Reflectivity and transmittivity calculation with xradyb - #62
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I tested compiling via Visual Studio on Windows, and via CMake in WSL2/Linux. Example 22 works in both cases without additional edits. It works well. Maybe we should think about the results when xraydb is not installed. I see that warnings are emitted indicating that it's missing, but I wonder if it might be better to error out so that we do not show results that are likely to not be what the user is expecting. |
| static const char strEr_BadOptWG[] = "Incorrect Optical Waveguide structure"; | ||
| static const char strEr_BadOptG[] = "Incorrect Optical Grating structure"; | ||
| static const char strEr_BadOptT[] = "Incorrect Optical Generic Transmission structure"; | ||
| static const char strEr_BadOptR[] = "Incorrect Reflectivity Object structure"; |
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Maybe "Incorrect Reflectivity structure"?
| from srwpy.srwlib import * | ||
| from srwpy.uti_plot import * | ||
| from srwpy.uti_mtrl import * | ||
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Something like:
xraydb_avail = False
try:
import ...
xraydb_avail = True
except:
....
?
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| # Aluminum filter | ||
| filter_thick = 50.e-06 # [m] | ||
| al_delta, al_atten_len = calc_delta_atten_len('Al', photon_energy) |
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Hard code or load values from files for when xraydb is unavailable?
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This PR adds utilities for calculating SRW-compatible reflectivity and transmittivity coefficients using
xraydblibrary.This way material properties for optical elements can be defined alongside the propagation script, rather then being imported from file or pre-calculated elsewhere.
We are adding the
srwlpy.uti_mtrlmodule with the following utilities:calc_refl_arrcalc_coated_refl_arrcalc_multilayer_refl_arrcalc_delta_atten_lensrwl_opt_setup_transm_from_materialadd_matNew example is added featuring new capabilities, see
Example22. In this example we demonstrate how to add a filter made of a pre-defined material (Aluminum), bulk mirror made of a new material (B4C), a coated mirror (pre-defined Pt on Si), and a Diamond CRL array (providing custom density).Python/C++ wrapper code is modified to provide safe reflectivity array object cleanup.
xraydbis an optional depenedency. If this package is missing, or material definition is incomplete - utility functions will substitute the amplitude of 1 for reflectivity and 0 for absorption. Users can add new materials to the runtime instance of xraydb withadd_mat(Chemical composition and density are required)