FLUKA: 7} Description of FLUKA input options
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7} Description of FLUKA input options
There are more than 80 option keywords available for input in FLUKA. A summary
is given in the next section, where the commands will be shortly introduced and
grouped by type of functionality. Some of the commands, which can provide
several different services, will be mentioned in the context of more than one
group.
A complete description of each command will follow, in alphabetical order.
Introduction to the FLUKA input options
Summary of the available options.
Here is a list of the options (commands) that are at the disposal of the FLUKA
user to prepare an input file. In the rest of this section, the same commands
will be presented by grouping them according to the different services they can
provide.
ASSIGNMAt defines the correspondence between region and material indices and
defines regions where a magnetic field exists
AUXSCORE allows to filter scoring detectors of given estimator type with
auxiliary (generalized) particle distributions and dose equivalent
conversion factors, and with isotope ranges
* Start_Devel_seq
BAMJET defines the parameters of the chain hadronization algorithm
(for developers only)
* End_Devel_seq
BEAM defines most of the beam characteristics (energy, profile,
divergence, particle type)
BEAMAXES defines the axes used for a beam reference frame different from the
geometry frame
BEAMPOS defines the starting point of beam particles and the beam direction
BIASING sets importance sampling (Russian Roulette/splitting) at boundary
crossings and at high-energy hadronic collisions on a region by
region basis
* Start_Devel_seq
BME defines some I/O parameters relevant to the heavy ion event
generator BME (Boltzmann Master Equation). (For developers only)
* End_Devel_seq
COMPOUND defines a compound or a mixture or a mixture of isotopes
CORRFACT allows to alter material density for dE/dx and nuclear processes on
a region-by-region basis
DCYSCORE associates selected scoring detectors of given estimator type with
user-defined decay times
DCYTIMES defines decay times for radioactive product scoring
DEFAULTS sets FLUKA defaults for specified kinds of problems
DELTARAY activates delta-ray production by heavy charged particles and
controls energy loss and deposition
DETECT scores energy deposition in coincidence or anti-coincidence with a
trigger, on an event by event basis
DISCARD defines the particles which must not be transported
* Start_Devel_seq
DPM-PARA defines the parameters of the Dual Parton Model as implemented
in FLUKA (for developers only)
DPMJET defines some I/O parameters relevant to the heavy ion event
generator DPMJET
* End_Devel_seq
ELCFIELD sets the tracking conditions for transport in electric fields and
possibly defines an homogeneous electric field
EMF requests detailed transport of electrons, positrons and photons
EMF-BIAS defines electron/photon leading particle biasing or biases
electron/photon interaction length
EMFCUT sets energy cutoffs for electrons, positrons and photons, for
transport and production, or for switching off some physical
interactions
EMFFIX sets the size of electron steps corresponding to a fixed fraction
loss of the total energy
EMFFLUO activates production of fluorescence X rays in selected materials
EMFRAY activates Rayleigh (coherent) scattering in selected regions
EVENTBIN scores energy or star densities in a binning structure independent
from the geometry, and prints the binning output after each "event"
(primary history)
EVENTDAT prints event by event the scored star production and/or energy
deposition in each region, and the total energy balance
* Start_Devel_seq
EVENTYPE defines the hadron particle production model to be used
EVXTEST calculates hadron production histograms without transport
(for developers only)
* End_Devel_seq
EXPTRANS requests exponential transformation ("path stretching") (not yet
implemented)
FLUKAFIX sets the size of the step of muons and charged hadrons to a fixed
fraction loss of the kinetic energy
FREE switches to free-format input (geometry excluded)
GCR-SPE initialises Galactic Cosmic Ray calculations
GEOBEGIN starts the geometry description
GEOEND ends the geometry description; can also be used to activate the
geometry debugger
GLOBAL issues global declarations about the class of the problem (analogue
or weighted) and about the complexity of the geometry. It also
allows to use free format input (geometry included)
HI-PROPE defines the properties of a heavy ion primary
IONFLUCT calculates ionisation energy losses with fluctuations
IRRPROFI defines an irradiation profile for radioactive decay calculations
LAM-BIAS biases decay length and interaction length
LOW-BIAS requests non-analogue absorption and defines the energy cutoff for
low-energy neutron transport on a region by region basis
LOW-DOWN biases the downscattering probability in low energy neutron
transport on a region by region basis
LOW-MAT sets the correspondence between FLUKA materials and low-energy
neutron cross section data
LOW-NEUT requests low-energy neutron transport
LOW-PWXS sets the correspondence between the Fluka and the pointwise low
energy neutron xsec materials
MATERIAL defines a material and its properties
MAT-PROP supplies extra information about gaseous materials and materials
with fictitious or inhomogeneous density and defines other material
properties
MCSTHRES defines energy thresholds for applying the multiple Coulomb
scattering algorithm to the transport of muons and charged hadrons
MGNFIELD sets the tracking conditions for transport in magnetic fields
and possibly defines a homogeneous magnetic field
MULSOPT controls optimisation of multiple Coulomb scattering treatment. It
can also request transport with single scattering
MUPHOTON controls photonuclear interactions of high-energy heavy charged
particles (mediated by virtual photons)
* Start_Devel_seq
MYRQMD defines some I/O parameters relevant to the new heavy ion event
generator RQMD
* End_Devel_seq
OPEN defines input/output files without pre-connecting
OPT-PROP defines optical properties of materials
OPT-PROD controls Cherenkov and Transition Radiation photon production
PAIRBREM controls simulation of pair production and bremsstrahlung by
high-energy heavy charged particles
PART-THR sets different energy cutoffs for selected particles
PHOTONUC activates photon and electron interactions with nuclei, and
photomuon production
PHYSICS controls some physical processes for selected particles
PLOTGEOM calls the PLOTGEOM package to draw a slice of the geometry
POLARIZA defines polarised beams (only for photons at present)
RAD-BIOL reading BIOlogical parameter CaRDs
RADDECAY requests simulation of radioactive decays and sets the corresponding
biasing and transport conditions
RANDOMIZe sets the seeds and selects a sequence for the random number
generator
RESNUCLEi scores residual nuclei after inelastic hadronic interactions
ROT-DEFIni defines rotations/translations to be applied to user-defined
binnings
ROTPRBIN sets the storage precision (single or double) and assigns possible
rotations/translations for a given user-defined binning (USRBIN or
EVENTBIN)
* Start_Devel_seq
RQMD defines some I/O parameters relevant to the heavy ion event
generator RQMD
* End_Devel_seq
SCORE defines the energy deposited or the stars to be scored by region
SOURCE tells FLUKA to call a user-defined source routine
SPECSOUR calls special pre-defined source routines (synchrotron radiation
photons, particles created by colliding beams or by cosmic ray
sources, USRBIN as source, multiple beam spots).
SPOTBEAM defines multiple beam spots in the corresponding special source case
SPOTDIR defines multiple beam spots in the corresponding special source case
SPOTPOS defines multiple beam spots in the corresponding special source case
SPOTTRAN defines transformations for multiple beam spots
SPOTTIME defines time intervals for multiple beam spots
START defines the number of primary particles to follow, gets a primary
particle from a beam or from a source, starts the transport and
repeats until the predetermined number of primaries is reached
STEPSIZE sets the maximum step size in cm (by region) for transport of
charged particles
STERNHEIme allows users to input their own values of the density effect
parameters
STOP stops input reading
TCQUENCH sets scoring time cutoffs and/or Birks quenching parameters
THRESHOLd defines the energy threshold for star density scoring, and sets
thresholds for elastic and inelastic hadron reactions
TIME-CUT sets transport time cutoffs
TITLE gives the title of the run
TPSSCORE This card controls some scoring parameters relevant for TPS-like
calculations
USERDUMP requests a collision file and defines the events to be written
USERWEIG defines extra weighting to be applied to scored yields, fluences,
doses, residual nuclei or star densities (at scoring time)
USRBDX defines a detector for a boundary crossing fluence or current
estimator
USRBIN scores energy, star density or particle fluence in a binning
structure independent from the geometry
USRCOLL defines a detector for a collision fluence estimator
USRGCALL calls user-dependent global initialisation
USRICALL calls user-dependent initialisation
USROCALL calls user-dependent output
USRTRACK defines a detector for a track-length fluence estimator
USRYIELD defines a detector for scoring particle yield around a given
direction
WW-FACTOr defines weight windows in selected regions
WW-PROFIle defines energy group-dependent extra factors ("profiles") to modify
the basic setting of the low-energy neutron weight windows in
selected sets of regions, or the low-energy neutron importances in
each region
WW-THRESh defines the energy limits for a RR/splitting weight window
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