Study of the specific detachment characteristics of HL-2A
Numerical analysis of HL-2A single null and double null divertor discharges was done using the two-dimensional edge plasma simulation code SOLPS5.0. The detachment characteristic of HL-2A is determined by the specific divertor geometry of HL-2A. Its thin divertor throats are transparent for neutrals...
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| Veröffentlicht in: | Journal of nuclear materials 2007-06, Vol.363-365, p.407-411 |
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| container_title | Journal of nuclear materials |
| container_volume | 363-365 |
| creator | Pan, Y.D. Schneider, R. |
| description | Numerical analysis of HL-2A single null and double null divertor discharges was done using the two-dimensional edge plasma simulation code SOLPS5.0. The detachment characteristic of HL-2A is determined by the specific divertor geometry of HL-2A. Its thin divertor throats are transparent for neutrals, but still quite well baffled towards the main chamber due to the long baffle lengths. This results in momentum losses at low densities from the interaction of the streaming divertor plasma with this neutral cushion. Therefore, a strong deviation from the common 2-point scaling is observed if local parameters are used, similar to island divertor in stellarator. The thin divertor throats in HL-2A pose MHD shaping problems resulting in strongly enhanced main chamber losses, because a large amount of the power is lost at baffles and does not even get into the divertor. |
| doi_str_mv | 10.1016/j.jnucmat.2007.01.036 |
| format | Article |
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The detachment characteristic of HL-2A is determined by the specific divertor geometry of HL-2A. Its thin divertor throats are transparent for neutrals, but still quite well baffled towards the main chamber due to the long baffle lengths. This results in momentum losses at low densities from the interaction of the streaming divertor plasma with this neutral cushion. Therefore, a strong deviation from the common 2-point scaling is observed if local parameters are used, similar to island divertor in stellarator. 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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences B2/EIRENE Controled nuclear fusion plants Divertor geometry Divertor modeling Divertor plasma Energy Energy. Thermal use of fuels Exact sciences and technology Installations for energy generation and conversion: thermal and electrical energy |
| title | Study of the specific detachment characteristics of HL-2A |
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