Non-axisymmetric equilibrium reconstruction of a current-carrying stellarator using external magnetic and soft x-ray inversion radius measurements

被引：8

作者：

Ma, X. ^{[1
]}

Maurer, D. A. ^{[1
]}

Knowlton, S. F. ^{[1
]}

ArchMiller, M. C. ^{[1
]}

Cianciosa, M. R. ^{[2
]}

Ennis, D. A. ^{[1
]}

Hanson, J. D. ^{[1
]}

Hartwell, G. J. ^{[1
]}

Hebert, J. D. ^{[1
]}

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

Pandya, M. D. ^{[1
]}

Roberds, N. A. ^{[1
]}

Traverso, P. J. ^{[1
]}

机构：

[1] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 12期

关键词：

PLASMA; DIAGNOSTICS; STABILITY; PROFILES;

D O I：

10.1063/1.4938031

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：

Non-axisymmetric free-boundary equilibrium reconstructions of stellarator plasmas are performed for discharges in which the magnetic configuration is strongly modified by ohmically driven plasma current. These studies were performed on the compact toroidal hybrid device using the V3FIT reconstruction code with a set of 50 magnetic diagnostics external to the plasma. With the assumption of closed magnetic flux surfaces, the reconstructions using external magnetic measurements allow accurate estimates of the net toroidal flux within the last closed flux surface, the edge safety factor, and the plasma shape of these highly non-axisymmetric plasmas. The inversion radius of standard saw-teeth is used to infer the current profile near the magnetic axis; with external magnetic diagnostics alone, the current density profile is imprecisely reconstructed. (C) 2015 AIP Publishing LLC.

引用

页数：9

共 24 条

[1] Equilibrium reconstruction in the Madison Symmetric Torus reversed field pinch
Anderson, JK
Forest, CB
Biewer, TM
Sarff, JS
Wright, JC
[J]. NUCLEAR FUSION, 2004, 44 (01) : 162 - 171
[2] Modeling of active control of external magnetohydrodynamic instabilities
Bialek, J
Boozer, AH
Mauel, ME
Navratil, GA
[J]. PHYSICS OF PLASMAS, 2001, 8 (05) : 2170 - 2180
[3] Accuracy of EFIT equilibrium reconstruction with internal diagnostic information at JET
Brix, M.
Hawkes, N. C.
Boboc, A.
Drozdov, V.
Sharapov, S. E.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2008, 79 (10)
[4] Magnetic Diagnostics for Equilibrium Reconstruction at W7-X
Geiger, J.
Endler, M.
Werner, A.
[J]. CONTRIBUTIONS TO PLASMA PHYSICS, 2010, 50 (08) : 736 - 740
[5] DISRUPTIVE MHD ACTIVITY DURING PLASMA CURRENT RISE IN ALCATOR A TOKAMAK
GRANETZ, RS
HUTCHINSON, IH
OVERSKEI, DO
[J]. NUCLEAR FUSION, 1979, 19 (12) : 1587 - 1595
[6] Non-axisymmetric equilibrium reconstruction for stellarators, reversed field pinches and tokamaks
Hanson, J. D.
Anderson, D. T.
Cianciosa, M.
Franz, P.
Harris, J. H.
Hartwell, G. H.
Hirshman, S. P.
Knowlton, S. F.
Lao, L. L.
Lazarus, E. A.
Marrelli, L.
Maurer, D. A.
Schmitt, J. C.
Sontag, A. C.
Stevenson, B. A.
Terranova, D.
[J]. NUCLEAR FUSION, 2013, 53 (08)
[7] Equilibrium and Stability of Current-Carrying Discharges in the Non-Axisymmetric CTH Experiment
Hanson, J. D.
Knowlton, S. F.
Stevenson, B. A.
Hartwell, G. J.
[J]. CONTRIBUTIONS TO PLASMA PHYSICS, 2010, 50 (08) : 724 - 730
[8] V3FIT: a code for three-dimensional equilibrium reconstruction
Hanson, James D.
Hirshman, Steven P.
Knowlton, Stephen F.
Lao, Lang L.
Lazarus, Edward A.
Shields, John M.
[J]. NUCLEAR FUSION, 2009, 49 (07)
[9] Design and initial operation of a two-color soft x-ray camera system on the Compact Toroidal Hybrid experiment
Herfindal, J. L.
Dawson, J. D.
Ennis, D. A.
Hartwell, G. J.
Loch, S. D.
Maurer, D. A.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2014, 85 (11)
[10] MOMCON - A SPECTRAL CODE FOR OBTAINING 3-DIMENSIONAL MAGNETOHYDRODYNAMIC EQUILIBRIA
HIRSHMAN, SP
LEE, DK
[J]. COMPUTER PHYSICS COMMUNICATIONS, 1986, 39 (02) : 161 - 172

← 1 2 3 →