Dependence of edge stability on plasma shape and local pressure gradients in the DIII-D and JT-60U tokamaks

被引：73

作者：

Lao, LL ^{[1
]}

Kamada, Y

Oikawa, T

Baylor, LR

Burrell, KH

Chan, VS

Chance, MS

Chu, MS

Ferron, JR

Fukuda, T

Hatae, T

Isayama, A

Jackson, GJ

Leonard, AW

Makowski, MA

Manickam, J

Murakami, M

Okabayashi, M

Osborne, TH

Snyder, PB

Strait, EJ

Takeji, S

Takizuka, T

Taylor, TS

Turnbull, AD

Tsuchiya, K

Wade, MR

机构：

[1] Gen Atom Co, San Diego, CA 92138 USA

[2] Japan Atom Energy Agcy, Naka, Ibaraki, Japan

[3] Oak Ridge Natl Lab, Oak Ridge, TN USA

[4] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[5] Lawrence Livermore Natl Lab, Livermore, CA USA

来源：

NUCLEAR FUSION | 2001年 / 41卷 / 03期

关键词：

D O I：

10.1088/0029-5515/41/3/306

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 dependence of edge stability on plasma shape and local pressure gradients P' in the DIII-D and JT-60U tokamaks is studied. The stronger plasma shaping in DIII-D allows the edge region of DIII-D discharges with type I (giant) ELMs to have access to the second region of stability for ideal ballooning modes and a larger edge pedestal pressure gradient P' than JT-60U type I ELM discharges. These JT-60U discharges are near the ballooning mode first regime stability limit. The DIII-D results support an ideal stability based working model of type I ELMs as low to intermediate toroidal mode number, n, MHD modes. The results from a stability analysis of JT-60U type I ELM discharges indicate that the predictions of this model are also consistent with JT-60U edge stability observations.

引用

页码：295 / 300

页数：6

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