Effect of limiter biasing on runaway electrons in tokamaks

被引：24

作者：

Ghanbari, M. R. ^{[1
]}

Ghoranneviss, M. ^{[1
]}

Elahi, A. Salar ^{[1
]}

Tajdidzadeh, M. ^{[1
]}

Mohamadi, S. ^{[1
]}

机构：

[1] Islamic Azad Univ, Sci & Res Branch, Plasma Phys Res Ctr, Tehran, Iran

来源：

PHYSICA SCRIPTA | 2011年 / 83卷 / 05期

基金：

美国国家科学基金会;

关键词：

MAJOR DISRUPTIONS; VELOCITY SHEAR; GENERATION; CONFINEMENT; TURBULENCE; REDUCTION; TRANSPORT; TEXTOR; PLASMA;

D O I：

10.1088/0031-8949/83/05/055501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Tokamak limiter biasing is one of the methods for controlling the radial electric field and can induce a transition to an improved confinement state. Moreover, the mean energy of runaway electrons and therefore emitted hard x-rays depends on fluctuations of plasma current and loop voltage, which can be controlled using limiter biasing. In this paper, we studied the effects of a biased limiter on loop voltage and hard x-rays. Hard x-ray emissions are produced by the collision of runaway electrons with limiters. Experiments were done by discharges in the range of a positive 180-380V biased limiter.

引用

页数：4

共 14 条

[1] Enhanced particle confinement and turbulence reduction due to E x B shear in the TEXTOR tokamak [J].

Boedo, J ;

Gray, D ;

Jachmich, S ;

Conn, R ;

Terry, GP ;

Tynan, G ;

Van Oost, G ;

Weynants, RR .

NUCLEAR FUSION, 2000, 40 (07) :1397-1410

[2] Effects of ExB velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices [J].

Burrell, KH .

PHYSICS OF PLASMAS, 1997, 4 (05) :1499-1518

[3]

DREICER H, 1959, PLASMA PHYS, V115, P2

[4] Behavior of hard X-ray emission in discharges with current disruptions in the DAMAVAND and TVD tokamaks [J].

Farshi, E ;

Amrollahy, R ;

Bortnikov, AV ;

Brevnov, NN ;

Gott, YV ;

Shurygin, VA .

PLASMA PHYSICS REPORTS, 2001, 27 (07) :545-548

[5] The first results of electrode biasing experiments in the IR-T1 tokamak [J].

Ghoranneviss, M. ;

Elahi, A. Salar ;

Mohammadi, S. ;

Arvin, R. .

PHYSICA SCRIPTA, 2010, 82 (03)

[6] EXPERIMENTAL INVESTIGATION OF RUNAWAY ELECTRON GENERATION IN TEXTOR [J].

JASPERS, R ;

FINKEN, KH ;

MANK, G ;

HOENEN, F ;

BOEDO, JA ;

CARDOZO, NJL ;

SCHULLER, FC .

NUCLEAR FUSION, 1993, 33 (12) :1775-1785

[7] Spatially and temporally resolved measurements of runaway electrons in the TEXTOR tokamak [J].

Kudyakov, T. ;

Finken, K. H. ;

Jakubowski, M. W. ;

Lehnen, M. ;

Xu, Y. ;

Schweer, B. ;

Toncian, T. ;

Van Wassenhove, G. ;

Willi, O. .

NUCLEAR FUSION, 2008, 48 (12)

[8] Study of runaway electron generation during major disruptions in JET [J].

Plyusnin, VV ;

Riccardo, V ;

Jaspers, R ;

Alper, B ;

Kiptily, VG ;

Mlynar, J ;

Popovichev, S ;

de la Luna, E ;

Andersson, F .

NUCLEAR FUSION, 2006, 46 (02) :277-284

[9]

PUTVINSKI S, 1997, PLASMA PHYS CONTROLL, V39, P157

[10] Generation of suprathermal electrons during magnetic reconnection at the sawtooth crash and disruption instability in the T-10 tokamak [J].

Savrukhin, PV .

PHYSICAL REVIEW LETTERS, 2001, 86 (14) :3036-3039

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