+ */
+// Octagon
+ const Int_t kNSides = 8;
+ const Float_t kStartAngle = 22.5; // deg
+ const Float_t kFullAngle = 360.0; // deg
+// Mother volume
+ const Float_t kRBMotherInner = 560.00; // cm
+ const Float_t kRBMotherOuter = 790.50; // cm
+ const Float_t kLBMother = 706.00; // cm
+// Yoke
+ const Float_t kRYokeInner = 703.50; // cm
+ const Float_t kRYokeOuter = 790.50; // cm
+ const Float_t kLYoke = 620.00; // cm
+// Coil
+ const Float_t kRCoilInner = 593.00; // cm
+ const Float_t kRCoilOuter = 682.00; // cm
+ const Float_t kLCoil = 588.00; // cm
+// Cooling
+ const Float_t kRCoolingOuter = 1.70; // cm
+ const Float_t kRCoolingInner = 1.00; // cm
+// Thermal Shield
+ const Float_t kRThermalShieldInner = 566.00; // cm
+ const Float_t kRThermalShieldOuter = 571.00; // cm
+// Crown
+ const Float_t kRCrownInner = 560.00; // cm
+ const Float_t kRCrownOuter = 785.50; // cm
+ const Float_t kLCrown1 = 605.00; // cm
+ const Float_t kLCrown2 = 620.00; // cm
+ const Float_t kLCrown3 = 706.00; // cm
+// Door
+ const Float_t kRDoorOuter = 560.00; // cm
+ const Float_t kRPlugInner = 183.50; // cm
+ const Float_t kLDoor1 = 615.50; // cm
+ const Float_t kLDoor2 = 714.60; // cm
+//
+ const Float_t kDegRad = TMath::Pi()/180.;
+
+
+ //
+ // Top volume
+ TGeoVolume* top = gGeoManager->GetVolume("ALIC");
+ // Media
+ TGeoMedium* medAir = gGeoManager->GetMedium("MAG_AIR_C1");
+ TGeoMedium* medAlu = gGeoManager->GetMedium("MAG_ALU_C1");
+ TGeoMedium* medAluI = gGeoManager->GetMedium("MAG_ALU_C0");
+ TGeoMedium* medSteel = gGeoManager->GetMedium("MAG_ST_C1");
+ TGeoMedium* medWater = gGeoManager->GetMedium("MAG_WATER");
+ //
+ // Offset between LHC and LEP axis
+ Float_t os = -30.;
+
+ //
+ // Define Barrel Mother
+ //
+ TGeoPgon* shBMother = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 2);
+ shBMother->DefineSection(0, -kLBMother, kRBMotherInner, kRBMotherOuter);
+ shBMother->DefineSection(1, kLBMother, kRBMotherInner, kRBMotherOuter);
+ //
+ TGeoVolume* voBMother = new TGeoVolume("L3BM", shBMother, medAir);
+ //
+ // Define Thermal Shield
+ //
+ // Only one layer
+ // This can be improved: replace by (protection - shield - insulation) !
+ //
+ TGeoPgon* shThermSh = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 2);
+ shThermSh->DefineSection(0, -kLCoil, kRThermalShieldInner, kRThermalShieldOuter);
+ shThermSh->DefineSection(1, kLCoil, kRThermalShieldInner, kRThermalShieldOuter);
+ //
+ TGeoVolume* voThermSh = new TGeoVolume("L3TS", shThermSh, medAluI);
+ voBMother->AddNode(voThermSh, 1, new TGeoTranslation(0., 0., 0.));
+ //
+ // Define Coils and cooling circuits
+ //
+ TGeoPgon* shCoilMother = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 2);
+ shCoilMother->DefineSection(0, -kLCoil, kRCoilInner - 2. * kRCoolingOuter, kRCoilOuter + 2. * kRCoolingOuter);
+ shCoilMother->DefineSection(1, kLCoil, kRCoilInner - 2. * kRCoolingOuter, kRCoilOuter + 2. * kRCoolingOuter);
+ //
+ // Coils
+ TGeoVolume* voCoilMother = new TGeoVolume("L3CM", shCoilMother, medAir);
+ voBMother->AddNode(voCoilMother, 1, new TGeoTranslation(0., 0., 0.));
+ // Devide into the 168 turns
+ TGeoVolume* voCoilTurn = voCoilMother->Divide("L3CD", 3, 168, 0., 0.);
+ TGeoPgon* shCoils = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 2);
+ shCoils->DefineSection(0, -3., kRCoilInner, kRCoilOuter);
+ shCoils->DefineSection(1, 3., kRCoilInner, kRCoilOuter);
+ //
+ TGeoVolume* voCoils = new TGeoVolume("L3C0", shCoils, medAlu);
+ voCoilTurn->AddNode(voCoils, 1, new TGeoTranslation(0., 0., 0.));
+ //
+ // Hexagonal Cooling circuits
+ //
+ const Float_t kRCC = kRCoolingOuter;
+ const Float_t kRCW = kRCoolingInner;
+ const Float_t kRCL = kRCC * TMath::Tan(30. / 180. * TMath::Pi());
+ const Float_t kRWL = kRCW * TMath::Tan(30. / 180. * TMath::Pi());
+ // Outer Circuits
+ //
+ // Pipe
+ TGeoPgon* shCoolingPipeO = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 4);
+ shCoolingPipeO->DefineSection(0, -kRCC, kRCoilOuter + kRCC, kRCoilOuter + kRCC + 0.01);
+ shCoolingPipeO->DefineSection(1, -kRCL, kRCoilOuter, kRCoilOuter + 2. * kRCC);
+ shCoolingPipeO->DefineSection(2, kRCL, kRCoilOuter, kRCoilOuter + 2. * kRCC);
+ shCoolingPipeO->DefineSection(3, kRCC, kRCoilOuter + kRCC, kRCoilOuter + kRCC + 0.01);
+ //
+ TGeoVolume* voCoolingPipeO = new TGeoVolume("L3CCO", shCoolingPipeO, medAlu);
+ voCoilTurn->AddNode(voCoolingPipeO, 1, new TGeoTranslation(0., 0., 0.));
+ //
+ TGeoPgon* shCoolingWaterO = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 4);
+ shCoolingWaterO->DefineSection(0, -kRCW, kRCoilOuter + kRCC, kRCoilOuter + kRCC + 0.01);
+ shCoolingWaterO->DefineSection(1, -kRWL, kRCoilOuter + (kRCC - kRCW), kRCoilOuter + kRCC + kRCW);
+ shCoolingWaterO->DefineSection(2, kRWL, kRCoilOuter + (kRCC - kRCW), kRCoilOuter + kRCC + kRCW);
+ shCoolingWaterO->DefineSection(3, kRCW, kRCoilOuter + kRCC, kRCoilOuter + kRCC + 0.01);
+ //
+ TGeoVolume* voCoolingWaterO = new TGeoVolume("L3CWO", shCoolingWaterO, medWater);
+ voCoolingPipeO->AddNode(voCoolingWaterO, 1, new TGeoTranslation(0., 0., 0.));
+
+ // Inner Circuits
+ //
+ // Pipe
+ TGeoPgon* shCoolingPipeI = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 4);
+ shCoolingPipeI->DefineSection(0, -kRCC, kRCoilInner - kRCC, kRCoilInner - kRCC + 0.01);
+ shCoolingPipeI->DefineSection(1, -kRCL, kRCoilInner - 2. * kRCC, kRCoilInner);
+ shCoolingPipeI->DefineSection(2, kRCL, kRCoilInner - 2. * kRCC, kRCoilInner);
+ shCoolingPipeI->DefineSection(3, kRCC, kRCoilInner - kRCC, kRCoilInner - kRCC + 0.01);
+ //
+ TGeoVolume* voCoolingPipeI = new TGeoVolume("L3CCI", shCoolingPipeI, medAlu);
+ voCoilTurn->AddNode(voCoolingPipeI, 1, new TGeoTranslation(0., 0., 0.));
+ //
+ TGeoPgon* shCoolingWaterI = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 4);
+ shCoolingWaterI->DefineSection(0, -kRCW, kRCoilInner - kRCC, kRCoilInner - kRCC + 0.01);
+ shCoolingWaterI->DefineSection(1, -kRWL, kRCoilInner - kRCC - kRCW, kRCoilInner - (kRCC - kRCW));
+ shCoolingWaterI->DefineSection(2, kRWL, kRCoilInner - kRCC - kRCW, kRCoilInner - (kRCC - kRCW));
+ shCoolingWaterI->DefineSection(3, kRCW, kRCoilInner - kRCC, kRCoilInner - kRCC + 0.01);
+ //
+ TGeoVolume* voCoolingWaterI = new TGeoVolume("L3CWI", shCoolingWaterI, medWater);
+ voCoolingPipeI->AddNode(voCoolingWaterI, 1, new TGeoTranslation(0., 0., 0.));
+
+ //
+ // Define Yoke
+ //
+ TGeoPgon* shYoke = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 2);
+ shYoke->DefineSection(0, -kLYoke, kRYokeInner, kRYokeOuter);
+ shYoke->DefineSection(1, +kLYoke, kRYokeInner, kRYokeOuter);
+ //
+ TGeoVolume* voYoke = new TGeoVolume("L3YO", shYoke, medSteel);
+ voBMother->AddNode(voYoke, 1, new TGeoTranslation(0., 0., 0.));
+
+ //
+ // Define Crown
+ //
+ TGeoPgon* shCrown = new TGeoPgon(kStartAngle, kFullAngle, kNSides, 4);
+ shCrown->DefineSection(0, kLCrown1, kRCrownInner, kRYokeInner);
+ shCrown->DefineSection(1, kLCrown2, kRCrownInner, kRYokeInner);
+ shCrown->DefineSection(2, kLCrown2, kRCrownInner, kRCrownOuter);
+ shCrown->DefineSection(3, kLCrown3, kRCrownInner, kRCrownOuter);
+ //
+ TGeoVolume* voCrown = new TGeoVolume("L3CR", shCrown, medSteel);
+
+ //
+ // Door including "Plug"
+ //
+ Float_t slo = 2. * kRDoorOuter * TMath::Tan(22.5 * kDegRad);
+ Float_t sli = 2. * kRPlugInner * TMath::Tan(22.5 * kDegRad);
+ Double_t xpol1[12], xpol2[12], ypol1[12], ypol2[12];
+
+ xpol1[ 0] = 2. ; ypol1[ 0] = kRDoorOuter;
+ xpol1[ 1] = slo/2. ; ypol1[ 1] = kRDoorOuter;
+ xpol1[ 2] = kRDoorOuter; ypol1[ 2] = slo/2.;
+ xpol1[ 3] = kRDoorOuter; ypol1[ 3] = -slo/2.;
+ xpol1[ 4] = slo/2. ; ypol1[ 4] = -kRDoorOuter;
+ xpol1[ 5] = 2. ; ypol1[ 5] = -kRDoorOuter;
+ xpol1[ 6] = 2. ; ypol1[ 6] = -kRPlugInner - os;
+ xpol1[ 7] = sli/2. ; ypol1[ 7] = -kRPlugInner - os;
+ xpol1[ 8] = kRPlugInner; ypol1[ 8] = -sli/2. - os;
+ xpol1[ 9] = kRPlugInner; ypol1[ 9] = sli/2. - os;
+ xpol1[10] = sli/2. ; ypol1[10] = kRPlugInner - os;
+ xpol1[11] = 2. ; ypol1[11] = kRPlugInner - os;
+
+ TGeoXtru* shL3DoorR = new TGeoXtru(2);
+ shL3DoorR->DefinePolygon(12, xpol1, ypol1);
+ shL3DoorR->DefineSection(0, kLDoor1);
+ shL3DoorR->DefineSection(1, kLDoor2);
+ TGeoVolume* voL3DoorR = new TGeoVolume("L3DoorR", shL3DoorR, medSteel);
+
+ for (Int_t i = 0; i < 12; i++) {
+ xpol2[i] = - xpol1[11 - i];
+ ypol2[i] = ypol1[11 - i];
+ }
+
+ TGeoXtru* shL3DoorL = new TGeoXtru(2);
+ shL3DoorL->DefinePolygon(12, xpol2, ypol2);
+ shL3DoorL->DefineSection(0, kLDoor1);
+ shL3DoorL->DefineSection(1, kLDoor2);
+ TGeoVolume* voL3DoorL = new TGeoVolume("L3DoorL", shL3DoorL, medSteel);
+ //
+ // Plug support plate
+ //
+ Float_t ro = kRPlugInner + 50.;
+ slo = 2. * ro * TMath::Tan(22.5 * kDegRad);
+
+ xpol1[ 0] = 2. ; ypol1[ 0] = ro - os;
+ xpol1[ 1] = slo/2. ; ypol1[ 1] = ro - os;
+ xpol1[ 2] = ro ; ypol1[ 2] = slo/2. - os;
+ xpol1[ 3] = ro ; ypol1[ 3] = -slo/2.- os;
+ xpol1[ 4] = slo/2. ; ypol1[ 4] = -ro - os;
+ xpol1[ 5] = 2. ; ypol1[ 5] = -ro - os;
+
+ for (Int_t i = 0; i < 12; i++) {
+ xpol2[i] = - xpol1[11 - i];
+ ypol2[i] = ypol1[11 - i];
+ }
+
+
+ TGeoXtru* shL3PlugSPR = new TGeoXtru(2);
+ shL3PlugSPR->DefinePolygon(12, xpol1, ypol1);
+ shL3PlugSPR->DefineSection(0, kLDoor1-10.);
+ shL3PlugSPR->DefineSection(1, kLDoor1);
+ TGeoVolume* voL3PlugSPR = new TGeoVolume("L3PlugSPR", shL3PlugSPR, medSteel);
+
+ TGeoXtru* shL3PlugSPL = new TGeoXtru(2);
+ shL3PlugSPL->DefinePolygon(12, xpol2, ypol2);
+ shL3PlugSPL->DefineSection(0, kLDoor1-10.);
+ shL3PlugSPL->DefineSection(1, kLDoor1);
+ TGeoVolume* voL3PlugSPL = new TGeoVolume("L3PlugSPL", shL3PlugSPL, medSteel);