Video analysis of dust events in full-tungsten ASDEX Upgrade

被引：19

作者：

Brochard, F. ^{[1
]}

Shalpegin, A. ^{[1
,2
]}

Bardin, S. ^{[3
]}

Lunt, T. ^{[4
]}

Rohde, V. ^{[4
]}

Brianon, J. L. ^{[1
]}

Pautasso, G. ^{[4
]}

Vorpahl, C. ^{[5
]}

Neu, R. ^{[4
,6
]}

机构：

[1] Univ Lorraine, UMR CNRS 7198, Inst Jean Lamour, Vandoeuvre Les Nancy, France

[2] Univ Stuttgart, IGVP, Pfaffenwaldring 31, D-70569 Stuttgart, Germany

[3] Dutch Inst Fundamental Energy Res, FOM Inst DIFFER, Edisonbaan 14, NL-3439 MN Nieuwegein, Netherlands

[4] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany

[5] ITER Org, F-13067 St Paul Les Durance, France

[6] Tech Univ Munich, Boltzmannstr 15, D-85748 Garching, Germany

来源：

NUCLEAR FUSION | 2017年 / 57卷 / 03期

关键词：

thermonuclear fusion; plasma wall interactions; dust; tungsten tokamaks; fast imaging;

D O I：

10.1088/1741-4326/aa4e56

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：

Fast video data recorded during seven consecutive operation campaigns (2008-2012) in full-tungsten ASDEX Upgrade have been analyzed with an algorithm developed to automatically detect and track dust particles. A total of 2425 discharges have been analyzed, corresponding to 12 204 s of plasma operation. The analysis aimed at precisely identifying and sorting the discharge conditions responsible of the dust generation or remobilization. Dust rates are found to be significantly lower than in tokamaks with carbon PFCs. Significant dust events occur mostly during off-normal plasma phases such as disruptions and particularly those preceded by vertical displacement events (VDEs). Dust rates are also increased but to a lower extent during type-I ELMy H-modes. The influences of disruption energy, heating scenario, vessel venting and vessel vibrations are also presented.

引用

页数：13

共 36 条

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Balden M., 2014, NUCL FUSION, V54

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