libamtrack (version 0.6.3)

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

Description

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

Usage

AT.beam.par.physical.to.technical(fluence.cm2, sigma.cm)

Arguments

fluence.cm2

fluence in beam center (array of size n).

sigma.cm

beam width stdev (array of size n).

Value

• N
  resulting absolute particle numbers (array of size n)
• FWHM.mm
  resulting FWHMs (in mm) (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#L430

Examples

# Technical parameters for a double Gaussian beam
# of Carbon ions at 270 MeV/u in water with 
# 0.5 cm sigma width and 1 Gy in the peak
AT.beam.par.physical.to.technical(  fluence.cm2 = AT.fluence.cm2.from.dose.Gy(
 E.MeV.u      = 270, 
                                                                              
 D.Gy         = 1.0, 
                                                                              
 particle.no  = AT.particle.no.from.particle.name("12C"), 
                                                                              
 material.no  = AT.material.no.from.material.name("Water, Liquid"),
                                                                              
 stopping.power.source.no = 2), 
                                    sigma.cm    = 0.5)