detectorSimulations_v10

The detectorSimulations_v10 package contains the Geant4 simulations for GRIFFIN, TIGRESS, and all of their auxiliary detectors. Please note that in order to respect our non-disclosure agreements, all source containing third party IP have been omitted from this repo, and can be obtained from your colleagues directly at the lab.

Release

version	DOI
1.0.0

Setup

Requirements

detectorSimulations is confirmed to run on geant4.10.02 and ROOT 6.04.00. Do not use geant4.10.01 as it has a bug in the gamma de-excitation (see issue #35).

There is a new branch geant4.10.04, which was used to compile the simulation sucessfully against geant4.10.01.p01 (using ROOT 6.10/08). The main (untested) change to the branch is the removal of the explicit use of the obsolete G4FermiBreakup model in PhysListHadon. It has only been tested (so far) with a simulation of one million gamma rays of 1000 keV using only GRIFFIN (with 20 mm delrin). See also issue #40.

Getting the code

To setup the simulation package on a computer with GEANT4 already present, just copy the code to your machine:

git clone https://github.com/GRIFFINCollaboration/detectorSimulations_v10.git

Then you'll need to get the files containing our NDA-protected parameters. To do this register on gitlab.com, have your account added to the GRIFFINCollaboration, and register your ssh-keys with gitlab. Then you can run the script SetupSuppressed.sh (in the detectorSimulation_v10 folder). This script can either be run as is, which will install the suppressed files in a sub-folder "suppressed" and create symbolic links in the src directory, or you can give it the path of the directory where you want the suppressed files installed (this directory has to be empty!).

Building

The build process is pretty standard for a geant simulation; in a build directory (ie any clean new directory that isn't the source directory), do

cmake path/to/detectorSimulations
make clean
make

Keep in mind that cmake does not regenerate all the files it uses every time it runs! So if something changes and this build process suddenly fails, try deleting the build directory and starting over.

Setup FAQ

• Yes, you need both the secret suppressed files AND their unsuppressed equivalents, not just either / or.

Usage

The following might be out of date with the change to geant4.10, we haven't had time yet to verify the information below.

Particle Emission

General

Command	Brief Description	Default
/DetSys/gun/energy double unit	Set energy of particle	1000 keV
/DetSys/gun/particle string	Set particle type (e-, e+, gamma, proton, alpha)	gamma
/DetSys/gun/ion Z A E	Set ion type (excitation energy E in keV)
/DetSys/gun/direction x y z	Set momentum direction
/DetSys/gun/position x y z unit	Set particle position	0.0 0.0 0.0 mm
/DetSys/gun/radius r unit	Set source radius	0.0 mm
/DetSys/gun/energyrange min max step	Set energy (keV) of particle, loops from min to max

Decay Schemes

Command	Brief Description	Default
/DetSys/gun/betaPlusEmission filename	Simulate beta plus decay with energy distribution input file
/DetSys/gun/betaMinusEmission filename	Simulate beta negative decay with energy distribution input file
/DetSys/gun/polarization double	Set Polarization of Nuclei (before radioactiveBetaDecay)
/DetSys/gun/radioactiveBetaDecay directory	Simulate complete beta negative decay with simulation directory
/DetSys/gun/emitBetaParticle 0/1	Emit Beta Particle? True/False
/DetSys/gun/includeXRayInputFileKShell 0/1	Emit X-rays from K-shell vacancies using input file? True/False
/DetSys/gun/includeXRayInputFileLShell 0/1	Emit X-rays from L-shell vacancies using input file? True/False
/DetSys/gun/includeXRayInputFileMShell 0/1	Emit X-rays from M-shell vacancies using input file? True/False
/DetSys/gun/radioactiveDecayHalflife double	Half-life of radioactive isotope simulation (seconds)
/DetSys/gun/numberOfRadioactiveNuclei int	Set the number of radioactive nuclei
/DetSys/gun/radioactiveSourceDecay filename	Simulate source decay with a file containing the decay data

Kinematics

Whenever an electron or positron is emitted, you can choose to simulate kinematic effects (i.e. shifting of energy due to relativistic speeds of ions). You must specify the ion with /DetSys/gun/ion Z A E first.

Command	Brief Description	Default
/DetSys/gun/simulateKinematics 0/1	Choose to simulate kinematic effects	False
/DetSys/gun/kinematicsBetaValue double*	Specify beta value of incident ion	0
/DetSys/gun/kinematicsIonEnergy double unit*	Specify energy of heavy ion	0 MeV

*Only one of these should be specified

Detector Specific

GRIFFIN

Command	Brief Description	Default
/DetSys/det/addGriffinForward int	Add Detection System GriffinForward
/DetSys/det/addGriffinForwardDetector int	Add GriffinForward Detector
/DetSys/det/addGriffinBack int	Add Detection System GriffinBack
/DetSys/det/addGriffinBackDetector int	Add GriffinBack Detector
/DetSys/det/UseTIGRESSPositions	Use TIGRESS detector positions rather than GRIFFIN	False
------	----------------	------
/DetSys/det/addGriffinCustomDetector 0	Adds a detector using the paramaters specified
/DetSys/det/SetCustomShieldsPresent 0/1	Selects whether or not the detector suppressors are included	True
/DetSys/det/SetCustomRadialDistance double unit	Selects the radial distance for the detector from the origin
/DetSys/det/SetCustomExtensionSuppressorLocation 0/1	Selects a position for the extension suppressors. Either forward (0) or back (1)	Forward (0)
/DetSys/det/SetCustomDeadLayer det_num pos_num null	Sets the dead layer and position for the detector placed in the next call to addGriffinCustom
/DetSys/det/includeGriffinHevimet 0/1	Includes the Hevimet for a Griffin detector	False
/DetSys/det/addGriffinCustom int	Adds a detection system using the paramaters specified

SPICE

Command	Brief Description	Default
/DetSys/app/addSpiceTargetChamber string	Add SPICE target chamber*
/DetSys/Spice/setResolution double double	Set resolution of SPICE Si(Li)
/DetSys/det/addSpice int	Add Si(Li) detector
/DetSys/det/addS3	Add SPICE S3 detector

8PI

Command	Brief Description	Default
/DetSys/det/add8pi int	Add Detection System 8pi
/DetSys/det/add8piDetector int	Add 8pi Detector
/DetSys/app/add8piVacuumChamber	Add 8pi vacuum chamber
/DetSys/app/add8piVacuumChamberAuxMatShell double unit	Add AuxMat shell around 8pi vacuum chamber with specified thickness

Other

Command	Brief Description	Default
/DetSys/det/addGammaTracking int	Add Detection System GammaTracking
/DetSys/det/addSodiumIodide int	Add Detection System SodiumIodide
/DetSys/det/addLanthanumBromide int	Add Detection System LanthanumBromide
/DetSys/det/addSceptar int	Add Detection System Sceptar
/DetSys/det/addPaces int	Add Detection System Paces

Detector General

/DetSys/det/update must be called before using beamOn if the geometrical values have been altered.

World Volume (i.e. experimental hall)

Command	Brief Description	Default
/DetSys/world/material string	Select material for the world	G4_AIR
/DetSys/world/dimensions x y z unit	Set world dimensions	10m x 10m x 10m
/DetSys/world/vis 0/1	Set world visibility (depreciated)	False

Generic Target

Command	Brief Description	Default
/DetSys/app/genericTarget string	Create a target with specified material
/DetSys/app/genericTargetDimensions x y z unit	Set target dimensions
/DetSys/app/genericTargetPosition x y z unit	Set target position
Requires all three commands to build

Field Box

Command	Brief Description	Default
/DetSys/app/fieldBoxMaterial string	Create a field box with specified material
/DetSys/app/fieldBoxDimensions x y z unit	Set field box dimensions
/DetSys/app/fieldBoxPosition x y z unit	Set field box position
/DetSys/app/fieldBoxMagneticField x y z unit	Set field box magnetic field
Requires all four commands to build

Box

Command	Brief Description	Default
/DetSys/det/boxMat string	Set box material	G4_WATER
/DetSys/det/boxThickness double unit	Set box thickness	0.0 mm
/DetSys/det/boxInnerDimensions x y z unit	Set box inner dimensions	0.0 0.0 0.0 mm
/DetSys/det/boxColour r g b	Set box colour	0.0 0.0 1.0
/DetSys/det/addBox	Build/add box (if thickness is not 0)

Grid

Command	Brief Description	Default
/DetSys/det/gridMat string	Set grid material	G4_WATER
/DetSys/det/gridSize double unit	Set grid size	0.0 mm
/DetSys/det/gridDimensions x y z unit	Set grid dimensions	0.0 0.0 0.0 mm
/DetSys/det/gridColour r g b	Set grid colour	1.0 0.0 0.0
/DetSys/det/addGrid	Build/add grid (if grid size is not 0)

Magnetic Fields

Command	Brief Description	Default
/DetSys/world/magneticField x y z unit	Set world magnetic field (depreciated)	0, 0, 0
/DetSys/world/tabMagneticField filename	Set tabulated magnetic field*	Disabled
/DetSys/gun/coneRadius radius unit	Set cone radius

*Used for SPICE: these files are 50Mb each and are different for each lens so until a better solution comes along they will be kept on the network at TRIUMF (email Mohamad, Lee, or Michael for precise location)

Command	Brief Description	Default