[ Identification | Description | Input parameters | Links ]
Source_Maxwell_3 ComponentA 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 wavelength. 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
| Name | Unit | Description | Default | |
| size | m | Edge of cube shaped source (for backward compatibility) | 0 | |
| yheight | m | Height of rectangular source | 0 | |
| xwidth | m | Width of rectangular source | 0 | |
| Lmin | AA | Lower edge of lambda distribution | ||
| Lmax | AA | Upper edge of lambda distribution | ||
| dist | m | Distance from source to focusing rectangle; at (0,0,dist) | ||
| focus_xw | m | Width of focusing rectangle | ||
| focus_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 | 1/(cm**2*st) | flux, 1 (in flux units, see above) | ||
| I2 | 1/(cm**2*st) | flux, 2 (in flux units, see above) | 0 | |
| I3 | 1/(cm**2*st) | flux, 3 - - - | 0 | |
| target_index | 1 | relative index of component to focus at, e.g. next is +1 this is used to compute 'dist' automatically. | +1 | |
| lambda0 | AA | Mean wavelength of neutrons. | 0 | |
| dlambda | AA | Wavelength spread of neutrons. | 0 |
| AT ( | , | , | ) RELATIVE | |||
|---|---|---|---|---|---|---|
| ROTATED ( | , | , | ) RELATIVE |
Source_Maxwell_3.comp.
[ Identification | Description | Input parameters | Links ]
Generated on 2023-09-19 20:01:36