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BGO Shape + BGO Window

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This commit is contained in:
Peter DeRosa 2022-10-16 02:45:01 -04:00
parent 2cb29b1cf2
commit 24ad824019
3 changed files with 54 additions and 12 deletions
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.Detector_Parameters.hh.swp Normal file
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62
CloverDetectorConstruction.cc
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@ -10,6 +10,7 @@
#include "G4Tubs.hh"
#include "G4Sphere.hh"
#include "G4Trd.hh"
#include "G4UnionSolid.hh"
#include "G4IntersectionSolid.hh"
#include "G4SubtractionSolid.hh"
@ -99,7 +100,7 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
// Geometry parameters
G4double crystalLength = 8.*cm;
G4double crystalRadius = 25.*mm;
G4double crystalZPos = Radius; //14.*cm + crystalLength/2.;
G4double crystalZPos = Radius*mm + crystalLength/2.; //distance to target + distance to center of crystals.;
G4double cutXY = 46.0 * mm;
G4double worldSizeZ = 2*(crystalLength + crystalZPos);
@ -131,9 +132,14 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
G4double bgoXYInner = 10*mm + 2*(cutXY + 1.0) * mm;
G4double bgoZInner = crystalLength/2 + 4 * mm + crystalLength + 15*mm;
G4double bgoXYWallThickness = 103.5 * mm; //from schematic
G4double bgoanglecut = 53 * mm;
G4double bgoanglecut0 = 53 * mm ;
G4double zbgo0 = 178 * mm;
G4double bgoanglecut1 = 24.935 * mm;
G4double zbgo1 = 80*mm;
G4double bgoanglecut2 = 10 *mm ;
G4double zbgo2 = 20*mm;
// Get materials
auto backgroundMaterial = G4Material::GetMaterial("G4_AIR");
@ -193,13 +199,28 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
G4Box* case2 = new G4Box("case2", (caseXYInner + caseXYWallThickness)/2. , (caseXYInner + caseXYWallThickness)/2., caseZInner + caseZWallThickness*2.);
G4SubtractionSolid * casing = new G4SubtractionSolid("casing", case2, case1);
G4Box* bgo1 = new G4Box("bgo1", bgoXYInner/2., bgoXYInner/2., bgoZInner +10*mm);
G4Box* bgo1 = new G4Box("bgo1", bgoXYInner/2., bgoXYInner/2., bgoZInner +zbgo1);
G4Trd* bgo2 = new G4Trd("bgo2", (bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut ,(bgoXYInner+ bgoXYWallThickness)/2.
, (bgoXYInner + bgoXYWallThickness)/2. - bgoanglecut, (bgoXYInner + bgoXYWallThickness)/2., bgoZInner);
G4Trd* bgo2 = new G4Trd("bgo2", (bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut1 ,(bgoXYInner+ bgoXYWallThickness)/2.
, (bgoXYInner + bgoXYWallThickness)/2. - bgoanglecut1, (bgoXYInner + bgoXYWallThickness)/2., zbgo0/2);
G4Trd* bgo3 = new G4Trd("bgo3", (bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut0 + bgoanglecut2,(bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut1
, (bgoXYInner + bgoXYWallThickness)/2. - bgoanglecut0 + bgoanglecut2, (bgoXYInner + bgoXYWallThickness)/2.- bgoanglecut1, zbgo1/2);
G4ThreeVector bgo3_v = G4ThreeVector(0.,0.,-zbgo0 + 50*mm);
G4RotationMatrix * bgo3_m = new G4RotationMatrix();
G4VSolid* bgo_u = new G4UnionSolid("bgo2 + bgo3",bgo2,bgo3,bgo3_m,bgo3_v);
//G4Box* bgo2 = new G4Box("bgo2", (bgoXYInner+ bgoXYWallThickness)/2., (bgoXYInner + bgoXYWallThickness)/2., bgoZInner + bgoZWallThickness*2.);
G4SubtractionSolid * bgo = new G4SubtractionSolid("bgo", bgo2, bgo1);
G4Trd* bgowindow = new G4Trd("bgowindow", (bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut0 ,(bgoXYInner+ bgoXYWallThickness)/2. - bgoanglecut0 +bgoanglecut2
, (bgoXYInner + bgoXYWallThickness)/2. - bgoanglecut0, (bgoXYInner + bgoXYWallThickness)/2. -bgoanglecut0 +bgoanglecut2, zbgo2/2);
G4SubtractionSolid * bgo = new G4SubtractionSolid("bgo", bgo_u, bgo1);
// creating the subtraction solid that will form the actual bgo sheild.
@ -223,6 +244,7 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
auto caseLV = new G4LogicalVolume * [fNumOfCrystal/4];
auto bgoLV = new G4LogicalVolume * [fNumOfCrystal/4];
auto bgowindowLV = new G4LogicalVolume * [fNumOfCrystal/4];
fLogicCrystal[i]->SetVisAttributes(crystalVisAtt);
@ -243,12 +265,15 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
// if(iClover != DetNum){return 0;}
G4ThreeVector case_pos = G4ThreeVector(0,0,60*mm+crystalZPos + zmod); //The crystalZpos is the radius of the detector,
//bgo uses the same position vector and rotation matrix as the case
G4ThreeVector bgo_pos = G4ThreeVector(0,0,60*mm+crystalZPos + zmod);
G4ThreeVector case_pos = G4ThreeVector(0,0,88*mm+crystalZPos); //The crystalZpos is the radius of the detector,
//bgo uses an identical rotation matrix as the case,
//you can also add in zmod if you want to shift the shielding.
G4ThreeVector bgo_pos = G4ThreeVector(0,0,115*mm+crystalZPos);
G4ThreeVector bgowindow_pos = G4ThreeVector(0,0,-63*mm + crystalZPos);
//Set rotation matrix settings for clovers.
G4RotationMatrix * bgowindowmat = new G4RotationMatrix();
G4RotationMatrix * bgomat = new G4RotationMatrix();
G4RotationMatrix * rotmat = new G4RotationMatrix();
G4RotationMatrix * crystalmat= new G4RotationMatrix();
@ -260,6 +285,8 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
if(j == iClover){
// rotation matrix must undo the operations you perform with the position vector.
bgowindowmat->rotateZ(-dPsi*degree);
bgowindowmat->rotateX(-dTheta*degree);
bgomat->rotateZ(-dPsi*degree);
bgomat->rotateX(-dTheta*degree);
@ -275,13 +302,14 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
pos.rotateX(dTheta*degree);
pos.rotateZ(dPsi *degree);
//set rotation for the detector case vector;
case_pos.rotateX(dTheta *degree);
case_pos.rotateZ(dPsi*degree);
bgo_pos.rotateX(dTheta *degree);
bgo_pos.rotateZ(dPsi*degree);
bgowindow_pos.rotateX(dTheta *degree);
bgowindow_pos.rotateZ(dPsi*degree);
}
}
new G4PVPlacement( crystalmat, // orientation matrix
@ -297,6 +325,7 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
if( jCrystal == 0 ) {
caseLV[iClover] = new G4LogicalVolume(casing, G4Material::GetMaterial("G4_Al"), "Case");
bgoLV[iClover] = new G4LogicalVolume(bgo , G4Material::GetMaterial("G4_Al"), "BGO ");
bgowindowLV[iClover] = new G4LogicalVolume(bgowindow, G4Material::GetMaterial("G4_Al"), "BGO WINDOW ");
new G4PVPlacement( rotmat , // case orientation
case_pos, // case location
@ -315,8 +344,19 @@ G4VPhysicalVolume* CloverDetectorConstruction::DefineVolumes()
false, // no boolean operation
iClover, // copy number
fCheckOverlaps); // checking overlaps
new G4PVPlacement( bgowindowmat , // bgo orientation
bgowindow_pos, // bgo location
bgowindowLV[i/4], // its logical volume
"Bgowindow", // its name
worldLV, // its mother volume
false, // no boolean operation
iClover, // copy number
fCheckOverlaps); // checking overlaps
caseLV[iClover]->SetVisAttributes(new G4VisAttributes(G4Colour(1.0,1.0,0.0)));
bgoLV[iClover]->SetVisAttributes(new G4VisAttributes(G4Colour(0.,1.0,0.0)));
bgowindowLV[iClover]->SetVisAttributes(new G4VisAttributes(G4Colour(0.0,1.0,1.0)));
}
//Set a i+1%4 for each
//

4
Detector_Parameters.hh
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@ -31,7 +31,9 @@ const double Clover_Location[Crystal_Num/4][4] = {{0,131.75,326.96,0.},
{12,90.,51.42,0.},
{13,48.25,180.,0.},
{14,129.,180.,0.},
{15,48.25,107.35,0.}};//,
{15,48.25,107.35,0.}
};//,