2D turbulence imaging in DIII-D via beam emission spectroscopy

被引：21

作者：

Fenzi, C ^{[1
]}

Fonck, RJ ^{[1
]}

Jakubowski, M ^{[1
]}

Mc Kee, GR ^{[1
]}

机构：

[1] Univ Wisconsin, Madison, WI 53706 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 01期

关键词：

D O I：

10.1063/1.1321739

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Two-dimensional measurements of density fluctuations have been performed in DIII-D using the beam emission spectroscopy diagnostic. The 32 spatial channels are arranged to image a 5 x 6 cm(2) (radialxpoloidal) region in the plasma cross section, at a nominal 1 cm spatial resolution and separation. The typical decorrelation time, poloidal and radial correlation lengths, as well as a time-averaged flow field plot are obtained from spatial and temporal correlation analyses. A biorthogonal decomposition algorithm is applied to expand the data set into a set of modes that are orthogonal in time and in space, thus providing a simultaneous analysis of the space and time dependencies of fluctuation data. (C) 2001 American Institute of Physics.

引用

页码：988 / 991

页数：4

共 9 条

[1] AUBRY N, 1991, J STAT PHYS, V64, P693
[2] CHARACTERIZATION OF COHERENT STRUCTURES IN TOKAMAK EDGE TURBULENCE
BENKADDA, S
DEWIT, TD
VERGA, A
SEN, A
GARBET, X
[J]. PHYSICAL REVIEW LETTERS, 1994, 73 (25) : 3403 - 3406
[3] DEWIT TD, 1994, PHYS PLASMAS, V1, P3288, DOI 10.1063/1.870481
[4] ENHANCEMENT OF MULTICHANNEL DATA IN PLASMA PHYSICS BY BIORTHOGONAL DECOMPOSITION
DEWIT, TD
[J]. PLASMA PHYSICS AND CONTROLLED FUSION, 1995, 37 (02) : 117 - 135
[5] Measurements of nonlinear energy transfer in turbulence in the Tokamak Fusion Test Reactor
Kim, JS
Fonck, RJ
Durst, RD
Fernandez, E
Terry, PW
Paul, SF
Zarnstorff, MC
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (05) : 841 - 844
[6] Technique for the experimental estimation of nonlinear energy transfer in fully developed turbulence
Kim, JS
Durst, RD
Fonck, RJ
Fernandez, E
Ware, A
Terry, PW
[J]. PHYSICS OF PLASMAS, 1996, 3 (11) : 3998 - 4009
[7] The beam emission spectroscopy diagnostic on the DIII-D tokamak
McKee, G
Ashley, R
Durst, R
Fonck, R
Jakubowski, M
Tritz, K
Burrell, K
Greenfield, C
Robinson, J
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (01) : 913 - 916
[8] MULTICHANNEL FLUCTUATION DATA-ANALYSIS BY THE SINGULAR VALUE DECOMPOSITION METHOD - APPLICATION TO MHD MODES IN JET
NARDONE, C
[J]. PLASMA PHYSICS AND CONTROLLED FUSION, 1992, 34 (09) : 1447 - 1465
[9] STRUCTURE OF EDGE-PLASMA TURBULENCE IN THE CALTECH TOKAMAK
ZWEBEN, SJ
GOULD, RW
[J]. NUCLEAR FUSION, 1985, 25 (02) : 171 - 183

← 1 →