// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * Neither the authors of this software system, nor their employing * // * institutes,nor the agencies providing financial support for this * // * work make any representation or warranty, express or implied, * // * regarding this software system or assume any liability for its * // * use. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // G4SIunits // // Description: // // This file is a modified version of CLHEP SystemOfUnits.h // It is provided for checking the overall 'units coherence' in Geant4. // The basic units are those of the International System: // // meter // second // kilogram // ampere // degree kelvin // the amount of substance (mole) // luminous intensity (candela) // radian // steradian // // The SI numerical value of the positron charge is defined here, // as it is needed for conversion factor: positron charge = e_SI (coulomb) // // The others physical constants are defined in the CLHEP header file // for PhysicalConstants. // Authors: M.Maire, S.Giani - 10.03.1999 // -------------------------------------------------------------------- #ifndef SI_SYSTEM_OF_UNITS_HH #define SI_SYSTEM_OF_UNITS_HH 1 static constexpr double pi = 3.14159265358979323846; static constexpr double twopi = 2 * pi; static constexpr double halfpi = pi / 2; static constexpr double pi2 = pi * pi; // // Length [L] // static constexpr double meter = 1.; static constexpr double meter2 = meter * meter; static constexpr double meter3 = meter * meter * meter; static constexpr double millimeter = 0.001 * meter; static constexpr double millimeter2 = millimeter * millimeter; static constexpr double millimeter3 = millimeter * millimeter * millimeter; static constexpr double centimeter = 10. * millimeter; static constexpr double centimeter2 = centimeter * centimeter; static constexpr double centimeter3 = centimeter * centimeter * centimeter; static constexpr double kilometer = 1000. * meter; static constexpr double kilometer2 = kilometer * kilometer; static constexpr double kilometer3 = kilometer * kilometer * kilometer; static constexpr double parsec = 3.0856775807e+16 * meter; static constexpr double micrometer = 1.e-6 * meter; static constexpr double nanometer = 1.e-9 * meter; static constexpr double angstrom = 1.e-10 * meter; static constexpr double fermi = 1.e-15 * meter; static constexpr double barn = 1.e-28 * meter2; static constexpr double millibarn = 1.e-3 * barn; static constexpr double microbarn = 1.e-6 * barn; static constexpr double nanobarn = 1.e-9 * barn; static constexpr double picobarn = 1.e-12 * barn; // symbols static constexpr double nm = nanometer; static constexpr double um = micrometer; static constexpr double mm = millimeter; static constexpr double mm2 = millimeter2; static constexpr double mm3 = millimeter3; static constexpr double cm = centimeter; static constexpr double cm2 = centimeter2; static constexpr double cm3 = centimeter3; static constexpr double liter = 1.e+3 * cm3; static constexpr double L = liter; static constexpr double dL = 1.e-1 * liter; static constexpr double cL = 1.e-2 * liter; static constexpr double mL = 1.e-3 * liter; static constexpr double m = meter; static constexpr double m2 = meter2; static constexpr double m3 = meter3; static constexpr double km = kilometer; static constexpr double km2 = kilometer2; static constexpr double km3 = kilometer3; static constexpr double pc = parsec; // // Angle // static constexpr double radian = 1.; static constexpr double milliradian = 1.e-3 * radian; static constexpr double degree = (pi / 180.0) * radian; static constexpr double steradian = 1.; // symbols static constexpr double rad = radian; static constexpr double mrad = milliradian; static constexpr double sr = steradian; static constexpr double deg = degree; // // Time [T] // static constexpr double second = 1.; static constexpr double nanosecond = 1.e-9 * second; static constexpr double millisecond = 1.e-3 * second; static constexpr double microsecond = 1.e-6 * second; static constexpr double picosecond = 1.e-12 * second; static constexpr double hertz = 1. / second; static constexpr double kilohertz = 1.e+3 * hertz; static constexpr double megahertz = 1.e+6 * hertz; // symbols static constexpr double ns = nanosecond; static constexpr double s = second; static constexpr double ms = millisecond; static constexpr double us = microsecond; static constexpr double ps = picosecond; // // Mass [E][T^2][L^-2] // static constexpr double kilogram = 1.; static constexpr double gram = 1.e-3 * kilogram; static constexpr double milligram = 1.e-3 * gram; // symbols static constexpr double kg = kilogram; static constexpr double g = gram; static constexpr double mg = milligram; // // Electric current [Q][T^-1] // static constexpr double ampere = 1.; static constexpr double milliampere = 1.e-3 * ampere; static constexpr double microampere = 1.e-6 * ampere; static constexpr double nanoampere = 1.e-9 * ampere; // // Electric charge [Q] // static constexpr double coulomb = ampere * second; static constexpr double e_SI = 1.602176634e-19; // positron charge in coulomb static constexpr double eplus = e_SI * coulomb; // positron charge // // Energy [E] // static constexpr double joule = kg * m * m / (s * s); static constexpr double electronvolt = e_SI * joule; static constexpr double kiloelectronvolt = 1.e+3 * electronvolt; static constexpr double megaelectronvolt = 1.e+6 * electronvolt; static constexpr double gigaelectronvolt = 1.e+9 * electronvolt; static constexpr double teraelectronvolt = 1.e+12 * electronvolt; static constexpr double petaelectronvolt = 1.e+15 * electronvolt; // symbols static constexpr double MeV = megaelectronvolt; static constexpr double eV = electronvolt; static constexpr double keV = kiloelectronvolt; static constexpr double GeV = gigaelectronvolt; static constexpr double TeV = teraelectronvolt; static constexpr double PeV = petaelectronvolt; // // Power [E][T^-1] // static constexpr double watt = joule / second; // watt = 6.24150 e+3 * MeV/ns // // Force [E][L^-1] // static constexpr double newton = joule / meter; // newton = 6.24150 e+9 * MeV/mm // // Pressure [E][L^-3] // #define pascal hep_pascal // a trick to avoid warnings static constexpr double hep_pascal = newton / m2; // pascal = 6.24150 e+3 * MeV/mm3 static constexpr double bar = 100000 * pascal; // bar = 6.24150 e+8 * MeV/mm3 static constexpr double atmosphere = 101325 * pascal; // atm = 6.32420 e+8 * MeV/mm3 // // Electric potential [E][Q^-1] // static constexpr double megavolt = megaelectronvolt / eplus; static constexpr double kilovolt = 1.e-3 * megavolt; static constexpr double volt = 1.e-6 * megavolt; // // Electric resistance [E][T][Q^-2] // static constexpr double ohm = volt / ampere; // ohm = 1.60217e-16*(MeV/eplus)/(eplus/ns) // // Electric capacitance [Q^2][E^-1] // static constexpr double farad = coulomb / volt; // farad = 6.24150e+24 * eplus/Megavolt static constexpr double millifarad = 1.e-3 * farad; static constexpr double microfarad = 1.e-6 * farad; static constexpr double nanofarad = 1.e-9 * farad; static constexpr double picofarad = 1.e-12 * farad; // // Magnetic Flux [T][E][Q^-1] // static constexpr double weber = volt * second; // weber = 1000*megavolt*ns // // Magnetic Field [T][E][Q^-1][L^-2] // static constexpr double tesla = volt * second / meter2; // tesla =0.001*megavolt*ns/mm2 static constexpr double gauss = 1.e-4 * tesla; static constexpr double kilogauss = 1.e-1 * tesla; // // Inductance [T^2][E][Q^-2] // static constexpr double henry = weber / ampere; // henry = 1.60217e-7*MeV*(ns/eplus)**2 // // Temperature // static constexpr double kelvin = 1.; // // Amount of substance // static constexpr double mole = 1.; // // Activity [T^-1] // static constexpr double becquerel = 1. / second; static constexpr double curie = 3.7e+10 * becquerel; static constexpr double kilobecquerel = 1.e+3 * becquerel; static constexpr double megabecquerel = 1.e+6 * becquerel; static constexpr double gigabecquerel = 1.e+9 * becquerel; static constexpr double millicurie = 1.e-3 * curie; static constexpr double microcurie = 1.e-6 * curie; static constexpr double Bq = becquerel; static constexpr double kBq = kilobecquerel; static constexpr double MBq = megabecquerel; static constexpr double GBq = gigabecquerel; static constexpr double Ci = curie; static constexpr double mCi = millicurie; static constexpr double uCi = microcurie; // // Absorbed dose [L^2][T^-2] // static constexpr double gray = joule / kilogram; static constexpr double kilogray = 1.e+3 * gray; static constexpr double milligray = 1.e-3 * gray; static constexpr double microgray = 1.e-6 * gray; // // Luminous intensity [I] // static constexpr double candela = 1.; // // Luminous flux [I] // static constexpr double lumen = candela * steradian; // // Illuminance [I][L^-2] // static constexpr double lux = lumen / meter2; // // Miscellaneous // static constexpr double perCent = 0.01; static constexpr double perThousand = 0.001; static constexpr double perMillion = 0.000001; #endif