detray::unit< scalar_t > Struct Template Reference

Unit conversion factors. More...

#include <detray/definitions/units.hpp>

Collaboration diagram for detray::unit< scalar_t >:

Static Public Attributes
static constexpr scalar_t	degree
	Conversion factor from degrees to radians.
static constexpr scalar_t	e {static_cast<scalar_t>(1.0)}
	Charge, native unit e (elementary charge).
static constexpr scalar_t	mol {static_cast<scalar_t>(1.0)}
	Amount of substance, native unit mol.
static constexpr scalar_t	mrad {static_cast<scalar_t>(1e-3)}
	Conversion factor from milliradians to radians.
static constexpr scalar_t	rad {static_cast<scalar_t>(1.0)}
	Native angular unit, the radian.
static constexpr scalar_t	T
	Magnetic field, native unit GeV/(e*mm).
static constexpr scalar_t	u {static_cast<scalar_t>(0.93149410242)}
	Atomic mass unit u 1u == 0.93149410242 GeV/c.
static constexpr scalar_t	um {static_cast<scalar_t>(1e-3)}
	Length, native unit mm.
static constexpr scalar_t	mm {static_cast<scalar_t>(1.0)}
	Native length unit, the millimetre.
static constexpr scalar_t	cm {static_cast<scalar_t>(1e1)}
	Centimetre expressed in millimetres.
static constexpr scalar_t	m {static_cast<scalar_t>(1e3)}
	Metre expressed in millimetres.
static constexpr scalar_t	mm2 {static_cast<scalar_t>(1.0)}
	Area, native unit mm2mm²
static constexpr scalar_t	cm2 {static_cast<scalar_t>(1e2)}
	cm²
static constexpr scalar_t	m2 {static_cast<scalar_t>(1e6)}
	m²
static constexpr scalar_t	mm3 {static_cast<scalar_t>(1.0)}
	Volume, native unit mm3mm³
static constexpr scalar_t	cm3 {static_cast<scalar_t>(1e3)}
	cm³
static constexpr scalar_t	m3 {static_cast<scalar_t>(1e9)}
	m³
static constexpr scalar_t	s {static_cast<scalar_t>(299792458000.0)}
	Time, native unit mm{[speed-of-light * time]{mm/s * s}}.
static constexpr scalar_t	fs {static_cast<scalar_t>(1e-15 * 299792458000.0)}
	Femtosecond expressed in the internal length-equivalent time unit.
static constexpr scalar_t	ps {static_cast<scalar_t>(1e-12 * 299792458000.0)}
	Picosecond expressed in the internal length-equivalent time unit.
static constexpr scalar_t	ns {static_cast<scalar_t>(1e-9 * 299792458000.0)}
	Nanosecond expressed in the internal length-equivalent time unit.
static constexpr scalar_t	us {static_cast<scalar_t>(1e-6 * 299792458000.0)}
	Microsecond expressed in the internal length-equivalent time unit.
static constexpr scalar_t	ms {static_cast<scalar_t>(1e-3 * 299792458000.0)}
	Millisecond expressed in the internal length-equivalent time unit.
static constexpr scalar_t	min {static_cast<scalar_t>(60.0 * 299792458000.0)}
	Minute expressed in the internal length-equivalent time unit.
static constexpr scalar_t	h {static_cast<scalar_t>(3600.0 * 299792458000.0)}
	Hour expressed in the internal length-equivalent time unit.
static constexpr scalar_t	eV {static_cast<scalar_t>(1e-9)}
	Energy, native unit GeV.
static constexpr scalar_t	keV {static_cast<scalar_t>(1e-6)}
	Kiloelectronvolt expressed in GeV.
static constexpr scalar_t	MeV {static_cast<scalar_t>(1e-3)}
	Megaelectronvolt expressed in GeV.
static constexpr scalar_t	GeV {static_cast<scalar_t>(1.0)}
	Native energy unit, the gigaelectronvolt.
static constexpr scalar_t	TeV {static_cast<scalar_t>(1e3)}
	Teraelectronvolt expressed in GeV.
static constexpr scalar_t	g {static_cast<scalar_t>(1.0 / 1.782662e-24)}
	Mass 1eV/c² == 1.782662e-36kg 1GeV/c² == 1.782662e-27kg -> 1kg == (1/1.782662e-27)GeV/c² -> 1g == (1/(1e3*1.782662e-27))GeV/c²
static constexpr scalar_t	kg {static_cast<scalar_t>(1.0 / 1.782662e-27)}
	Kilogram expressed in GeV/c².

Detailed Description

template<concepts::scalar scalar_t>
struct detray::unit< scalar_t >

Unit conversion factors.

Member Data Documentation

degree

template<concepts::scalar scalar_t>

scalar_t detray::unit< scalar_t >::degree

staticconstexpr

Initial value:

{
      static_cast<scalar_t>(0.017453292519943295)}

Conversion factor from degrees to radians.

T

template<concepts::scalar scalar_t>

scalar_t detray::unit< scalar_t >::T

staticconstexpr

Initial value:

{static_cast<scalar_t>(
      0.000299792458)}

Magnetic field, native unit GeV/(e*mm).