A METHOD TO MEASURE POLOIDAL FIELD-COIL IRREGULARITIES IN TOROIDAL PLASMA-DEVICES

被引：50

作者：

LAHAYE, RJ

SCOVILLE, JT

机构：

[1] General Atomics, San Diego

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1991年 / 62卷 / 09期

关键词：

D O I：

10.1063/1.1142330

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A ring of accurately placed and matched printed circuit coils is placed at the center of the DIII-D tokamak vacuum vessel, aligned magnetically with the toroidal field and used to measure the nonaxisymmetric magnetic field of each of the 18 poloidal field coils. [Toroidal and poloidal variations can be of mode n and m, respectively, with helical variations of form cos (n-phi - m-theta).] From the error fields, it is computed that the most irregular poloidal field coil is one of the outer vertical field coils having a shift of 1.9 +/- 0.2 cm (compared to a diameter of 482 cm), and having an ellipticity 1.0027. All the 18 poloidal field coils together make a resonant, helical, radial error field for m = 2, n = 1 of about 1.4 X 10(-4) of the toroidal field.

引用

页码：2146 / 2153

页数：8

共 12 条

[1]

BROWN DI, 7TH P S ENG PROBL FU, P1347

[2]

CHANG Z, 1990, NUCL FUSION, V30, P291

[3] MAGNETIC-FIELD ALIGNMENT STUDIES FOR THE URAGAN-3 TORSATRON [J].