Termination of plasma discharge by high-Z liquid impurity jet injection in a tokamak reactor

被引：1

作者：

Itoh, Y

Murakami, Y

Nishio, S

机构：

[1] Toshiba Co Ltd, Power & Ind Syst Res & Dev Ctr, Kawasaki Ku, Kawasaki, Kanagawa 2100862, Japan

[2] Japan Atom Energy Res Inst, Naka Fus Res Estab, Dept Fus Plasma Res, Naka, Ibaraki 3110193, Japan

来源：

FUSION SCIENCE AND TECHNOLOGY | 2001年 / 40卷 / 02期

关键词：

liquid jets; plasma terminations; runaway electrons;

D O I：

10.13182/FST01-A186

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A feasibility study is presented of fast tokamak plasma terminations by means of high-Z impurity liquid jet injections in order to reduce the technological requirements of such terminations. The calculation was carried out by combining models described for the jet ablation and the current termination and taking into account the ionization of the jet material exposed to generated runaway electrons. The liquid jet was assumed to fragment and thus to deposit more massive impurity ions in the plasma. Although argon or krypton jet injection generates the runaway electron current, it decays in several hundred milliseconds with ionization of the residual jet material. These high-Z impurity jet injections would also be applicable for terminating or reducing the runaway electron current tails generated by major plasma disruptions.

引用

页码：125 / 132

页数：8

共 11 条

[1] EMERGENCY DISCHARGE QUENCH OR RAMPDOWN BY A NOBLE-GAS PELLET [J].

KUTEEV, BV ;

SERGEEV, VY ;

SUDO, S .

NUCLEAR FUSION, 1995, 35 (10) :1167-1172

[2]

LOCHTEHOLTGREVE.W, 1968, PLASMA DIAGNOSTICS, P842

[3] High-velocity liquid jet injection into tokamak plasmas for disruption mitigation [J].

Parks, PB ;

Rosenbluth, MN ;

Putvinski, SV ;

Evans, TE .

FUSION TECHNOLOGY, 1999, 35 (03) :267-279

[4] PELLET ABLATION STUDIES ON TORE-SUPRA [J].

PEGOURIE, B ;

PICCHIOTTINO, JM ;

DRAWIN, HW ;

GERAUD, A ;

CHATELIER, M .

NUCLEAR FUSION, 1993, 33 (04) :591-600

[5]

Post D. E., 1977, Atomic Data and Nuclear Data Tables, V20, P397, DOI 10.1016/0092-640X(77)90026-2

[6]

PUTVINSKI P, 1997, PLASMA PHYS CONTR B, V39, P157

[7] Impurity fueling to terminate Tokamak discharges [J].

Putvinski, S ;

Fujisawa, N ;

Post, D ;

Putvinskaya, N ;

Rosenbluth, MN ;

Wesley, J .

JOURNAL OF NUCLEAR MATERIALS, 1997, 241 :316-321

[8] Theory for avalanche of runaway electrons in tokamaks [J].

Rosenbluth, MN ;

Putvinski, SV .

NUCLEAR FUSION, 1997, 37 (10) :1355-1362

[9] Liquid jets for fast plasma termination in tokamaks [J].

Rosenbluth, MN ;

Putvinskij, SV ;

Parks, PB .

NUCLEAR FUSION, 1997, 37 (07) :955-966

[10]

SIMADA M, 1982, NUCL FUSION, V22, P643

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