TY - JOUR
T1 - Comparison of O-ICR wall conditionings for limiter configuration in HT-7 and divertor one in EAST
AU - Hu, J. S.
AU - Li, J. G.
AU - Zhao, Y. P.
PY - 2009/6/15
Y1 - 2009/6/15
N2 - Ion cyclotron resonance discharge-associated oxidation (He/O-ICR) wall conditioning was successfully carried out on full metallic material walls for a divertor configuration in EAST. Within a range of He/O-ICR parameters (5-20 kW, 1.2-7 × 10-2 Pa) in EAST, the highest removal rates (7.8 × 1022 H-atoms/h, 4.2 × 1022 C-atoms/h) were obtained with 20 kW and 7 × 10-2 Pa He/O-ICR. These rates are about 10 times higher than those in HT-7. Oxygen retention rates were lower than HT-7 by a factor of >10. Results of O-ICR cleanings in both EAST and HT-7 showed that power density, working pressure, plasma-facing area and materials, and pumping speed are the main factors influencing the co-deposit removal rates during O-ICR wall conditioning.
AB - Ion cyclotron resonance discharge-associated oxidation (He/O-ICR) wall conditioning was successfully carried out on full metallic material walls for a divertor configuration in EAST. Within a range of He/O-ICR parameters (5-20 kW, 1.2-7 × 10-2 Pa) in EAST, the highest removal rates (7.8 × 1022 H-atoms/h, 4.2 × 1022 C-atoms/h) were obtained with 20 kW and 7 × 10-2 Pa He/O-ICR. These rates are about 10 times higher than those in HT-7. Oxygen retention rates were lower than HT-7 by a factor of >10. Results of O-ICR cleanings in both EAST and HT-7 showed that power density, working pressure, plasma-facing area and materials, and pumping speed are the main factors influencing the co-deposit removal rates during O-ICR wall conditioning.
UR - https://www.scopus.com/pages/publications/67349257985
U2 - 10.1016/j.jnucmat.2009.01.238
DO - 10.1016/j.jnucmat.2009.01.238
M3 - 文章
AN - SCOPUS:67349257985
SN - 0022-3115
VL - 390-391
SP - 929
EP - 933
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -