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Update ahdc geometry #65

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Merged
maureeungaro merged 3 commits into from
Feb 4, 2026
+13 −3
Merged

Update ahdc geometry #65

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06c4bfb
reduce the length of the AHDC cell
ftouchte Feb 3, 2026
16c1e88
update the ends points of the AHDC cells
ftouchte Feb 3, 2026
eee89ea
Merge branch 'main' into new/ahdc-geom
maureeungaro Feb 4, 2026
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12 changes: 11 additions & 1 deletion source/detector/detector.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -461,9 +461,19 @@ int detector::create_solid(goptions gemcOpt, map<string, detector> *Map)
for(int v=0; v<nz; v++)
vertices.push_back(G4TwoVector(dimensions[2*v+1], dimensions[2*v+2]));

SolidV = new G4GenericTrap(name, ///< name
if (name.size() > 27 && name.compare(19,8, "ahdccell") == 0) {
G4Box* box = new G4Box("Box",80*mm,80*mm,158*mm);
G4GenericTrap* ahdc_cell_nocut = new G4GenericTrap(name + "_nocut", ///< name
dz, ///< Half z length
vertices); ///< The (x,y) coordinates of vertices
SolidV = new G4IntersectionSolid(name, box, ahdc_cell_nocut);

} else {
SolidV = new G4GenericTrap(name, ///< name
dz, ///< Half z length
vertices); ///< The (x,y) coordinates of vertices
}

built = 1;
}

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4 changes: 2 additions & 2 deletions source/hitprocess/clas12/alert/ahdc_hitprocess.cc
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Expand Up @@ -244,10 +244,10 @@ void ahdcSignal::ComputeDocaAndTime(MHit * aHit){
// ALERT geometry
double X_sigwire_top = 0; // [mm]
double Y_sigwire_top = 0;
double Z_sigwire_top = -150;
double Z_sigwire_top = -188;
double X_sigwire_bot = 0; // [mm]
double Y_sigwire_bot = 0;
double Z_sigwire_bot = 150;
double Z_sigwire_bot = 162.5;

// Compute Y_sigwire_top, Z_sigwire_top, Y_sigwire_bot, Z_sigwire_bot
double xV0 = 0.0;
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