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File indexing completed on 2025-02-22 10:31:24
0001 //----------------------------------*-C++-*----------------------------------// 0002 // Copyright 2024 UT-Battelle, LLC, and other Celeritas developers. 0003 // See the top-level COPYRIGHT file for details. 0004 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0005 //---------------------------------------------------------------------------// 0006 //! \file celeritas/io/ImportUnits.hh 0007 //---------------------------------------------------------------------------// 0008 #pragma once 0009 0010 #include "celeritas/Types.hh" 0011 0012 namespace celeritas 0013 { 0014 //---------------------------------------------------------------------------// 0015 /*! 0016 * Quantity of measure enumeration for imported data. 0017 * 0018 * These enumeration values are used to scale values between the Celeritas 0019 * native unit system and the CLHEP/Geant4 values. Note that MeV quantities are 0020 * set to unity for this special case (i.e. they retain their energy scaling 0021 * and need to be wrapped with the \c MevEnergy quantity when used in 0022 * Celeritas). 0023 * 0024 * \todo Rename to ImportUnit 0025 */ 0026 enum class ImportUnits 0027 { 0028 unitless, //!< No dimension 0029 mev, //!< Energy [MeV] 0030 mev_per_len, //!< Energy loss [MeV/len] 0031 len, //!< Range [len] 0032 len_inv, //!< Macroscopic xs [1/len] 0033 len_mev_inv, //!< Scaled (1/E) macroscopic xs [1/len-MeV] 0034 mev_sq_per_len, //!< Scaled [E^2] macroscopic xs [MeV^2/len] 0035 len_sq, //!< Microscopic cross section [len^2] 0036 mev_len_sq, //!< [MeV-len^2] 0037 time, //!< Time [time] 0038 inv_len_cb, //!< Number density [1/len^3] 0039 len_time_sq_per_mass, //!< Inverse pressure [len-time^2/mass] 0040 inv_mev, //!< Inverse energy [1/MeV] 0041 size_, 0042 // Deprecated aliases 0043 none = unitless, //!< Deprecated 0044 mev_per_cm = mev_per_len, //!< Deprecated 0045 cm = len, //!< Deprecated 0046 cm_inv = len_inv, //!< Deprecated 0047 cm_mev_inv = len_mev_inv, //!< Deprecated 0048 mev_2_per_cm = mev_sq_per_len, //!< Deprecated 0049 cm_2 = len_sq, //!< Deprecated 0050 }; 0051 0052 //---------------------------------------------------------------------------// 0053 // FREE FUNCTIONS 0054 //---------------------------------------------------------------------------// 0055 0056 // Get the string label for units 0057 char const* to_cstring(ImportUnits q); 0058 0059 // Get the multiplier to turn this quantity to a native value 0060 double native_value_from(UnitSystem sys, ImportUnits q); 0061 0062 // Get the multiplier to turn a unit Geant4 value to a native value 0063 double native_value_from_clhep(ImportUnits q); 0064 0065 //---------------------------------------------------------------------------// 0066 } // namespace celeritas
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