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Add NEXT100 generator for events on cathode surface #266

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Merged
kvjmistry merged 3 commits into from
Jun 17, 2025
Merged

Add NEXT100 generator for events on cathode surface #266

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e5f82cd
Add NEXT100 generator for events on cathode surface
kvjmistry Jun 13, 2025
2955eb0
Update generator disk thickness
kvjmistry Jun 16, 2025
f42d805
Typo fix
kvjmistry Jun 16, 2025
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1 change: 1 addition & 0 deletions source/geometries/Next100.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -239,6 +239,7 @@ namespace nexus {
else if ((region == "CENTER") ||
(region == "ACTIVE") ||
(region == "CATHODE_RING") ||
(region == "CATHODE_SURF") ||
(region == "BUFFER") ||
(region == "XENON") ||
(region == "LIGHT_TUBE") ||
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13 changes: 13 additions & 0 deletions source/geometries/Next100FieldCage.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -480,6 +480,14 @@ void Next100FieldCage::BuildCathode()
GetCoordOrigin().y(),
cathode_zpos_));

// Generate in a small 1 micron thick disk in front of cathode
cathode_surf_gen_ =
new CylinderPointSampler(0.0, cathode_int_diam_/2.,
0.5*micrometer,0., twopi, nullptr,
G4ThreeVector(GetCoordOrigin().x(),
GetCoordOrigin().y(),
cathode_grid_zpos - grid_thickn_ - 0.5*micrometer));


/// Visibilities
G4VisAttributes cathode_col = nexus::DarkGrey();
Expand Down Expand Up @@ -1079,6 +1087,7 @@ Next100FieldCage::~Next100FieldCage()
delete hdpe_gen_;
delete ring_gen_;
delete cathode_gen_;
delete cathode_surf_gen_;
delete gate_gen_;
delete anode_gen_;
delete holder_gen_;
Expand Down Expand Up @@ -1109,6 +1118,10 @@ G4ThreeVector Next100FieldCage::GenerateVertex(const G4String& region) const
vertex = cathode_gen_->GenerateVertex(VOLUME);
}

else if (region == "CATHODE_SURF"){
vertex = cathode_surf_gen_->GenerateVertex(VOLUME);
}

else if (region == "BUFFER") {
G4VPhysicalVolume *VertexVolume;
do {
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1 change: 1 addition & 0 deletions source/geometries/Next100FieldCage.h
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Expand Up @@ -112,6 +112,7 @@ namespace nexus {
CylinderPointSampler* hdpe_gen_;
CylinderPointSampler* ring_gen_;
CylinderPointSampler* cathode_gen_;
CylinderPointSampler* cathode_surf_gen_;
CylinderPointSampler* gate_gen_;
CylinderPointSampler* anode_gen_;
CylinderPointSampler* holder_gen_;
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1 change: 1 addition & 0 deletions source/geometries/Next100InnerElements.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,7 @@ namespace nexus {
if ((region == "CENTER") ||
(region == "ACTIVE") ||
(region == "CATHODE_RING") ||
(region == "CATHODE_SURF") ||
(region == "BUFFER") ||
(region == "XENON") ||
(region == "S2_PMT_LT") ||
Expand Down