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7.12 The Pol_Bfield_stop McStas Component
Magnetic field component.
Identification
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Author: Erik B Knudsen, Peter Christiansen, and Peter Willendrup
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Origin: RISOE
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Date: August 2006
Description
End of magnetic field region defined by the latest preceeding Pol_Bfield component.
The component is concentric. It means that it requires a
// START MAGNETIC FIELD COMPONENT msf =
Pol_Bfield(xw=0.08, yh=0.08, length=0.2, Bx=0, By=-0.678332e-4, Bz=0)
AT (0, 0, 0) RELATIVE armMSF
// HERE CAN BE OTHER COMPONENTS INSIDE THE MAGNETIC FIELD
// STOP MAGNETIC FIELD COMPONENT msfCp = Pol_Bfield_stop() AT ("SOMEWHERE") RELATIVE armMSF
In between the two components the propagation routine PROP_DT also handles the spin propagation. The current algorithm used for spin propagation is: SimpleNumMagnetPrecession in pol-lib. and does not handle gravity.
GRAVITY: NO POLARISATION: YES
Example: Pol_Bfield_stop()
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
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geometry |
str |
Name of an Object File Format (OFF) or PLY file for complex field-geometry. |
"" |
|
yheight |
m |
Height of opening. |
0 |
|
xwidth |
m |
Width of opening. |
0 |
|
zdepth |
m |
Length of field. |
0 |
|
radius |
m |
Radius of field if it is cylindrical or spherical. |
0 |
|
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Links
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Component source code found in file Pol_Bfield_stop.comp.
