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[ Identification | Description | Input parameters | Links ]
The Source_spectra Component
Specialized X-ray source for reading in SPECTRA 10 source definitions
Identification
- Site:
- Author: Erik Knudsen
- Origin: Risoe
- Date: November 11, 2019
Description
This is a source component for connecting SPECTRA 10-output files with McXtrace. json-style SPECTRA 11 output files are not yet supported. SPECTRA is an application software to calculate optical properties of synchrotron radiation (SR) emitted from bending magnets, wigglers (conventional and elliptical) and undulators (conventional, helical, elliptical and figure-8). Calculations of radiation from an arbitrary magnetic field distribution are also available. Parameters on the electron beam and the source can be edited completely on graphical user interfaces (GUIs) and it is possible to show the calculation result graphically. The energy spectrum and radiation power after transmitting various filters and convolution of detector's resolution are also available. See SPECTRA. If the source is symmetric in x and/or y it is possible to speed up the spectra calculations by only including one half-plane or quadrant. The other side/quadrants will then be mirrored by McXtrace. %BUGS Absolute intensity of 4D (x,y,x',y') is nor correctly normalized.
Input parameters
Parameters in boldface are required; the others are optional.| Name | Unit | Description | Default | |
| spectra_stem_x | str | Filename stem of x-projection of source distribution. -n.xxx will be added where n is a serial number and xxx spectra_suffix. | "" | |
| spectra_stem_y | str | Filename stem of y-projection of source distribution. -n.xxx will be added where n is a serial number and xxx spectra_suffix. | "" | |
| spectra_stem | str | Filename stem of x,x',y,y'-source distribution distribution. -n.xxx will be added where n is a serial number and xxx spectra_suffix. | "" | |
| spectra_suffix | str | Suffix of spectra output files. | "dsc" | |
| E0 | keV | Mean energy of X-rays. | 0 | |
| dE | keV | Energy spread of X-rays. | 0 | |
| Emin | keV | Energy of low end of the Spectra-calculated data. | ||
| Emax | keV | Energy of high end of the Spectra-calculated data. | ||
| nE | int | Number of steps in the spectra-calculations. | ||
| randomphase | 0/1 | If !=0 the photon phase is chosen randomly. | 1 | |
| phase | rad | Value of the photon phase (only used if randomphase==0). | 0 | |
| nx | int | Number of grid points along x in datafiles. If zero this is computed from the files. | 0 | |
| ny | int | Number of grid points along y in datafiles. If zero this is computed from the files. | 0 | |
| npx | int | Number of grid points along x' in datafiles. If zero this is computed from the files. | 0 | |
| npy | int | Number of grid points along y' in datafiles. If zero this is computed from the files. | 0 | |
| initial_serial | int | First serial number of the series of spectra files. | 1 | |
| symmetricx | 0/1 | If nonzero the source is mirrored in the x-axis. This to allow smaller spectra-calculations. | 0 | |
| symmetricy | 0/1 | If nonzero the source is mirrored in the y-axis. This to allow smaller spectra-calculations. | 0 | |
| verbose | 0/1 | If non-zero output more warning messages. | 0 | |
| flag4d | 0/1 | Use either (0) x,y-projections or (1) full 4D x,y,x',y' datafiles. | 0 | |
| noinit | 0/1 | Do no initialize the component. Can be usefiul in conjunction with a deactivating WHEN-clause. | 0 |
| AT ( | , | , | ) RELATIVE | |||
|---|---|---|---|---|---|---|
| ROTATED ( | , | , | ) RELATIVE |
Links
- Source code for
Source_spectra.comp. - Tanaka, J. Synchrotron Rad. (2001). 8, 1221-1228. https://doi.org/10.1107/S090904950101425X
- http://spectrax.org/spectra/
[ Identification | Description | Input parameters | Links ]
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