rest-for-physics · lobis · Dec 15, 2022 · Dec 15, 2022 · Dec 15, 2022 · Feb 22, 2023
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+
+<!--
+Author: Luis Obis ([email protected])
+-->
+
+<restG4>
+    <TRestRun title="GammaBiasing">
+        <parameter name="experimentName" value="IAXO"/>
+    </TRestRun>
+
+    <TRestGeant4Metadata>
+        <parameter name="gdmlFile" value="geometry/setup.gdml"/>
+        <parameter name="seed" value="137"/>
+        <parameter name="nRequestedEntries" value="1"/>
+        <parameter name="saveAllEvents" value="false"/>
+
+        <generator type="cosmic">
+            <source particle="gamma">
+                <energy type="formula" name="cosmic" range="(1, 100)GeV"/>
+                <angular type="formula" name="Cos2" direction="(0,-1,0)" nPoints="1000"/>
+            </source>
+        </generator>
+
+        <detector>
+            <parameter name="maxStepSize" value="1mm"/>
+            <removeUnwantedTracks enabled="true" keepZeroEnergyTracks="true"/>
+
+            <volume name="gasVolume" sensitive="true" maxStepSize="0.05mm"/>
+            <volume name="^scintillatorVolume" sensitive="false" keepTracks="false" maxStepSize="0.5mm"/>
+            <volume name="^captureLayerVolume" sensitive="false" keepTracks="false" maxStepSize="0.05mm"/>
+            <volume name="shieldingVolume" sensitive="false" maxStepSize="5mm"/>
+        </detector>
+
+        <biasing type="split">
+            <volume name="shieldingVolume"/>
+            <parameter name="splittingFactor" value="2"/>
+            <parameter name="center" value="(0,0,0)mm"/>
+        </biasing>
+
+    </TRestGeant4Metadata>
+
+    <TRestGeant4PhysicsLists>
+        <parameter name="cutForGamma" value="1" units="mm"/>
+        <parameter name="cutForElectron" value="1" units="mm"/>
+        <parameter name="cutForPositron" value="1" units="mm"/>
+        <parameter name="cutForMuon" value="1" units="mm"/>
+        <parameter name="cutForNeutron" value="1" units="mm"/>
+
+        <parameter name="minEnergyRangeProductionCuts" value="1" units="keV"/>
+        <parameter name="maxEnergyRangeProductionCuts" value="1" units="GeV"/>
+
+        <physicsList name="G4EmLivermorePhysics">
+            <option name="pixe" value="false"/>
+        </physicsList>
+
+        <physicsList name="G4HadronElasticPhysicsHP"/>
+        <physicsList name="G4IonBinaryCascadePhysics"/>
+        <physicsList name="G4HadronPhysicsQGSP_BIC_HP"/>
+        <physicsList name="G4EmExtraPhysics"/>
+
+        <physicsList name="G4DecayPhysics"/>
+        <physicsList name="G4RadioactiveDecayPhysics"/>
+        <physicsList name="G4RadioactiveDecay">
+            <option name="ICM" value="true"/>
+            <option name="ARM" value="true"/>
+        </physicsList>
+
+        <physicsList name="G4NeutronTrackingCut"/>
+
+    </TRestGeant4PhysicsLists>
+</restG4>
@@ -29,7 +29,7 @@ Author: Luis Obis ([email protected])
             <volume name="gasVolume" sensitive="true" maxStepSize="0.05mm"/>
             <volume name="^scintillatorVolume" sensitive="false" keepTracks="true" maxStepSize="0.5mm"/>
             <volume name="^captureLayerVolume" sensitive="false" keepTracks="true" maxStepSize="0.05mm"/>
-            <volume name="ShieldingVolume" sensitive="false" maxStepSize="5mm"/>
+            <volume name="shieldingVolume" sensitive="false" maxStepSize="5mm"/>
         </detector>
     </TRestGeant4Metadata>
 

@@ -465,7 +465,7 @@
             <materialref ref="G4_Galactic"/>
             <solidref ref="detectorPipeInside"/>
         </volume>
-        <assembly name="DetectorPipe">
+        <assembly name="detectorPipe">
             <physvol name="detectorPipe">
                 <volumeref ref="detectorPipeVolume"/>
             </physvol>
@@ -474,13 +474,13 @@
                 <position name="detectorPipeFilling.position" z="82.675" unit="mm"/>
             </physvol>
         </assembly>
-        <volume name="ShieldingVolume">
+        <volume name="shieldingVolume">
             <materialref ref="G4_Pb"/>
             <solidref ref="leadBoxWithShaftSolid"/>
         </volume>
-        <assembly name="Shielding">
+        <assembly name="shielding">
             <physvol name="shielding20cm">
-                <volumeref ref="ShieldingVolume"/>
+                <volumeref ref="shieldingVolume"/>
                 <position name="shielding20cm.position" z="29.5" unit="mm"/>
             </physvol>
         </assembly>
@@ -895,11 +895,11 @@
                 <volumeref ref="Chamber"/>
             </physvol>
             <physvol name="DetectorPipe">
-                <volumeref ref="DetectorPipe"/>
+                <volumeref ref="detectorPipe"/>
                 <position name="DetectorPipe.position" z="27.0" unit="mm"/>
             </physvol>
             <physvol name="Shielding">
-                <volumeref ref="Shielding"/>
+                <volumeref ref="shielding"/>
             </physvol>
             <physvol name="VetoSystem">
                 <volumeref ref="assembly-3"/>

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+
+<!--
+Author: Luis Obis ([email protected])
+-->
+
+<restG4>
+    <TRestRun title="ShieldingBiasing">
+        <parameter name="experimentName" value="IAXO"/>
+    </TRestRun>
+
+    <TRestGeant4Metadata>
+        <parameter name="gdmlFile" value="geometry/setup.gdml"/>
+        <parameter name="seed" value="137"/>
+        <parameter name="saveAllEvents" value="false"/>
+
+        <biasing type="split">
+            <volume name="shieldingVolume"/>
+            <parameter name="splittingFactor" value="2"/>
+            <parameter name="center" value="(0,0,0)mm"/>
+        </biasing>
+
+        <generator type="point" position="(0,0,-100)" units="mm">
+            <source particle="gamma">
+                <energy type="mono" energy="10.0" units="MeV"/>
+                <angular type="flux" direction="(0,0,1)"/>
+            </source>
+        </generator>
+
+        <detector>
+            <parameter name="maxStepSize" value="1mm"/>
+            <removeUnwantedTracks enabled="true" keepZeroEnergyTracks="true"/>
+
+            <volume name="target" sensitive="true" kill="true" maxStepSize="0.05mm"/>
+
+        </detector>
+
+    </TRestGeant4Metadata>
+
+    <TRestGeant4PhysicsLists>
+        <parameter name="cutForGamma" value="1" units="mm"/>
+        <parameter name="cutForElectron" value="1" units="mm"/>
+        <parameter name="cutForPositron" value="1" units="mm"/>
+        <parameter name="cutForMuon" value="1" units="mm"/>
+        <parameter name="cutForNeutron" value="1" units="mm"/>
+
+        <parameter name="minEnergyRangeProductionCuts" value="1" units="keV"/>
+        <parameter name="maxEnergyRangeProductionCuts" value="1" units="GeV"/>
+
+        <physicsList name="G4EmLivermorePhysics">
+            <option name="pixe" value="false"/>
+        </physicsList>
+
+        <physicsList name="G4HadronElasticPhysicsHP"/>
+        <physicsList name="G4IonBinaryCascadePhysics"/>
+        <physicsList name="G4HadronPhysicsQGSP_BIC_HP"/>
+        <physicsList name="G4EmExtraPhysics"/>
+
+        <physicsList name="G4DecayPhysics"/>
+        <physicsList name="G4RadioactiveDecayPhysics"/>
+        <physicsList name="G4RadioactiveDecay">
+            <option name="ICM" value="true"/>
+            <option name="ARM" value="true"/>
+        </physicsList>
+
+        <physicsList name="G4NeutronTrackingCut"/>
+
+    </TRestGeant4PhysicsLists>
+</restG4>
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8" standalone="no" ?>
+<!-- ##VERSION REST Example 01.NLDBD Version 1.0## -->
+
+<!DOCTYPE gdml [
+        <!ENTITY materials SYSTEM "https://rest-for-physics.github.io/materials/rest.xml">
+        ]>
+
+<gdml xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      xsi:noNamespaceSchemaLocation="http://service-spi.web.cern.ch/service-spi/app/releases/GDML/schema/gdml.xsd">
+
+    <!-- Just an example of main geometry file : myGeometryTemplate.gdml
+         This file just defines de parameters of the geometry.
+         The geometry it is defined in geometry/myGeometryDefinition.gdml
+         The materials are defined in geometry/materials.xml
+         Author :   J. Galan    Date : 09-Jul-2015
+    -->
+
+    <!-- All values should be in mm -->
+
+    <define>
+        <constant name="world_size" value="2000"/>
+
+        <variable name="shieldingThickness" value="200"/>
+        <variable name="shieldingSide" value="1000"/>
+
+        <!-- This should not be required because it's not relevant -->
+        <variable name="targetGasDensity" value="1.78"/> <!-- mg/cm3 -->
+        <variable name="quencherDensity" value="2.51*0.01"/> <!-- mg/cm3 -->
+        <variable name="quencherFraction" value="0.01"/>
+        <variable name="gasTemperature" value="300"/>
+        <variable name="gasPressure" value="1"/>
+
+    </define>
+
+    &materials;
+
+    <solids>
+        <box name="WorldSolid" x="world_size" y="world_size" z="world_size" lunit="mm"/>
+        <box name="shieldingSolid" x="shieldingSide" y="shieldingSide" z="shieldingThickness" lunit="mm"/>
+        <box name="targetSolid" x="shieldingSide / 2" y="shieldingSide / 2" z="shieldingThickness / 2" lunit="mm"/>
+
+    </solids>
+
+    <structure>
+
+        <volume name="targetVolume">
+            <materialref ref="Lead"/>
+            <solidref ref="targetSolid"/>
+        </volume>
+
+        <volume name="shieldingVolume">
+            <materialref ref="Lead"/>
+            <solidref ref="shieldingSolid"/>
+        </volume>
+
+        <volume name="World">
+            <materialref ref="Vacuum"/>
+            <solidref ref="WorldSolid"/>
+
+            <physvol name="target">
+                <volumeref ref="targetVolume"/>
+                <position name="targetPosition" unit="mm" x="0" y="0" z="2 * shieldingThickness"/>
+            </physvol>
+
+            <physvol name="shielding">
+                <volumeref ref="shieldingVolume"/>
+                <position name="shieldingPosition" unit="mm" x="0" y="0" z="1 * shieldingThickness"/>
+            </physvol>
+        </volume>
+
+    </structure>
+
+    <setup name="Default" version="1.0">
+        <world ref="World"/>
+    </setup>
+
+</gdml>
@@ -0,0 +1,80 @@
+
+#ifndef REST_BIASING_H
+#define REST_BIASING_H
+
+#include <TVector3.h>
+
+#include <G4BiasingProcessInterface.hh>
+#include <G4ParticleChange.hh>
+#include <G4VBiasingOperation.hh>
+#include <G4VBiasingOperator.hh>
+
+class GammaBiasingOperation : public G4VBiasingOperation {
+   public:
+    GammaBiasingOperation(const G4String& name, G4int splittingFactor, const TVector3& biasingCenter);
+
+    virtual ~GammaBiasingOperation();
+
+   public:
+    virtual const G4VBiasingInteractionLaw* ProvideOccurenceBiasingInteractionLaw(
+        const G4BiasingProcessInterface*, G4ForceCondition&) {
+        return 0;
+    }
+
+    virtual G4VParticleChange* ApplyFinalStateBiasing(const G4BiasingProcessInterface*, const G4Track*,
+                                                      const G4Step*, G4bool&);
+
+    virtual G4double DistanceToApplyOperation(const G4Track*, G4double, G4ForceCondition*) { return DBL_MAX; }
+
+    virtual G4VParticleChange* GenerateBiasingFinalState(const G4Track*, const G4Step*) { return 0; }
+
+   public:
+    void SetSplittingFactor(G4int splittingFactor) { fSplittingFactor = splittingFactor; }
+
+    G4int GetSplittingFactor() const { return fSplittingFactor; }
+
+   private:
+    G4int fSplittingFactor;
+    G4ParticleChange fParticleChange;
+    TVector3 fBiasingCenter;
+};
+
+class GammaBiasingOperator : public G4VBiasingOperator {
+   public:
+    GammaBiasingOperator(int splittingFactor, bool biasOnlyOnce, const TVector3& biasingCenter);
+
+    virtual ~GammaBiasingOperator() {}
+
+   public:
+    virtual void StartRun();
+
+    virtual void StartTracking(const G4Track* track);
+
+    TVector3 GetBiasingCenter() const { return fBiasingCenter; }
+
+   private:
+    virtual G4VBiasingOperation* ProposeNonPhysicsBiasingOperation(const G4Track*,
+                                                                   const G4BiasingProcessInterface*) {
+        return 0;
+    }
+
+    virtual G4VBiasingOperation* ProposeOccurenceBiasingOperation(const G4Track*,
+                                                                  const G4BiasingProcessInterface*) {
+        return 0;
+    }
+
+    virtual G4VBiasingOperation* ProposeFinalStateBiasingOperation(
+        const G4Track* track, const G4BiasingProcessInterface* callingProcess);
+
+   private:
+    using G4VBiasingOperator::OperationApplied;
+
+   private:
+    GammaBiasingOperation* fBremSplittingOperation;
+    G4int fSplittingFactor;
+    G4bool fBiasOnlyOnce;
+    G4int fNInteractions;
+    TVector3 fBiasingCenter;
+};
+
+#endif  // REST_BIASING_H
@@ -10,18 +10,24 @@
 
 #include "SimulationManager.h"
 
+class G4GenericBiasingPhysics;
+
 class PhysicsList : public G4VModularPhysicsList {
    public:
     PhysicsList() = delete;
+
     explicit PhysicsList(SimulationManager* simulationManager, TRestGeant4PhysicsLists* restPhysicsLists);
+
     ~PhysicsList() override;
 
    protected:
     // Construct particle and physics
     virtual void InitializePhysicsLists();
 
     void ConstructParticle() override;
+
     void ConstructProcess() override;
+
     void SetCuts() override;
 
    private:
@@ -36,6 +42,8 @@ class PhysicsList : public G4VModularPhysicsList {
     G4VPhysicsConstructor* fRadDecPhysicsList = nullptr;
     std::vector<G4VPhysicsConstructor*> fHadronPhys;
 
+    G4GenericBiasingPhysics* fBiasingPhysicsList = nullptr;
+
     TRestGeant4PhysicsLists* fRestPhysicsLists = nullptr;
 };
 

@@ -17,7 +17,6 @@ class SimulationManager;
 class TrackingAction : public G4UserTrackingAction {
    public:
     TrackingAction(SimulationManager*);
-    ~TrackingAction();
 
     virtual void PreUserTrackingAction(const G4Track*);
     virtual void PostUserTrackingAction(const G4Track*);