Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak

S. M. Kaye, M. G. Bell, K. Bol, D. Boyd, K. Brau, D. Buchenauer, R. Budny, A. Cavallo, P. Couture, T. Crowley, D. S. Darrow, H. Eubank, R. J. Fonck, R. Goldston, B. Grek, K. P. Jaehnig, D. Johnson, R. Kaita, H. Kugel, B. LeblancJ. Manickam, D. Manos, D. Mansfield, E. Mazzucato, R. McCann, D. McCune, K. McGuire, D. Mueller, A. Murdock, M. Okabayashi, Kunihiko Okano, D. K. Owens, D. E. Post, M. Reusch, G. L. Schmidt, S. Sesnic, R. Slusher, S. Suckewer, C. Surko, H. Takahashi, F. Tenney, H. Towner, J. Valley

研究成果: Article

143 引用 (Scopus)

抄録

The PDX divertor configuration has recently been converted from an open to a closed geometry to inhibit the return of neutral gas from the divertor region to the main chamber. Since then, operation in a regime with high energy confinement in neutral beam heated discharges (ASDEX H-mode) has been routine over a wide range of operating conditions. These H-mode discharges are characterized by a sudden drop in divertor density and Hα emission and a spontaneous rise in main chamber plasma density during neutral beam injection. The confinement time is found to scale nearly linearly with plasma current, but can be degraded due either to the presence of edge instabilities or heavy gas puffing. Detailed Thomson scattering temperature profiles show high values of Tc near the plasma edge (∼ 450 eV) with sharp radial gradients (∼ 400 eV/cm) near the separatrix. Density profiles are broad and also exhibit steep gradients close to the separatrix.

元の言語English
ページ(範囲)115-125
ページ数11
ジャーナルJournal of Nuclear Materials
121
発行部数C
DOI
出版物ステータスPublished - 1984 5 1
外部発表Yes

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neutral beams
Gases
Plasmas
Plasma confinement
Plasma density
chambers
gradients
beam injection
Thomson scattering
plasma currents
neutral gases
Scattering
temperature profiles
plasma density
Geometry
profiles
geometry
configurations
gases
Temperature

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

これを引用

Kaye, S. M., Bell, M. G., Bol, K., Boyd, D., Brau, K., Buchenauer, D., ... Valley, J. (1984). Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak. Journal of Nuclear Materials, 121(C), 115-125. https://doi.org/10.1016/0022-3115(84)90111-9

Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak. / Kaye, S. M.; Bell, M. G.; Bol, K.; Boyd, D.; Brau, K.; Buchenauer, D.; Budny, R.; Cavallo, A.; Couture, P.; Crowley, T.; Darrow, D. S.; Eubank, H.; Fonck, R. J.; Goldston, R.; Grek, B.; Jaehnig, K. P.; Johnson, D.; Kaita, R.; Kugel, H.; Leblanc, B.; Manickam, J.; Manos, D.; Mansfield, D.; Mazzucato, E.; McCann, R.; McCune, D.; McGuire, K.; Mueller, D.; Murdock, A.; Okabayashi, M.; Okano, Kunihiko; Owens, D. K.; Post, D. E.; Reusch, M.; Schmidt, G. L.; Sesnic, S.; Slusher, R.; Suckewer, S.; Surko, C.; Takahashi, H.; Tenney, F.; Towner, H.; Valley, J.

:: Journal of Nuclear Materials, 巻 121, 番号 C, 01.05.1984, p. 115-125.

研究成果: Article

Kaye, SM, Bell, MG, Bol, K, Boyd, D, Brau, K, Buchenauer, D, Budny, R, Cavallo, A, Couture, P, Crowley, T, Darrow, DS, Eubank, H, Fonck, RJ, Goldston, R, Grek, B, Jaehnig, KP, Johnson, D, Kaita, R, Kugel, H, Leblanc, B, Manickam, J, Manos, D, Mansfield, D, Mazzucato, E, McCann, R, McCune, D, McGuire, K, Mueller, D, Murdock, A, Okabayashi, M, Okano, K, Owens, DK, Post, DE, Reusch, M, Schmidt, GL, Sesnic, S, Slusher, R, Suckewer, S, Surko, C, Takahashi, H, Tenney, F, Towner, H & Valley, J 1984, 'Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak', Journal of Nuclear Materials, 巻. 121, 番号 C, pp. 115-125. https://doi.org/10.1016/0022-3115(84)90111-9
Kaye, S. M. ; Bell, M. G. ; Bol, K. ; Boyd, D. ; Brau, K. ; Buchenauer, D. ; Budny, R. ; Cavallo, A. ; Couture, P. ; Crowley, T. ; Darrow, D. S. ; Eubank, H. ; Fonck, R. J. ; Goldston, R. ; Grek, B. ; Jaehnig, K. P. ; Johnson, D. ; Kaita, R. ; Kugel, H. ; Leblanc, B. ; Manickam, J. ; Manos, D. ; Mansfield, D. ; Mazzucato, E. ; McCann, R. ; McCune, D. ; McGuire, K. ; Mueller, D. ; Murdock, A. ; Okabayashi, M. ; Okano, Kunihiko ; Owens, D. K. ; Post, D. E. ; Reusch, M. ; Schmidt, G. L. ; Sesnic, S. ; Slusher, R. ; Suckewer, S. ; Surko, C. ; Takahashi, H. ; Tenney, F. ; Towner, H. ; Valley, J. / Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak. :: Journal of Nuclear Materials. 1984 ; 巻 121, 番号 C. pp. 115-125.
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abstract = "The PDX divertor configuration has recently been converted from an open to a closed geometry to inhibit the return of neutral gas from the divertor region to the main chamber. Since then, operation in a regime with high energy confinement in neutral beam heated discharges (ASDEX H-mode) has been routine over a wide range of operating conditions. These H-mode discharges are characterized by a sudden drop in divertor density and Hα emission and a spontaneous rise in main chamber plasma density during neutral beam injection. The confinement time is found to scale nearly linearly with plasma current, but can be degraded due either to the presence of edge instabilities or heavy gas puffing. Detailed Thomson scattering temperature profiles show high values of Tc near the plasma edge (∼ 450 eV) with sharp radial gradients (∼ 400 eV/cm) near the separatrix. Density profiles are broad and also exhibit steep gradients close to the separatrix.",
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T1 - Attainment of high confinement in neutral beam heated divertor discharges in the PDX tokamak

AU - Kaye, S. M.

AU - Bell, M. G.

AU - Bol, K.

AU - Boyd, D.

AU - Brau, K.

AU - Buchenauer, D.

AU - Budny, R.

AU - Cavallo, A.

AU - Couture, P.

AU - Crowley, T.

AU - Darrow, D. S.

AU - Eubank, H.

AU - Fonck, R. J.

AU - Goldston, R.

AU - Grek, B.

AU - Jaehnig, K. P.

AU - Johnson, D.

AU - Kaita, R.

AU - Kugel, H.

AU - Leblanc, B.

AU - Manickam, J.

AU - Manos, D.

AU - Mansfield, D.

AU - Mazzucato, E.

AU - McCann, R.

AU - McCune, D.

AU - McGuire, K.

AU - Mueller, D.

AU - Murdock, A.

AU - Okabayashi, M.

AU - Okano, Kunihiko

AU - Owens, D. K.

AU - Post, D. E.

AU - Reusch, M.

AU - Schmidt, G. L.

AU - Sesnic, S.

AU - Slusher, R.

AU - Suckewer, S.

AU - Surko, C.

AU - Takahashi, H.

AU - Tenney, F.

AU - Towner, H.

AU - Valley, J.

PY - 1984/5/1

Y1 - 1984/5/1

N2 - The PDX divertor configuration has recently been converted from an open to a closed geometry to inhibit the return of neutral gas from the divertor region to the main chamber. Since then, operation in a regime with high energy confinement in neutral beam heated discharges (ASDEX H-mode) has been routine over a wide range of operating conditions. These H-mode discharges are characterized by a sudden drop in divertor density and Hα emission and a spontaneous rise in main chamber plasma density during neutral beam injection. The confinement time is found to scale nearly linearly with plasma current, but can be degraded due either to the presence of edge instabilities or heavy gas puffing. Detailed Thomson scattering temperature profiles show high values of Tc near the plasma edge (∼ 450 eV) with sharp radial gradients (∼ 400 eV/cm) near the separatrix. Density profiles are broad and also exhibit steep gradients close to the separatrix.

AB - The PDX divertor configuration has recently been converted from an open to a closed geometry to inhibit the return of neutral gas from the divertor region to the main chamber. Since then, operation in a regime with high energy confinement in neutral beam heated discharges (ASDEX H-mode) has been routine over a wide range of operating conditions. These H-mode discharges are characterized by a sudden drop in divertor density and Hα emission and a spontaneous rise in main chamber plasma density during neutral beam injection. The confinement time is found to scale nearly linearly with plasma current, but can be degraded due either to the presence of edge instabilities or heavy gas puffing. Detailed Thomson scattering temperature profiles show high values of Tc near the plasma edge (∼ 450 eV) with sharp radial gradients (∼ 400 eV/cm) near the separatrix. Density profiles are broad and also exhibit steep gradients close to the separatrix.

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U2 - 10.1016/0022-3115(84)90111-9

DO - 10.1016/0022-3115(84)90111-9

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - C

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