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

`Source_Maxwell_3`

Component-
**Author:**Kim Lefmann -
**Origin:**Risoe -
**Date:**March 2001 -
**Version:**(Unknown)

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 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 | for backward compatibility | [m] Edge of cube shaped source | 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 |
0,0,dist | [m] Distance from source to focusing rectangle; at | |

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 |
in flux units, see above | [1/(cm**2*st)] flux, 1 | |

I2 | in flux units, see above | [1/(cm**2*st)] flux, 2 | 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 |

Name | Unit | Description | Default |
---|---|---|---|

M |
|||

l_range |
|||

w_mult |
|||

w_source |
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h_source |

- Source code for
`Source_Maxwell_3.comp`

.

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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Oct 11 07:30:13 2019