A fast scanning Langmuir probe system for ASDEX-Upgrade divertor

被引：30

作者：

Tsois, N ^{[1
]}

Dorn, C

Kyriakakis, G

Markoulaki, M

Pflug, M

Schramm, G

Theodoropoulos, P

Xantopoulos, P

Weinlich, M

机构：

[1] NCSR Demokritos, Inst Nucl Technol Rad Prot, GR-15310 Athens, Greece

[2] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 1999年 / 266卷

关键词：

ASDEX-Upgrade; Langmuir probe; divertor plasma; plasma flow;

D O I：

10.1016/S0022-3115(98)00569-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A fast scanning Langmuir probe system (LPS) for ASDEX-Upgrade's divertor plasma investigations was designed, manufactured and operated. Profiles of ion saturation current density, J(sat) electron temperature, T-ed, electron density, N-ed, floating potential, V-fl, and Mach number have been recorded for ohmic (OH) and low/medium power neutral beam heated (NI) discharges. In these cases the probe can access both divertor legs, allowing comparison of plasma parameters in the two diverters and investigations of the private flu?; region. Strong divertor asymmetries, complex plasma flow patterns and changes in the power flow to the divertor targets, depending on ion gradB drift direction, density and divertor geometry, have been observed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：1230 / 1233

页数：4

共 17 条

[1] DIVERTOR PLASMA CHARACTERIZATION USING LANGMUIR PROBES IN DIII-D [J].

BUCHENAUER, D ;

HSU, WL ;

HILL, DN ;

MAHDAVI, MA .

JOURNAL OF NUCLEAR MATERIALS, 1990, 176 :528-532

[2] Classical drifts in the tokamak SOL and divertor: Models and experiment [J].

Chankin, AV .

JOURNAL OF NUCLEAR MATERIALS, 1997, 241 :199-213

[3]

CHODURA R, 1990, 17 EPS C CONTR FUS P

[4] AN ANALYTIC TREATMENT OF THE BOUNDED AND FREE PRESHEATHS WITH ARBITRARY VISCOSITY IN MAGNETIZED FLOWING PLASMAS [J].

CHUNG, KS .

PHYSICS OF PLASMAS, 1994, 1 (09) :2864-2871

[5]

*EURATOM, 5000CT91007 EURATOM

[6] First experimental determination of ion flow velocities and temperatures in the ASDEX Upgrade divertor [J].

Gafert, J ;

Behringer, K ;

Coster, D ;

Dorn, C ;

Hirsch, K ;

Niethammer, M ;

Schumacher, U .

PLASMA PHYSICS AND CONTROLLED FUSION, 1997, 39 (12) :1981-1995

[7]

GUENTHER K, 1995, 22 EPS C CONTR FUS P, pI433

[8] THE X-POINT SCRAPE-OFF PLASMA IN JET WITH L-MODES AND H-MODES [J].

HARBOUR, PJ ;

SUMMERS, DDR ;

CLEMENT, S ;

COAD, JP ;

DEKOCK, L ;

EHRENBERG, J ;

ERENTS, K ;

GOTTARDI, N ;

HUBBARD, A ;

KEILHACKER, M ;

MORGAN, PD ;

SNIPES, JA ;

STAMP, MF ;

TAGLE, JA ;

TANGA, A ;

BEHRISCH, R ;

WANG, WM .

JOURNAL OF NUCLEAR MATERIALS, 1989, 162 :236-244

[9] DETERMINATION OF THE ELECTRIC-FIELD NEAR A SEPARATRIX IN DIVERTED TOKAMAKS [J].

HINTON, FL ;

KIM, YB .

NUCLEAR FUSION, 1994, 34 (07) :899-912

[10] A FLUID THEORY OF ION COLLECTION BY PROBES IN STRONG MAGNETIC-FIELDS WITH PLASMA-FLOW [J].

HUTCHINSON, IH .

PHYSICS OF FLUIDS, 1987, 30 (12) :3777-3781

← 1 2 →