Download LSP User`s Manual and Reference

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LSP User’s Manual and Reference
(float)
(float)
(float)
(float)
(float)
R. E. Clark and T. P. Hughes
dx2 (radial grid size)
x1s (axial starting point)
x2s (radial starting point)
Bz[nx2][nx1] (axial field values)
Br[nx2][nx1] (radial field values)
where the field values are in normalized code units (value in gauss divided by 1704.5), and
spatial dimensions are in cm. This file may be either formatted ASCII or binary type. If
it is the latter, it must be indicated where the file is specified on input (see Section 6.15
[External Fields Input], page 100).
7.5 ATHETA Magnetic Field File
The ASCII file format produced by the ATHETA code (SNL) can be generated using
the following FORTRAN code:
Open (Unit=25,File=’ATHETA.DAT’,Form=’FORMATTED’,Status=’UNKNOWN’)
Write (25,5) NK+1, NL+1
5 Format (2I5)
Write (25,10) (RPOS(K),K = 1,NK)
Write (25,10) (ZPOS(L),L = 1,NL)
Write (25,10) ((BRFLD(L,K),K = 1,NK),L = 1,NL)
Write (25,10) ((BZFLD(L,K),K = 1,NK),L = 1,NL)
10 Format(6(1PE12.4))
where NK, NL are the number of grid-points in the radial and axial directions, RPOS, ZPOS
are the radial and axial grid coordinates in meters and BRFLD, BZFLD are the radial and
axial components of the magnetic field in Tesla. LSP interpolates the values onto the 2-D
or 3-D simulation grid. See Section 6.15 [External Fields Input], page 100.
7.6 MAG3D Magnetic Field File
The ASCII file produced by the MAG3D code (NRL) contains Bx, By, Bz data in cartesian
coordinates as follows:
nxmax
40
nymax
40
x
-10.0000
-9.48718
-8.97436
.
.
.
8.97436
9.48718
10.0000
nzmax
40
y
-10.0000
-10.0000
-10.0000
.
.
.
10.0000
10.0000
10.0000
z
-10.0000
-10.0000
-10.0000
.
.
.
10.0000
10.0000
10.0000
Bx
412.227
426.651
441.449
.
.
.
-450.803
-435.347
-420.296
By
-412.227
-426.651
-441.449
.
.
.
450.803
435.347
420.296
Bz
1.34749
1.33026
1.28552
.
.
.
-0.0855465
-0.0926784
-0.0983440
where the field values are in units of kilogauss, and the spatial coordinates are in cm. See
Section 6.15 [External Fields Input], page 100.