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/*
* beam-parameters.h
*
* Beam parameters
*
* Copyright © 2013-2014 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2010,2012-2014 Thomas White <taw@physics.org>
* 2012 Chunhong Yoon
*
* This file is part of CrystFEL.
*
* CrystFEL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CrystFEL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef BEAM_PARAMETERS_H
#define BEAM_PARAMETERS_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
struct beam_params;
#include "hdf5-file.h"
struct beam_params
{
double fluence; /* photons per pulse */
double beam_radius; /* metres */
double photon_energy; /* eV per photon */
char *photon_energy_from; /* HDF5 dataset name */
double photon_energy_scale; /* Scale factor for photon energy, if the
* energy is to be from the HDF5 file */
double bandwidth; /* FWHM(wavelength) over wavelength.
* Note: current simulation code just uses
* a rectangular distribution with this as
* its (full) width. */
double divergence; /* divergence (radians) */
double profile_radius; /* Reciprocal space size of a reflection */
};
#ifdef __cplusplus
extern "C" {
#endif
extern struct beam_params *get_beam_parameters(const char *filename);
extern void free_beam_parameters(struct beam_params *beam);
extern void fill_in_beam_parameters(struct beam_params *beam, struct hdfile *f);
#ifdef __cplusplus
}
#endif
#endif /* BEAM_PARAMETERS_H */
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