[ Identification | Description | Input parameters | Output parameters | Links ]

The Source_Maxwell_3 Component

Source with up to three Maxwellian distributions

Identification

Description

A parametrised continuous source for modelling a (cubic) source
with (up to) 3 Maxwellian distributions.
The source produces a continuous spectrum.
The sampling of the neutrons is uniform in lambda.

Units of flux: neutrons/cm^2/second/ster
(McStas units are in general neutrons/second)

Example:  PSI cold source T1=150.42 K / 2.51 AA     I1 = 3.67 E11
                          T2=38.74 K / 4.95 AA      I2 = 3.64 E11
                          T3=14.84 K / 9.5 AA       I3 = 0.95 E11

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
size m Edge of cube shaped source (for backward compatibility) 0
height m Height of rectangular source 0
width m Width of rectangular source 0
l_low AA Lower edge of lambda distribution  
l_high AA Upper edge of lambda distribution  
dist m Distance from source to focusing rectangle; at (0,0,dist)  
xw m Width of focusing rectangle  
yh m Height of focusing rectangle  
T1 K 1st temperature of thermal distribution  
T2 K 2nd temperature of thermal distribution 300
T3 K 3nd temperature of - - - 300
I1 * l-integrated flux, 1 (in flux units, see above)  
I2 * l-integrated flux, 2 (in flux units, see above) 0
I3 * l-integrated flux, 3 - - - 0

Output parameters

Name Unit Description Default
M  
l_range  
w_mult  
w_source  
h_source  

Links

[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri May 11 08:41:08 2012