The formation and evolution of negative central magnetic shear current profiles on DIII-D

被引：37

作者：

Rice, BW

Taylor, TS

Burrell, KH

Casper, TA

Forest, CB

Ikezi, H

Lao, LL

Lazarus, EA

Mauel, ME

Stallard, BW

Strait, EJ

机构：

[1] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA

[2] OAK RIDGE NATL LAB,OAK RIDGE,TN

[3] COLUMBIA UNIV,NEW YORK,NY

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 1996年 / 38卷 / 06期

关键词：

D O I：

10.1088/0741-3335/38/6/008

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：

Using the combination of early neutral beam injection, ramping of the plasma current, low electron density and controlled L-H transitions, robust discharges with negative central magnetic shear are reproducibly obtained on the DIII-D tokamak. The effects of these factors on the formation and evolution of the q profile during the initial phase of these discharges are documented. Details of the evolution of the inverted q profile are obtained from measurements of the internal field pitch using a 16-channel motional Stark effect (MSE) system. Time-dependent MSE data are used to directly construct the profile of the toroidal electric field and allow a straightforward calculation of the non-inductive current density profile.

引用

页码：869 / 881

页数：13

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