gibuu is hosted by Hepforge, IPPP Durham
GiBUU

TABLE OF CONTENTS


/initPion [ Modules ]

[ Top ] [ Modules ]

NAME

module initPion

PURPOSE

Includes the initialization of pions for pion induced events.


pionNucleus/UseCoulomb [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  logical,save   :: UseCoulomb=.false.

PURPOSE

if .true. then a Coulomb propagation from CoulombDistance to distance is performed


pionNucleus/CoulombDistance [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  real,save      :: CoulombDistance=200. ! [fm]

PURPOSE

distance from where the Coulomb propagation starts


pionNucleus/distance [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  real,save      :: distance=15. ! [fm]

PURPOSE

initialization distance


pionNucleus/impact_parameter [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  real,save      :: impact_parameter=0. ! [fm]

PURPOSE

impact parameter. If less than 0, than an impact parameter integration is performed


pionNucleus/charge [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  integer,save   :: charge=0

PURPOSE

charge of pion


pionNucleus/numberPions [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  integer,save   :: numberPions=200

PURPOSE

number of initialized pions per ensemble


pionNucleus/ekin_lab [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  real,save      :: ekin_lab=0.

PURPOSE

kinetic energies of pions in lab frame.


pionNucleus/delta_ekin_lab [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  real,save      :: delta_ekin_lab=0.01  ! [GeV]

PURPOSE

step size for kinetic energies in energy scans


pionNucleus/debug [ Global module-variables ]

[ Top ] [ pionNucleus ] [ Global module-variables ]

SOURCE

  logical, parameter :: debug=.false.

PURPOSE

Switch on debug mode


initPion/getEkin [ Functions ]

[ Top ] [ initPion ] [ Functions ]

NAME

real function getEkin

PURPOSE

This function returns the kinetic energy of the pions as they were initialized at the last call of initPionInduced.


initPion/getTotalPerweight [ Functions ]

[ Top ] [ initPion ] [ Functions ]

NAME

real function getTotalPerweight

PURPOSE

This function returns the total perweight of the pions as they were initialized at the last call of initPionInduced.


initPion/initPionInduced [ Subroutines ]

[ Top ] [ initPion ] [ Subroutines ]

NAME

subroutine initPionInduced(teilchen,raiseEnergyFlag,targetNuc)

PURPOSE

This routine initializes pions in pion-nucleus scattering.

INPUTS


initPionInduced/initInput [ Subroutines ]

[ Top ] [ initPionInduced ] [ Subroutines ]

NAME

subroutine initInput(outside)

PURPOSE

Reads input out of jobcard. Namelist 'pionNucleus'.

RESULT

logical outside !whether pions are initialized in or outside the nucleus

NOTES

Checks wether pion is initialized in- or outside the nucleus


initPion/pionNucleus [ Namelists ]

[ Top ] [ initPion ] [ Namelists ]

NAME

NAMELIST pionNucleus

PURPOSE

Includes parameters of pion initialization:


initPionInduced/setKinematics [ Subroutines ]

[ Top ] [ initPionInduced ] [ Subroutines ]

NAME

subroutine setKinematics

PURPOSE

Sets basic kinematics of the pions.


initPion/setPosition [ Subroutines ]

[ Top ] [ initPion ] [ Subroutines ]

NAME

subroutine setPosition

PURPOSE

Sets positions of the pions.

NOTES

If Impact_Parameter is choosen to be less than zero, than the impact parameter is choosen by a Monte-Carlo-decision. This is made such that the pion is initialized on a disk of radius "bmax_Innerdisk" or on a ring which surrounds the inner disk and has an outer radius of "bmaxOuterRing". The probability to be on the inner disk is given by "pInnerDisk". The inner disk and the outer ring are separetely populated by a constant number density of pions. One distinguishes between inner disk and outer ring to have the possibility to have different population densities. Assumed one would only have one disk, then most of the particles would be initialized with high impact-parameter where only few reactions take place.

The perweight is given in units of mb for impact parameter integration.


initPion/CoulombCorrect [ Subroutines ]

[ Top ] [ initPion ] [ Subroutines ]

NAME

subroutine CoulombCorrect

PURPOSE

Corrects the trajectory according to Coulomb forces.