Measurements of neutral gas fluxes under different plasma and divertor regimes in ASDEX Upgrade

被引：29

作者：

Scarabosio, A. ^{[1
]}

Haas, G. ^{[1
]}

Mueller, H. W. ^{[1
]}

Pugno, R. ^{[1
]}

Wischmeier, M. ^{[1
]}

机构：

[1] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷

关键词：

D O I：

10.1016/j.jnucmat.2009.01.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on neutral flux measurements in the full tungsten ASDEX Upgrade from the recently upgraded pressure gauge system in a wide range of plasma parameters and divertor conditions in L-mode plasmas. We compare these measurements with the ion and neutral fluxes in similar older discharges in presence of carbon target plates. We then show the qualitative relationship between the divertor poloidal distribution of the neutral flux density and the inner and outer divertor plasma regimes. During plasma density rise, when the plasma at one particular target detaches, the local flux increases abruptly producing a strong in-out asymmetry in the neutral flux distribution in the divertor. The neutral flux at the high field side increase linearly with the plasma density whereas at the low field side mid-plane it remains negligible in all the cases considered here. Finally, we compare detailed ion and neutral flux density profiles along the outer target from Langmuir probes, D(alpha) radiation and particle flux measurements obtained during vertical strike point sweeps. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：494 / 497

页数：4

共 7 条

[1] SOLPS modelling of ASDEX upgrade H-mode plasma [J].

Chankin, A. V. ;

Coster, D. P. ;

Dux, R. ;

Fuchs, Ch ;

Haas, G. ;

Herrmann, A. ;

D Horton, L. ;

Kallenbach, A. ;

Kaufmann, M. ;

Konz, Ch ;

Lackner, K. ;

Maggi, C. ;

Mueller, H. W. ;

Neuhauser, J. ;

Pugno, R. ;

Reich, M. ;

Schneider, W. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2006, 48 (06) :839-868

[2] In vessel pressure measurement in nuclear fusion experiments with ASDEX gauges [J].

Haas, G ;

Bosch, HS .

VACUUM, 1998, 51 (01) :39-46

[3]

KALLENBACH A, 2003, NUCL FUS, V43

[4]

MCCRACKEN GM, 1998, NUCL FUS, V38

[5] Plasma wall interaction and its implication in an all tungsten divertor tokamak [J].

Neu, R. ;

Balden, M. ;

Bobkov, V. ;

Dux, R. ;

Gruber, O. ;

Herrmann, A. ;

Kallenbach, A. ;

Kaufmann, M. ;

Maggi, C. F. ;

Maier, H. ;

Mueller, H. W. ;

Puetterich, T. ;

Pugno, R. ;

Rohde, V. ;

Sips, A. C. C. ;

Stober, J. ;

Suttrop, W. ;

Angioni, C. ;

Atanasiu, C. V. ;

Becker, W. ;

Behler, K. ;

Behringer, K. ;

Bergmann, A. ;

Bertoncelli, T. ;

Bilato, R. ;

Bottino, A. ;

Brambilla, M. ;

Braun, F. ;

Buhler, A. ;

Chankin, A. ;

Conway, G. ;

Coster, D. P. ;

de Marne, P. ;

Dietrich, S. ;

Dimova, K. ;

Drube, R. ;

Eich, T. ;

Engelhardt, K. ;

Fahrbach, H-U ;

Fantz, U. ;

Fattorini, L. ;

Fink, J. ;

Fischer, R. ;

Flaws, A. ;

Franzen, P. ;

Fuchs, J. C. ;

Gal, K. ;

Garcia-Munoz, M. ;

Gemisic-Adamov, M. ;

Giannone, L. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2007, 49 (12B) :B59-B70

[6]

Stangeby P., 2000, PLASMA PHYS SERIES, P180

[7] Simulating the role of intrinsic carbon impurities in the divertor detachment of ASDEX Upgrade [J].

Wischmeier, M. ;

Bonnin, X. ;

Coster, D. P. ;

Chankin, A. V. ;

Kallenbach, A. ;

Mueller, H. W. .

CONTRIBUTIONS TO PLASMA PHYSICS, 2008, 48 (1-3) :249-254

← 1 →