, Mueller, D, Oasa, K, Okabayashi, M, Owens, DK, Ramette, J, Reeves, R, Reusch, M, Schmidt, G, sesnic, S, Suckewer, S, Takahashi, H, Tenney, F, Thomas, P, Ulrickson, M & Yelle, R 1982, 'Impurity levels and power loading in the pdx tokamak with high power neutral beam injection', Journal of Nuclear Materials, vol. 111-112, no. C, pp. 343-354. https://doi.org/10.1016/0022-3115(82)90232-X

@article{5f054a6e8c184a219f2dcbb8abd37ed0,

title = "Impurity levels and power loading in the pdx tokamak with high power neutral beam injection",

abstract = "The PDX tokamak provides an experimental facility for the direct comparison of various impurity control techniques under reactor-like conditions. Four neutral beam lines inject > 6 MW for 300 ms. Carbon rail limiter discharges have been used to test the effectiveness of perpendicular injection, but non-disruptive full power operation for > 100 ms is difficult without extensive conditioning. Initial tests of a toroidal bumper limiter indicate reduced power loading and roughly similar impurity levels compared to the carbon rail limiter discharges. Poloidal divertor discharges with up to 5 MW of injected power are cleaner than similar circular discharges, and the power is deposited in a remote divertor chamber. High density divertor operation indicates a reduction of impurity flow velocity in the divertor and enhanced recycling in the divertor region during neutral injection.",

author = "Fonck, {R. J.} and M. Bell and K. Bol and K. Brau and R. Budny and Cecchi, {J. L.} and S. Cohen and S. Davis and Dylla, {H. F.} and R. Goldston and B. Grek and Hawryluk, {R. J.} and J. Hirschberg and D. Johnson and R. H{\"u}lse and R. Kaita and S. Kaye and Knize, {R. J.} and H. Kugel and D. Manos and D. Mansfield and K. Mcguire and D. Mueller and K. Oasa and M. Okabayashi and Owens, {D. K.} and J. Ramette and R. Reeves and M. Reusch and G. Schmidt and S. sesnic and S. Suckewer and H. Takahashi and F. Tenney and P. Thomas and M. Ulrickson and R. Yelle",

note = "Funding Information: This work was supported by the U.S. Department of Energy Contract No. DE-AC02-76-CHO-3073. The authors thank the PDX technical crew and the entire PPPL support staff for assistance and support in these experiments.",

year = "1982",

doi = "10.1016/0022-3115(82)90232-X",

language = "English (US)",

volume = "111-112",

pages = "343--354",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "C",

}

TY - JOUR

T1 - Impurity levels and power loading in the pdx tokamak with high power neutral beam injection

AU - Fonck, R. J.

AU - Bell, M.

AU - Bol, K.

AU - Brau, K.

AU - Budny, R.

AU - Cecchi, J. L.

AU - Cohen, S.

AU - Davis, S.

AU - Dylla, H. F.

AU - Goldston, R.

AU - Grek, B.

AU - Hawryluk, R. J.

AU - Hirschberg, J.

AU - Johnson, D.

AU - Hülse, R.

AU - Kaita, R.

AU - Kaye, S.

AU - Knize, R. J.

AU - Kugel, H.

AU - Manos, D.

AU - Mansfield, D.

AU - Mcguire, K.

AU - Mueller, D.

AU - Oasa, K.

AU - Okabayashi, M.

AU - Owens, D. K.

AU - Ramette, J.

AU - Reeves, R.

AU - Reusch, M.

AU - Schmidt, G.

AU - sesnic, S.

AU - Suckewer, S.

AU - Takahashi, H.

AU - Tenney, F.

AU - Thomas, P.

AU - Ulrickson, M.

AU - Yelle, R.

N1 - Funding Information: This work was supported by the U.S. Department of Energy Contract No. DE-AC02-76-CHO-3073. The authors thank the PDX technical crew and the entire PPPL support staff for assistance and support in these experiments.

PY - 1982

Y1 - 1982

N2 - The PDX tokamak provides an experimental facility for the direct comparison of various impurity control techniques under reactor-like conditions. Four neutral beam lines inject > 6 MW for 300 ms. Carbon rail limiter discharges have been used to test the effectiveness of perpendicular injection, but non-disruptive full power operation for > 100 ms is difficult without extensive conditioning. Initial tests of a toroidal bumper limiter indicate reduced power loading and roughly similar impurity levels compared to the carbon rail limiter discharges. Poloidal divertor discharges with up to 5 MW of injected power are cleaner than similar circular discharges, and the power is deposited in a remote divertor chamber. High density divertor operation indicates a reduction of impurity flow velocity in the divertor and enhanced recycling in the divertor region during neutral injection.

AB - The PDX tokamak provides an experimental facility for the direct comparison of various impurity control techniques under reactor-like conditions. Four neutral beam lines inject > 6 MW for 300 ms. Carbon rail limiter discharges have been used to test the effectiveness of perpendicular injection, but non-disruptive full power operation for > 100 ms is difficult without extensive conditioning. Initial tests of a toroidal bumper limiter indicate reduced power loading and roughly similar impurity levels compared to the carbon rail limiter discharges. Poloidal divertor discharges with up to 5 MW of injected power are cleaner than similar circular discharges, and the power is deposited in a remote divertor chamber. High density divertor operation indicates a reduction of impurity flow velocity in the divertor and enhanced recycling in the divertor region during neutral injection.

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EP - 354

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - C

ER -

Impurity levels and power loading in the pdx tokamak with high power neutral beam injection

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