EFFECTS OF AUXILIARY HEATING ON DC ELECTRIC-FIELDS IN THE TEXTOR BOUNDARY

被引：15

作者：

MOYER, RA

VANNIEUWENHOVE, R

VANOOST, G

BORA, D

CONN, RW

CONRADS, H

IVANOV, RS

LAUX, M

RUSBULDT, D

SCHORN, R

TELESCA, G

VANDENPLAS, P

机构：

[1] ECOLE ROYALE MIL KONINKLIJKE MIL SCH,ASSOC EURATOM ETAT BELGE,PHYS PLASMAS LAB,B-1040 BRUSSELS,BELGIUM

[2] FORSCHUNGSZENTRUM JULICH,INST PLASMAPHYS,ASSOC EURATOM KFA,JULICH,GERMANY

[3] ACAD SCI GDR,ZENT INST ELEKTRONENPHYS,O-1086 BERLIN,GERMANY

[4] UNIV CALIF LOS ANGELES,DEPT MECH AEROSP & NUCL ENGN,LOS ANGELES,CA 90024

[5] MOSCOW HIGH TEMP PHYS INST,MOSCOW,USSR

来源：

JOURNAL OF NUCLEAR MATERIALS | 1990年 / 176卷

关键词：

D O I：

10.1016/0022-3115(90)90062-R

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The generation of d.c. electric fields in the TEXTOR edge (inside the last closed flux surface) and scrape-off layer (SOL) during auxillary heating has been studied using electric probes and spectroscopy. Peak radial and poloidal electric fields in the edge during neutral injection are 5 kV/m and 3 kV/m respectively while little effect is seen in the SOL. ICRH alters the radial electric field in the edge, and generates large (8 kV/m) fields in the SOL. These modifications depend sensitively on the limiter-antenna configuration. Large poloidal electric field of 2 kV/m are also generated in the SOL, but nearly vanish in the edge. Spectroscopic measurements of changes in poloidal rotation in the edge are in agreement with the probe measurements in neutral beam heated discharges. Profile modifications due to the electric fields are observed. The radial particle velocities corresponding to the measured poloidal electric fields exceed by many times the diffusive velocity, particularly during ICRH, suggesting that convective flows may be important.

引用

页码：293 / 300

页数：8

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