Quasistationary high confinement discharges with trans-greenwald density on TEXTOR-94

被引：22

作者：

Mank, G

Messiaen, AM

Ongena, J

Unterberg, B

Dumortier, P

Finken, KH

Jaspers, R

Koslowski, HR

Krämer-Flecken, A

Rapp, J

Samm, U

van Wassenhove, G

Weynants, RR

机构：

[1] Forschungszentrum Julich, EURATOM Assoc, Inst Plasma Phys, D-52425 Julich, Germany

[2] EURATOM, Ecole Royale Mil, Plasma Phys Lab, B-1000 Brussels, Belgium

[3] EURATOM, FOM, Inst Plasmafys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.85.2312

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Confinement quality as good as ELM-free H-mode at densities substantially above die Greenwald density limit((n) over bar(e,0)/n(GW) = 1.4) has been obtained in discharges with a radiative boundary under quasistationary conditions for 20 times the energy confinement time. This is achieved by optimizing the gas-fueling rate of RI-mode discharges which tailors their favorable energy confinement and lends to discharges with beta values just below the operational limit beta(n) = 2 of TEXTOR-94, thereby effectively avoiding confinement back transitions or disruptions. In addition, this high-density regime is favorable for helium removal and results in figures of merit tau(p,He)(*)/tau(E) approximate to 10-15, relevant for a future fusion power reactor.

引用

页码：2312 / 2315

页数：4

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