Comparison of the scrape-off layer two-point model for deuterium and helium plasmas in JET ITER-like wall low-confinement plasma conditions

被引：0
|
作者：
Rees, David [1 ]
Sissonen, Joona [1 ]
Groth, Mathias [1 ]
Rikala, Vesa-Pekka [1 ]
Kumpulainen, Henri [1 ]
Thomas, Beth [2 ]
Brix, Mathias [2 ]
机构：
[1] Aalto Univ, Dept Appl Phys, Espoo, Finland
[2] UKAEA, Culham Sci Ctr, Abingdon, England
来源：
CONTRIBUTIONS TO PLASMA PHYSICS | 2024年 / 64卷 / 7-8期
关键词：
2PM; He-2PM; helium; JET; SOL;
D O I：
10.1002/ctpp.202300108
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The hydrogenic two-point model(H-2PM), an analytical model for the scrape-off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single-species helium (He) model, preserving the 2PM assumptions and analytical nature. Across a range of densities and heating powers, the predicted T-e is within 20 eVof upstream measurements by high-resolution Thomson scattering (HRTS) forlow-confinement He plasmas performed in JET ITER-like wall (JET-ILW). For high-recycling conditions, He-2PM predictions of n(e) were within 10% of the Li-beam diagnostic measurements, excluding the near-SOL, when assuming Z(eff)=1, suggesting the divertor SOL was not fully ionised in the JET-ILW Heplasmas.
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页数：11
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