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

`Undulator`

Component-
**Author:**Erik B. Knudsen -
**Origin:**DTU Physics -
**Date:**May, 2013. -
**Version:**1.0

A undulator source model based on the derivation by K.J. Kim, AIP, conf. proc., 184, 1989. doi:10.1063/1.38046.

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

verbose | if nonzero, output extra information. | 0 | |

E0 | keV | Center of emitted energy spectrum (overrides lambda0). | 0 |

dE | keV | Half-width of emitted energy spectrum. | 0 |

phase | Initial phase of radiation. | 0 | |

randomphase | If !=0 phase will be random (I.e. the emitted radiation is completely incoherent). | 1 | |

Ee | GeV | Storage ring electron energy [typically a few GeV). | 2.4 |

dEe | Relative electron energy beam spread (sigma/Ee). | 0 | |

Ie | A | Ring current. | 0.4 |

tbunch | s | Bunch length. 0 means continous source. | 0 |

t0 | s | Delay of the first bunch from t=0. | 0 |

B | T | Peak magnet field strength. Overrides K. | 0 |

K | Dimensionless undulator parameter. | 0 | |

gap | m | Undulator gap. If > gap_min the actual magnetic field strength is < B. Currently ignored. | 1e-3 |

Nper | Number of magnetic periods in the undulator. | 1 | |

lu | m | Magnetic period length of the undulator. | 16e-3 |

sigey | m | Electron ring beam size in vertical plane (rms). | 0 |

sigex | m | Electron ring beam size in horizontal plane (rms). | 0 |

sigepx | rad | Electron ring beam horizontal divergence (rms). | 0 |

sigepy | rad | Electron ring beam vertical divergence (rms). | 0 |

focus_xw | m | Width of target window. | 0 |

focus_yh | 0 | ||

dist | m | Distance from source plane to target window along the optical axis. | 1 |

gauss_t | 0 | ||

quick_integ | if nonzero, use faster (but less accurate) integration scheme. | 0 | |

E1st | keV | Energy of the fundmental (1st) undulator harmonic. | 0 |

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

prms |
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alpha |
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MELE |

- Source code for
`Undulator.comp`

.

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

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