Gaudi Framework, version v20r4
Generated: 8 Jan 2009
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Generated: 8 Jan 2009 |
00001 # File: AthenaCommon/share/SystemOfUnits.py 00002 # Author: Wim Lavrijsen (LBNL, WLavrijsen@lbl.gov) 00003 # Created: 01/21/04 00004 # Last: 01/21/04 00005 00006 # This script is a direct adaptation of CLHEP/Units/SystemOfUnits.h 00007 # and the following is the originial CLHEP comment: 00008 # 00009 # ----- 00010 # HEP coherent system of Units 00011 # 00012 # This file has been provided to CLHEP by Geant4 (simulation toolkit for HEP). 00013 # 00014 # The basic units are : 00015 # millimeter (millimeter) 00016 # nanosecond (nanosecond) 00017 # Mega electron Volt (MeV) 00018 # positron charge (eplus) 00019 # degree Kelvin (kelvin) 00020 # the amount of substance (mole) 00021 # luminous intensity (candela) 00022 # radian (radian) 00023 # steradian (steradian) 00024 # 00025 # Below is a non exhaustive list of derived and pratical units 00026 # (i.e. mostly the SI units). 00027 # You can add your own units. 00028 # 00029 # The SI numerical value of the positron charge is defined here, 00030 # as it is needed for conversion factor : positron charge = e_SI (coulomb) 00031 # 00032 # The others physical constants are defined in the header file : 00033 # PhysicalConstants.h 00034 # 00035 # Authors: M.Maire, S.Giani 00036 # 00037 # History: 00038 # 00039 # 06.02.96 Created. 00040 # 28.03.96 Added miscellaneous constants. 00041 # 05.12.97 E.Tcherniaev: Redefined pascal (to avoid warnings on WinNT) 00042 # 20.05.98 names: meter, second, gram, radian, degree 00043 # (from Brian.Lasiuk@yale.edu (STAR)). Added luminous units. 00044 # 05.08.98 angstrom, picobarn, microsecond, picosecond, petaelectronvolt 00045 # 01.03.01 parsec 00046 # ----- 00047 00048 # 00049 # Length [L] 00050 # 00051 millimeter = 1. 00052 millimeter2 = millimeter*millimeter 00053 millimeter3 = millimeter*millimeter*millimeter 00054 00055 centimeter = 10.*millimeter 00056 centimeter2 = centimeter*centimeter 00057 centimeter3 = centimeter*centimeter*centimeter 00058 00059 meter = 1000.*millimeter 00060 meter2 = meter*meter 00061 meter3 = meter*meter*meter 00062 00063 kilometer = 1000.*meter 00064 kilometer2 = kilometer*kilometer 00065 kilometer3 = kilometer*kilometer*kilometer 00066 00067 parsec = 3.0856775807e+16*meter 00068 00069 micrometer = 1.e-6 *meter 00070 nanometer = 1.e-9 *meter 00071 angstrom = 1.e-10*meter 00072 fermi = 1.e-15*meter 00073 00074 barn = 1.e-28*meter2 00075 millibarn = 1.e-3 *barn 00076 microbarn = 1.e-6 *barn 00077 nanobarn = 1.e-9 *barn 00078 picobarn = 1.e-12*barn 00079 00080 # symbols 00081 mm = millimeter 00082 mm2 = millimeter2 00083 mm3 = millimeter3 00084 00085 cm = centimeter 00086 cm2 = centimeter2 00087 cm3 = centimeter3 00088 00089 m = meter 00090 m2 = meter2 00091 m3 = meter3 00092 00093 km = kilometer 00094 km2 = kilometer2 00095 km3 = kilometer3 00096 00097 pc = parsec 00098 00099 # 00100 # Angle 00101 # 00102 radian = 1. 00103 milliradian = 1.e-3*radian 00104 degree = (3.14159265358979323846/180.0)*radian 00105 00106 steradian = 1. 00107 00108 # symbols 00109 rad = radian 00110 mrad = milliradian 00111 sr = steradian 00112 deg = degree 00113 00114 # 00115 # Time [T] 00116 # 00117 nanosecond = 1. 00118 second = 1.e+9 *nanosecond 00119 millisecond = 1.e-3 *second 00120 microsecond = 1.e-6 *second 00121 picosecond = 1.e-12*second 00122 femtosecond = 1.e-15*second 00123 00124 hertz = 1./second 00125 kilohertz = 1.e+3*hertz 00126 megahertz = 1.e+6*hertz 00127 00128 # symbols 00129 ns = nanosecond 00130 s = second 00131 ms = millisecond 00132 00133 # 00134 # Electric charge [Q] 00135 # 00136 eplus = 1. # positron charge 00137 e_SI = 1.60217733e-19 # positron charge in coulomb 00138 coulomb = eplus/e_SI # coulomb = 6.24150 e+18 * eplus 00139 00140 # 00141 # Energy [E] 00142 # 00143 megaelectronvolt = 1. 00144 electronvolt = 1.e-6*megaelectronvolt 00145 kiloelectronvolt = 1.e-3*megaelectronvolt 00146 gigaelectronvolt = 1.e+3*megaelectronvolt 00147 teraelectronvolt = 1.e+6*megaelectronvolt 00148 petaelectronvolt = 1.e+9*megaelectronvolt 00149 00150 joule = electronvolt/e_SI # joule = 6.24150 e+12 * MeV 00151 00152 # symbols 00153 MeV = megaelectronvolt 00154 eV = electronvolt 00155 keV = kiloelectronvolt 00156 GeV = gigaelectronvolt 00157 TeV = teraelectronvolt 00158 PeV = petaelectronvolt 00159 00160 # 00161 # Mass [E][T^2][L^-2] 00162 # 00163 kilogram = joule*second*second/(meter*meter) 00164 gram = 1.e-3*kilogram 00165 milligram = 1.e-3*gram 00166 00167 # symbols 00168 kg = kilogram 00169 g = gram 00170 mg = milligram 00171 00172 # 00173 # Power [E][T^-1] 00174 # 00175 watt = joule/second # watt = 6.24150 e+3 * MeV/ns 00176 00177 # 00178 # Force [E][L^-1] 00179 # 00180 newton = joule/meter # newton = 6.24150 e+9 * MeV/mm 00181 00182 # 00183 # Pressure [E][L^-3] 00184 # 00185 hep_pascal = newton/m2 # pascal = 6.24150 e+3 * MeV/mm3 00186 pascal = hep_pascal # a trick to avoid warnings 00187 bar = 100000*pascal # bar = 6.24150 e+8 * MeV/mm3 00188 atmosphere = 101325*pascal # atm = 6.32420 e+8 * MeV/mm3 00189 00190 # 00191 # Electric current [Q][T^-1] 00192 # 00193 ampere = coulomb/second # ampere = 6.24150 e+9 * eplus/ns 00194 milliampere = 1.e-3*ampere 00195 microampere = 1.e-6*ampere 00196 nanoampere = 1.e-9*ampere 00197 00198 # 00199 # Electric potential [E][Q^-1] 00200 # 00201 megavolt = megaelectronvolt/eplus 00202 kilovolt = 1.e-3*megavolt 00203 volt = 1.e-6*megavolt 00204 00205 # 00206 # Electric resistance [E][T][Q^-2] 00207 # 00208 ohm = volt/ampere # ohm = 1.60217e-16*(MeV/eplus)/(eplus/ns) 00209 00210 # 00211 # Electric capacitance [Q^2][E^-1] 00212 # 00213 farad = coulomb/volt # farad = 6.24150e+24 * eplus/Megavolt 00214 millifarad = 1.e-3*farad 00215 microfarad = 1.e-6*farad 00216 nanofarad = 1.e-9*farad 00217 picofarad = 1.e-12*farad 00218 00219 # 00220 # Magnetic Flux [T][E][Q^-1] 00221 # 00222 weber = volt*second # weber = 1000*megavolt*ns 00223 00224 # 00225 # Magnetic Field [T][E][Q^-1][L^-2] 00226 # 00227 tesla = volt*second/meter2 # tesla =0.001*megavolt*ns/mm2 00228 00229 gauss = 1.e-4*tesla 00230 kilogauss = 1.e-1*tesla 00231 00232 # 00233 # Inductance [T^2][E][Q^-2] 00234 # 00235 henry = weber/ampere # henry = 1.60217e-7*MeV*(ns/eplus)**2 00236 00237 # 00238 # Temperature 00239 # 00240 kelvin = 1. 00241 00242 # 00243 # Amount of substance 00244 # 00245 mole = 1. 00246 00247 # 00248 # Activity [T^-1] 00249 # 00250 becquerel = 1./second 00251 curie = 3.7e+10 * becquerel 00252 00253 # 00254 # Absorbed dose [L^2][T^-2] 00255 # 00256 gray = joule/kilogram 00257 00258 # 00259 # Luminous intensity [I] 00260 # 00261 candela = 1. 00262 00263 # 00264 # Luminous flux [I] 00265 # 00266 lumen = candela*steradian 00267 00268 # 00269 # Illuminance [I][L^-2] 00270 # 00271 lux = lumen/meter2 00272 00273 # 00274 # Miscellaneous 00275 # 00276 perCent = 0.01 00277 perThousand = 0.001 00278 perMillion = 0.000001