TY - JOUR
T1 - Helium ash exhaust studies with core fueling by a helium beam
T2 - L-mode divertor discharges with neutral-beam heating in the JT-60 tokamak
AU - Nakamura, H.
AU - Hirayama, T.
AU - Koide, Y.
AU - Tobita, K.
AU - Tani, K.
AU - Fukuda, T.
AU - Kubo, H.
AU - Kuriyama, M.
AU - Kusama, Y.
AU - Sakasai, A.
AU - Sugie, T.
AU - Yoshida, H.
PY - 1991
Y1 - 1991
N2 - The first experiment simulating helium ash exhaust in a DT fusion reactor has been performed in the JT-60 tokamak with L-mode divertor discharges. He was injected with a 30-keV neutral beam to realize core fueling. Divertor neutral pressures of hydrogen and He increased in proportion to the cube of the electron density of the main plasma. The He enrichment factor was 0.5 at ne=6×1019 m-3 and increased in proportion to ne. In an L-mode plasma of a fusion reactor, thermalized ± particles (He ash) generated in the core plasma can be easily exhausted with a pumping speed of several tens m3/s.
AB - The first experiment simulating helium ash exhaust in a DT fusion reactor has been performed in the JT-60 tokamak with L-mode divertor discharges. He was injected with a 30-keV neutral beam to realize core fueling. Divertor neutral pressures of hydrogen and He increased in proportion to the cube of the electron density of the main plasma. The He enrichment factor was 0.5 at ne=6×1019 m-3 and increased in proportion to ne. In an L-mode plasma of a fusion reactor, thermalized ± particles (He ash) generated in the core plasma can be easily exhausted with a pumping speed of several tens m3/s.
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U2 - 10.1103/PhysRevLett.67.2658
DO - 10.1103/PhysRevLett.67.2658
M3 - Article
AN - SCOPUS:11744275646
SN - 0031-9007
VL - 67
SP - 2658
EP - 2661
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
ER -