libamtrack (version 0.6.3)

AT.beam.par.technical.to.physical: AT.beam.par.technical.to.physical

Description

Converts technical, accelerator parameters of a symmetric, double lateral Gaussian shape beam, i.e. total number of particles and FWHM to physical beam parameters, i.e. central (=peak) fluence and width (= 1 standard deviation)

Usage

AT.beam.par.technical.to.physical(N, FWHM.mm)

Arguments

N

absolute particle numbers (array of size n).

FWHM.mm

FWHMs (in mm) (array of size n).

Value

• fluence.cm2
  resulting fluence in beam center (array of size n)
• sigma.cm
  resulting beam width stdev (array of size n)

See Also

View the C source code here: http://sourceforge.net/apps/trac/libamtrack/browser/tags/0.6.3/src/AT_Phy sicsRoutines.c#L443

Examples

# Get peak dose of a 142.66 MeV protons in Alox
# from technical beam parameters
peak.fluence.cm2 <- AT.beam.par.technical.to.physical(  N        = 3.2e8, 
                                                        FWHM.mm  = 15.2)[1]
AT.dose.Gy.from.fluence.cm2( E.MeV.u     = 142.66,
                             particle.no =
 AT.particle.no.from.particle.name("1H"),
                             material.no =
 AT.material.no.from.material.name("Aluminum Oxide"),
                             fluence.cm2 = peak.fluence.cm2,
                             stopping.power.source.no = 2)