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 |
| 巻 | 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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ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
これを引用
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
}
TY - JOUR
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.
UR - http://www.scopus.com/inward/record.url?scp=0020753248&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0020753248&partnerID=8YFLogxK
U2 - 10.1016/0022-3115(84)90111-9
DO - 10.1016/0022-3115(84)90111-9
M3 - Article
AN - SCOPUS:0020753248
VL - 121
SP - 115
EP - 125
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - C
ER -