Achieving high flux amplification in a gun-driven, flux-core spheromak

被引：10

作者：

Hooper, E. B. ^{[1
]}

Hill, D. N. ^{[1
]}

McLean, H. S. ^{[1
]}

Romero-Talamas, C. A. ^{[1
]}

Wood, R. D. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

NUCLEAR FUSION | 2007年 / 47卷 / 08期

关键词：

D O I：

10.1088/0029-5515/47/8/042

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：

A new means of operating flux-core spheromaks with possibly increased stability, confinement and pulse length is analysed by a resistive magnetohydrodynamic (MHD) model. High amplification of the bias poloidal flux, required to minimize ohmic losses, is achieved by reducing the bias rapidly in a plasma formed at a lower amplification. The plasma separatrix is predicted to expand and incorporate the removed bias flux maintaining the total poloidal flux within the spheromak's flux-conserving wall. MHD energy on open magnetic field lines is reduced, reducing magnetic fluctuation levels. A means of experimental verification is suggested that may point the way to fusion-relevant spheromaks.

引用

页码：1064 / 1070

页数：7

共 28 条

[1] AN INTELLIGENT SHELL FOR THE TOROIDAL PINCH [J].

BISHOP, CM .

PLASMA PHYSICS AND CONTROLLED FUSION, 1989, 31 (07) :1179-1189

[2] MAGNETIC HELICITY AND DYNAMOS [J].

BOOZER, AH .

PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1993, 5 (07) :2271-2277

[3] Stability studies and the origin of the n=1 mode in the SPHEX spheromak experiment [J].

Brennan, D ;

Browning, PK ;

Van der Linden, RAM ;

Hood, AW ;

Woodruff, S .

PHYSICS OF PLASMAS, 1999, 6 (11) :4248-4259

[4] Reversed field pinch operation with intelligent shell feedback control in EXTRAP T2R [J].

Brunsell, P. R. ;

Kuldkepp, M. ;

Menmuir, S. ;

Cecconello, M. ;

Hedqvist, A. ;

Yadikin, D. ;

Drake, J. R. ;

Rachlew, E. .

NUCLEAR FUSION, 2006, 46 (11) :904-913

[5] Simulation of spheromak evolution and energy confinement [J].

Cohen, BI ;

Hooper, EB ;

Cohen, RH ;

Hill, DN ;

McLean, HS ;

Wood, RD ;

Woodruff, S ;

Sovinec, CR ;

Cone, GA .

PHYSICS OF PLASMAS, 2005, 12 (05)

[6] Structure of the n=1 mode responsible for relaxation and current drive during sustainment of the SPHEX spheromak [J].

Duck, RC ;

Browning, PK ;

Cunningham, G ;

Gee, SJ ;

alKarkhy, A ;

Martin, R ;

Rusbridge, MG .

PLASMA PHYSICS AND CONTROLLED FUSION, 1997, 39 (05) :715-736

[7] STEADY-STATE SPHEROMAK REACTOR STUDIES [J].

HAGENSON, RL ;

KRAKOWSKI, RA .

FUSION TECHNOLOGY, 1985, 8 (01) :1606-1612

[8] Magnetic reconnection in the spheromak:: Physics and consequences [J].

Hooper, E. B. ;

Cohen, B. I. ;

Hill, D. N. ;

LoDestro, L. L. ;

McLean, H. S. ;

Romero-Talamas, C. A. ;

Wood, R. D. ;

Sovinec, C. R. .

JOURNAL OF FUSION ENERGY, 2007, 26 (1-2) :71-75

[9] Magnetic reconnection during flux conversion in a driven spheromak [J].

Hooper, EB ;

Kopriva, TA ;

Cohen, BI ;

Hill, DN ;

McLean, HS ;

Wood, RD ;

Woodruff, S ;

Sovinec, CR .

PHYSICS OF PLASMAS, 2005, 12 (09) :1-11

[10] MHD equilibria in a spheromak sustained by coaxial helicity injection [J].

Hooper, EB ;

Pearlstein, LD ;

Bulmer, RH .

NUCLEAR FUSION, 1999, 39 (07) :863-871

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