--- /dev/null
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/* $Id$ */
+
+//-------------------------------------------------------------------------
+// The Front Absorber FA
+// As built
+// Author: A.Morsch
+// andreas.morsch@cern.ch
+//-------------------------------------------------------------------------
+
+#include <TVirtualMC.h>
+#include <TArrayI.h>
+#include <TGeoVolume.h>
+#include <TGeoTube.h>
+#include <TGeoManager.h>
+#include <TGeoMatrix.h>
+#include <TGeoCompositeShape.h>
+#include <TGeoBBox.h>
+#include <TGeoPgon.h>
+#include <TGeoTorus.h>
+#include <TGeoCone.h>
+#include <TGeoArb8.h>
+
+#include "AliABSOv3.h"
+#include "AliConst.h"
+#include "AliLog.h"
+
+ClassImp(AliABSOv3)
+
+//_____________________________________________________________________________
+AliABSOv3::AliABSOv3()
+{
+ //
+ // Default constructor for muon shield
+ //
+}
+
+//_____________________________________________________________________________
+AliABSOv3::AliABSOv3(const char *name, const char *title)
+ : AliABSO(name,title)
+{
+ // Standard constructor for muon shield
+ //
+}
+
+//_____________________________________________________________________________
+void AliABSOv3::CreateGeometry()
+{
+ //
+ // Build muon shield geometry
+ //
+ //
+
+ Float_t z, z0, dz;
+//
+// The top volume
+//
+ TGeoVolume* top = gGeoManager->GetVolume("ALIC");
+
+//
+// Translation
+//
+ TGeoTranslation* vec0 = new TGeoTranslation(0., 0., 0.);
+//
+// Media
+//
+ TGeoMedium* kMedNiW = gGeoManager->GetMedium("ABSO_Ni/W0");
+ TGeoMedium* kMedNiWsh = gGeoManager->GetMedium("ABSO_Ni/W3");
+ TGeoMedium* kMedSteel = gGeoManager->GetMedium("ABSO_ST_C0");
+ TGeoMedium* kMedSteelSh = gGeoManager->GetMedium("ABSO_ST_C3");
+ TGeoMedium* kMedAir = gGeoManager->GetMedium("ABSO_AIR_C0");
+
+ TGeoMedium* kMedPb = gGeoManager->GetMedium("ABSO_PB_C0");
+ TGeoMedium* kMedPbSh = gGeoManager->GetMedium("ABSO_PB_C2");
+
+ TGeoMedium* kMedConc = gGeoManager->GetMedium("ABSO_CC_C0");
+
+ TGeoMedium* kMedCH2 = gGeoManager->GetMedium("ABSO_CH2_C0");
+
+ TGeoMedium* kMedC = gGeoManager->GetMedium("ABSO_C_C0");
+ TGeoMedium* kMedCsh = gGeoManager->GetMedium("ABSO_C_C2");
+
+ TGeoMedium* kMedAlu = gGeoManager->GetMedium("ABSO_ALU_C0");
+//
+ const Float_t kDegRad = TMath::Pi() / 180.;
+
+//
+ TGeoRotation* rotxz = new TGeoRotation("rotxz", 90., 0., 90., 90., 180., 0.);
+///////////////////////////////////
+// //
+// Front Absorber //
+// Drawing ALIP2A__0106 //
+// //
+// //
+///////////////////////////////////
+//
+// Pos 1 Steel Envelope
+// Pos 2 End Plate
+// Pos 3 Flange (wrong arrow in the drawing)
+// Pos 4 W Plate A
+// Pos 5 W Plate B
+// Pos 6 Tungsten Tube Part 1
+// Pos 7 Tungsten Tube Part 2
+// Pos 8 Tungsten Tube Part 3
+// Pos 9 Tungsten Tube Part 4
+// Pos 10 Tungsten Tail
+// Pos 11 Graphite Cone
+// Pos 12 Pb Cone
+// Pos 13 Concrete Cone
+// Pos 14 Polyethylene Parts
+// Pos 15 Steel Plate 25 cm
+// Pos 16 Steel Plate 31 cm
+// Pos 17 Magnesium Ring
+// Pos 18 Composite Ring
+//
+//
+// Mimimum angle of the tracking region
+ const Float_t angle02 = TMath::Tan( 2. * kDegRad);
+// Maximum angle of the tracking region
+ const Float_t angle10 = TMath::Tan(10. * kDegRad);
+// Opening angle of W rear plug
+ const Float_t angle03 = TMath::Tan( 3. * kDegRad);
+//
+ const Float_t angle05 = TMath::Tan( 5. * kDegRad);
+// Opening angle of the FA snout
+ const Float_t angle24 = TMath::Tan(24. * kDegRad);
+// Opneing angle of the inner cone
+ const Float_t angle71 = TMath::Tan(0.697 * kDegRad);
+// Starting position in z
+ const Float_t zFa = 90.0;
+
+// Pos 1
+///////////////////////////////////
+// FA Steel Envelope //
+// Drawing ALIP2A__0036 //
+///////////////////////////////////
+ // Thickness of the envelope
+ Float_t dSteelEnvelope = 1.5;
+ // Front cover
+ //
+ // Length
+ Float_t dzSteelEnvelopeFC = 4.00;
+ // Inner Radius
+ Float_t rInSteelEnvelopeFC1 = 35.90/2.;
+ Float_t rInSteelEnvelopeFC2 = rInSteelEnvelopeFC1 + dzSteelEnvelopeFC * angle10;
+ // Outer Radius
+ Float_t rOuSteelEnvelopeFC1 = 88.97/2.;
+ Float_t rOuSteelEnvelopeFC2 = rOuSteelEnvelopeFC1 + dzSteelEnvelopeFC * angle05;
+ //
+ // 5 deg cone
+ Float_t dzSteelEnvelopeC5 = 168.9;
+ Float_t rInSteelEnvelopeC5 = rOuSteelEnvelopeFC2 - dSteelEnvelope/TMath::Cos(5 * kDegRad);
+ Float_t rOuSteelEnvelopeC5 = rOuSteelEnvelopeFC2;
+ // 10 deg cone
+ Float_t dzSteelEnvelopeC10 = 227.1 - 4.;
+ Float_t rInSteelEnvelopeC10 = 116.22/2.;
+ Float_t rOuSteelEnvelopeC10 = rInSteelEnvelopeC10 + dSteelEnvelope/TMath::Cos(10 * kDegRad);
+ // Rear ring
+ Float_t dzSteelEnvelopeR = 4.;
+ Float_t rInSteelEnvelopeR2 = 196.3/2.;
+ Float_t rOuSteelEnvelopeR2 = 212.0/2.;
+ Float_t rInSteelEnvelopeR1 = rInSteelEnvelopeR2 - dzSteelEnvelopeR * angle10;
+ Float_t rOuSteelEnvelopeR1 = rInSteelEnvelopeR1 + dSteelEnvelope/TMath::Cos(10 * kDegRad);
+ // Front insert
+ Float_t dzSteelEnvelopeFI = 1.;
+ Float_t rInSteelEnvelopeFI = 42.0/2.;
+ Float_t rOuSteelEnvelopeFI = 85.0/2.;
+
+ TGeoPcon* shFaSteelEnvelopeC = new TGeoPcon(0., 360., 7);
+ z = 0.;
+ // Front cover
+ shFaSteelEnvelopeC->DefineSection( 0, z, rInSteelEnvelopeFC1, rOuSteelEnvelopeFC1);
+ z += dzSteelEnvelopeFC;
+ shFaSteelEnvelopeC->DefineSection( 1, z, rInSteelEnvelopeFC2, rOuSteelEnvelopeFC2);
+ // 5 deg cone
+ shFaSteelEnvelopeC->DefineSection( 2, z, rInSteelEnvelopeC5, rOuSteelEnvelopeC5);
+ z += dzSteelEnvelopeC5;
+ shFaSteelEnvelopeC->DefineSection( 3, z, rInSteelEnvelopeC10, rOuSteelEnvelopeC10);
+ // 10 deg cone
+ z += dzSteelEnvelopeC10;
+ shFaSteelEnvelopeC->DefineSection( 4, z, rInSteelEnvelopeR1, rOuSteelEnvelopeR1);
+ // Rear Ring
+ shFaSteelEnvelopeC->DefineSection( 5, z, rInSteelEnvelopeR1, rOuSteelEnvelopeR2);
+ z += dzSteelEnvelopeR;
+ shFaSteelEnvelopeC->DefineSection( 6, z, rInSteelEnvelopeR2, rOuSteelEnvelopeR2);
+
+ // Insert
+ shFaSteelEnvelopeC->SetName("steelEnvC");
+ TGeoTube* shFaSteelEnvelopeT = new TGeoTube(rInSteelEnvelopeFI, rOuSteelEnvelopeFI, dzSteelEnvelopeFI);
+ shFaSteelEnvelopeT->SetName("steelEnvT");
+ TGeoCompositeShape* shFaSteelEnvelope = new TGeoCompositeShape("shFaSteelEnvelope", "steelEnvC-steelEnvT");
+
+ TGeoVolume* voFaSteelEnvelope = new TGeoVolume("AFaSteelEnvelope", shFaSteelEnvelope, kMedSteel);
+
+// Pos 2
+///////////////////////////////////
+// FA End Plate //
+// Drawing ALIP2A__0037 //
+///////////////////////////////////
+//
+//
+//
+// Outer dimensions dx, dy, dz
+ Float_t dxEndPlate = 220.0;
+ Float_t dyEndPlate = 220.0;
+ Float_t dzEndPlate = 6.0;
+// Inner radius
+ Float_t rInEndPlate = 52.5/2.;
+// Insert
+ Float_t rInEndPlateI = 175.3/2.;
+ Float_t rOuEndPlateI = 212.2/2.;
+ Float_t dzEndPlateI = 2.0;
+
+
+ TGeoBBox* endPlate1 = new TGeoBBox(dxEndPlate/2., dyEndPlate/2., dzEndPlate/2.);
+ endPlate1->SetName("endPlate1");
+
+ TGeoTube* endPlate2 = new TGeoTube(0., rInEndPlate , (dzEndPlate + 0.1) / 2.) ;
+ endPlate2->SetName("endPlate2");
+ TGeoTube* endPlate3 = new TGeoTube(rInEndPlateI, rOuEndPlateI, (dzEndPlateI + 0.1)/2.);
+ endPlate3->SetName("endPlate3");
+
+ TGeoTranslation* tPlate = new TGeoTranslation("tPlate", 0., 0., -dzEndPlateI - 0.05);
+ tPlate->RegisterYourself();
+
+ TGeoCompositeShape* shFaEndPlate = new TGeoCompositeShape("shFaEndPlate", "endPlate1-(endPlate2+endPlate3:tPlate)");
+ TGeoVolume* voFaEndPlate = new TGeoVolume("AFaEndPlate", shFaEndPlate, kMedSteel);
+
+// Pos 3
+///////////////////////////////////
+// FA Flange //
+// Drawing ALIP2A__0038 //
+///////////////////////////////////
+ // Width of the Flange
+ Float_t dzFaFlange = 2.;
+ // Outer radius
+ Float_t rOuFaFlange = 41.0/2.;
+ // 1st section
+ Float_t dzFaFlange1 = 0.8;
+ Float_t rInFaFlange1 = 33.4/2.;
+ // 2nd section
+ Float_t dzFaFlange2 = 1.2;
+ Float_t rInFaFlange2 = 36.4/2.;
+
+ TGeoPcon* shFaFlange = new TGeoPcon(0., 360., 4);
+ z = 0;
+ shFaFlange->DefineSection(0, z, rInFaFlange1, rOuFaFlange);
+ z += dzFaFlange1;
+ shFaFlange->DefineSection(1, z, rInFaFlange1, rOuFaFlange);
+ shFaFlange->DefineSection(2, z, rInFaFlange2, rOuFaFlange);
+ z += dzFaFlange2;
+ shFaFlange->DefineSection(3, z, rInFaFlange2, rOuFaFlange);
+
+ TGeoVolume* voFaFlange = new TGeoVolume("AFaFlange", shFaFlange, kMedSteel);
+
+// Pos 4+5
+///////////////////////////////////
+// FA W Plate A+B //
+// Drawing ALIP2A__0043 //
+///////////////////////////////////
+ // Front Flange
+ Float_t dzFaWPlateF = 2.00;
+ Float_t rInFaQPlateF = 20.50;
+ Float_t rOuFaQPlateF = 40.05;
+ // 1st Central Part 24 deg
+ Float_t dzFaWPlateC1 = 7.95;
+ Float_t rInFaQPlateC1 = 16.35;
+ Float_t rOuFaQPlateC1 = rOuFaQPlateF + dzFaWPlateF * angle24;
+ // 2nd Central Part 5 deg
+ Float_t dzFaWPlateC2 = 1.05;
+ Float_t rInFaQPlateC2 = rInFaQPlateC1 + dzFaWPlateC1 * angle10;
+ Float_t rOuFaQPlateC2 = rOuFaQPlateC1 + dzFaWPlateC1 * angle24;
+ Float_t rInFaQPlateC3 = 17.94;
+ Float_t rOuFaQPlateC3 = 44.49;
+ // Rear Flange
+ Float_t dzFaWPlateR = 1.00;
+ Float_t rInFaQPlateR = 21.00;
+ Float_t rOuFaQPlateR = 42.55;
+ // Lenth of Plate - Rear Flange
+ Float_t dzFaWPlate = dzFaWPlateF + dzFaWPlateC1 + dzFaWPlateC2;
+
+ TGeoPcon* shFaWPlateA = new TGeoPcon(0., 360., 7);
+ z = 0.;
+ // Front Flange
+ shFaWPlateA->DefineSection(0, z, rInFaQPlateF, rOuFaQPlateF);
+ z += dzFaWPlateF;
+ shFaWPlateA->DefineSection(1, z, rInFaQPlateF, rOuFaQPlateC1);
+ // 24 deg cone
+ shFaWPlateA->DefineSection(2, z, rInFaQPlateC1, rOuFaQPlateC1);
+ z += dzFaWPlateC1;
+ shFaWPlateA->DefineSection(3, z, rInFaQPlateC2, rOuFaQPlateC2);
+ // 5 deg cone
+ z += dzFaWPlateC2;
+ shFaWPlateA->DefineSection(4, z, rInFaQPlateC3, rOuFaQPlateC3);
+ // Rear Flange
+ shFaWPlateA->DefineSection(5, z, rInFaQPlateR, rOuFaQPlateR);
+ z += dzFaWPlateR;
+ shFaWPlateA->DefineSection(6, z, rInFaQPlateR, rOuFaQPlateR);
+
+ TGeoVolume* voFaWPlateA = new TGeoVolume("AFaWPlateA", shFaWPlateA, kMedNiW);
+ // Inner region with higher transport cuts
+ TGeoPcon* shFaWPlateAI = new TGeoPcon(0., 360., 6);
+ z = 3.;
+ shFaWPlateAI->DefineSection(0, z, rInFaQPlateF + z * angle24, rInFaQPlateC1 + (z - dzFaWPlateF) * angle10);
+ for (Int_t i = 1; i < 5; i++) {
+ Float_t rmin = shFaWPlateA->GetRmin(i+2);
+ Float_t rmax = shFaWPlateA->GetRmax(i+2) - 3.;
+ Float_t z = shFaWPlateA->GetZ(i+2);
+ shFaWPlateAI->DefineSection(i, z, rmin, rmax);
+ }
+ TGeoVolume* voFaWPlateAI = new TGeoVolume("AFaWPlateAI", shFaWPlateAI, kMedNiWsh);
+ voFaWPlateA->AddNode(voFaWPlateAI, 1, vec0);
+
+//
+// Inner Tungsten Shield
+// Part 1 99.8 cm
+// Part 2 143.5 cm
+// Part 3 25.0 cm
+// Part 4 31.0 cm
+// ====================
+// 299.3 cm - 0.6 overlap between Part 1 and Part 2
+// 298.7 cm
+// Starting position 499.0 - 298.7 = 200.3
+// Within C cone: 200.3 - 92.0 = 108.3 = end of straight section of the Graphite Cone
+//
+
+// Pos 6
+///////////////////////////////////
+// FA Tungsten Tube Part 1 //
+// Drawing ALIP2A__0045 //
+///////////////////////////////////
+ //
+ // Inner radius
+ Float_t rInFaWTube1C1 = 9.1/2.;
+ // Central part
+ Float_t dzFaWTube1C = 98.8;
+ Float_t rOuFaWTube1C1 = 13.8/2.;
+ Float_t rOuFaWTube1C2 = 20.7/2.;
+ // Rear Flange
+ Float_t dzFaWTube1R = 1.0;
+ Float_t rOuFaWTube1R = 15.0/2.;
+ // Total length
+ Float_t dzFaWTube1 = dzFaWTube1C + dzFaWTube1R;
+
+ TGeoPcon* shFaWTube1 = new TGeoPcon(0., 360., 4);
+ z = 0.;
+ // Central Part
+ shFaWTube1->DefineSection(0, z, rInFaWTube1C1, rOuFaWTube1C1);
+ z += dzFaWTube1C;
+ shFaWTube1->DefineSection(1, z, rInFaWTube1C1, rOuFaWTube1C2);
+ // Rear Flange
+ shFaWTube1->DefineSection(2, z, rInFaWTube1C1, rOuFaWTube1R);
+ z += dzFaWTube1R;
+ shFaWTube1->DefineSection(3, z, rInFaWTube1C1, rOuFaWTube1R);
+
+ TGeoVolume* voFaWTube1 = new TGeoVolume("AFaWTube1", shFaWTube1, kMedNiWsh);
+
+// Pos 7
+///////////////////////////////////
+// FA Tungsten Tube Part 2 //
+// Drawing ALIP2A__0046 //
+///////////////////////////////////
+ //
+
+ // Central part
+ Float_t dzFaWTube2C = 142.9;
+ Float_t rInFaWTube2C1 = 9.10/2.;
+ Float_t rInFaWTube2C2 = 12.58/2.;
+ Float_t rOuFaWTube2C1 = 20.70/2.;
+ Float_t rOuFaWTube2C2 = 30.72/2.;
+ // Front Flange
+ Float_t dzFaWTube2F = 0.6;
+ Float_t rInFaWTube2F = 15.4/2.;
+ // Total length
+ Float_t dzFaWTube2 = dzFaWTube2C + dzFaWTube2F;
+
+ TGeoPcon* shFaWTube2 = new TGeoPcon(0., 360., 4);
+ z = 0.;
+ // Front Flange
+ shFaWTube2->DefineSection(0, z, rInFaWTube2F, rOuFaWTube2C1);
+ z += dzFaWTube2F;
+ shFaWTube2->DefineSection(1, z, rInFaWTube2F, rOuFaWTube2C1);
+ // Central part
+ shFaWTube2->DefineSection(2, z, rInFaWTube2C1, rOuFaWTube2C1);
+ z += dzFaWTube2C;
+ shFaWTube2->DefineSection(3, z, rInFaWTube2C2, rOuFaWTube2C2);
+
+ TGeoVolume* voFaWTube2 = new TGeoVolume("AFaWTube2", shFaWTube2, kMedNiWsh);
+
+// Pos 8
+///////////////////////////////////
+// FA Tungsten Tube Part 3 //
+// Drawing ALIP2A__0047 //
+///////////////////////////////////
+ Float_t dzFaWTube3 = 25.0;
+ Float_t rInFaWTube3C1 = 12.59/2.;
+ Float_t rInFaWTube3C2 = 13.23/2.;
+ Float_t rOuFaWTube3C1 = 30.60/2.;
+ Float_t rOuFaWTube3C2 = 32.35/2.;
+ TGeoVolume* voFaWTube3 = new TGeoVolume("AFaWTube3",
+ new TGeoCone(dzFaWTube3/2., rInFaWTube3C1, rOuFaWTube3C1, rInFaWTube3C2, rOuFaWTube3C2),
+ kMedNiWsh);
+
+// Pos 9
+///////////////////////////////////
+// FA Tungsten Tube Part 4 //
+// Drawing ALIP2A__0048 //
+///////////////////////////////////
+ Float_t dzFaWTube4 = 31.0;
+ Float_t rInFaWTube4C1 = 13.23/2.;
+ Float_t rInFaWTube4C2 = 13.98/2.;
+ Float_t rOuFaWTube4C1 = 48.80/2.;
+ Float_t rOuFaWTube4C2 = 52.05/2.;
+ TGeoVolume* voFaWTube4 = new TGeoVolume("AFaWTube4",
+ new TGeoCone(dzFaWTube4/2., rInFaWTube4C1, rOuFaWTube4C1, rInFaWTube4C2, rOuFaWTube4C2),
+ kMedNiWsh);
+
+// Pos 10
+//
+// This section has been moved to AliSHILv3
+
+//
+// Pos 11
+///////////////////////////////////
+// FA Graphite Cone //
+// Drawing ALIP2_0002 //
+///////////////////////////////////
+//
+ // Total length
+ Float_t dzFaGraphiteCone = 225.0;
+ // Straight section = start of the 2deg inner cone
+ Float_t dzFaGraphiteConeS = 108.3;
+ // Inner radius at the front
+ Float_t rInFaGraphiteCone1 = 4.5;
+ // Outer radius at the front
+ Float_t rOuFaGraphiteCone1 = (zFa + dzFaFlange) * angle10;
+ // Inner radius at start of inner opening cone
+ Float_t rInFaGraphiteCone2 = 7.0;
+ // Outer radius at start of inner opening cone
+ Float_t rOuFaGraphiteCone2 = (zFa + dzFaFlange + dzFaGraphiteConeS) * angle10;
+ // Inner radius the rear
+ Float_t rInFaGraphiteCone3 = 11.0;
+ // Ouer radius at the rear
+ Float_t rOuFaGraphiteCone3 = (zFa + dzFaFlange + dzFaGraphiteCone) * angle10;
+
+ TGeoPcon* shFaGraphiteCone = new TGeoPcon(0., 360., 4);
+
+ z = 0;
+ // Straight section
+ shFaGraphiteCone->DefineSection(0, z, rInFaGraphiteCone1, rOuFaGraphiteCone1);
+ z += dzFaGraphiteConeS;
+ shFaGraphiteCone->DefineSection(1, z, rInFaGraphiteCone1, rOuFaGraphiteCone2);
+ // 2 deg opening cone
+ shFaGraphiteCone->DefineSection(2, z, rInFaGraphiteCone2, rOuFaGraphiteCone2);
+ z = dzFaGraphiteCone;
+ shFaGraphiteCone->DefineSection(3, z, rInFaGraphiteCone3, rOuFaGraphiteCone3);
+
+ TGeoVolume* voFaGraphiteCone = new TGeoVolume("AFaGraphiteCone", shFaGraphiteCone, kMedCsh);
+ //
+ // Outer region with lower transport cuts
+ dz = 40.;
+ TGeoCone* shFaGraphiteConeO = new TGeoCone(dz/2.,
+ rInFaGraphiteCone1, rOuFaGraphiteCone1,
+ rInFaGraphiteCone1, rOuFaGraphiteCone1 + dz * angle10);
+
+ TGeoVolume* voFaGraphiteConeO = new TGeoVolume("AFaGraphiteConeO", shFaGraphiteConeO, kMedC);
+ voFaGraphiteCone->AddNode(voFaGraphiteConeO, 1, new TGeoTranslation(0., 0., dz/2.));
+
+// Pos 12
+///////////////////////////////////
+// FA Lead Cone //
+// Drawing ALIP2A__0077 //
+///////////////////////////////////
+ // 5 deg cone
+ Float_t dzFaPbCone5 = 168.9;
+ Float_t rInFaPbCone5 = 37.35/2.;
+ Float_t rOuFaPbCone5 = 85.66/2.;
+ // 10 deg cone
+ Float_t dzFaPbCone10 = 25.9;
+ Float_t rInFaPbCone10 = rInFaPbCone5 + dzFaPbCone5 * angle10;
+ Float_t rOuFaPbCone10 = 115.2/2.;
+ // end
+ Float_t rInFaPbConeE = 106.05/2.;
+ Float_t rOuFaPbConeE = 124.35/2.;
+ // Total length
+ Float_t dzFaPbCone = dzFaPbCone5 + dzFaPbCone10;
+
+ TGeoPcon* shFaPbCone = new TGeoPcon(0., 360., 3);
+ z = 0.;
+ // 5 deg cone
+ shFaPbCone->DefineSection(0, z, rInFaPbCone5, rOuFaPbCone5);
+ z += dzFaPbCone5;
+ // 10 deg cone
+ shFaPbCone->DefineSection(1, z, rInFaPbCone10, rOuFaPbCone10);
+ z += dzFaPbCone10;
+ shFaPbCone->DefineSection(2, z, rInFaPbConeE, rOuFaPbConeE);
+
+ TGeoVolume* voFaPbCone = new TGeoVolume("AFaPbCone", shFaPbCone, kMedPb);
+ //
+ // Inner region with higher transport cuts
+ TGeoPcon* shFaPbConeI = MakeShapeFromTemplate(shFaPbCone, 0., -3.);
+ TGeoVolume* voFaPbConeI = new TGeoVolume("AFaPbConeI", shFaPbConeI, kMedPbSh);
+ voFaPbCone->AddNode(voFaPbConeI, 1, vec0);
+
+
+// Pos 13
+///////////////////////////////////
+// FA Concrete Cone //
+// Drawing ALIP2A__00xx //
+///////////////////////////////////
+ Float_t dzFaConcreteCone = 126.;
+ Float_t rOuFaConcreteCone1 = rOuFaGraphiteCone3;
+ Float_t rInFaConcreteCone1 = 11.;
+ Float_t rOuFaConcreteCone2 = rOuFaConcreteCone1 + dzFaConcreteCone * angle10;
+ Float_t rInFaConcreteCone2 = rInFaConcreteCone1 + dzFaConcreteCone * angle02;
+
+ TGeoVolume* voFaConcreteCone = new TGeoVolume("AFaConcreteCone",
+ new TGeoCone(dzFaConcreteCone/2.,
+ rInFaConcreteCone1, rOuFaConcreteCone1,
+ rInFaConcreteCone2, rOuFaConcreteCone2),
+ kMedConc);
+
+// Pos 14
+///////////////////////////////////
+// FA Polyethylene Parts //
+// Drawing ALIP2A__0034 //
+///////////////////////////////////
+ Float_t dzFaCH2Cone = 201.;
+ Float_t rInFaCH2Cone1 = 106.0/2.;
+ Float_t rInFaCH2Cone2 = 176.9/2.;
+ Float_t dFaCH2Cone = 7.5 / TMath::Cos(10. * kDegRad);
+
+ TGeoVolume* voFaCH2Cone = new TGeoVolume("AFaCH2Cone",
+ new TGeoCone(dzFaCH2Cone/2.,
+ rInFaCH2Cone1, rInFaCH2Cone1 + dFaCH2Cone,
+ rInFaCH2Cone2, rInFaCH2Cone2 + dFaCH2Cone),
+ kMedCH2);
+
+
+// Pos 15
+///////////////////////////////////
+// FA Steel Plate 250 mm //
+// Drawing ALIP2A__00xx //
+///////////////////////////////////
+ Float_t dzFaSteelCone25 = 25.;
+ Float_t rInFaSteelCone25A = rInFaConcreteCone2;
+ Float_t rOuFaSteelCone25A = rOuFaConcreteCone2;
+ Float_t rInFaSteelCone25B = rInFaSteelCone25A + dzFaSteelCone25 * angle02;
+ Float_t rOuFaSteelCone25B = rOuFaSteelCone25A + dzFaSteelCone25 * angle10;
+
+ TGeoVolume* voFaSteelCone25 = new TGeoVolume("AFaSteelCone25",
+ new TGeoCone(dzFaSteelCone25/2.,
+ rInFaSteelCone25A, rOuFaSteelCone25A,
+ rInFaSteelCone25B, rOuFaSteelCone25B),
+ kMedSteelSh);
+
+// Pos 16
+///////////////////////////////////
+// FA Steel Plate 310 mm //
+// Drawing ALIP2A__00xx //
+///////////////////////////////////
+ Float_t dzFaSteelCone31 = 31.;
+ Float_t rInFaSteelCone31A = rOuFaWTube4C1;;
+ Float_t rOuFaSteelCone31A = rOuFaSteelCone25B;
+ Float_t rInFaSteelCone31B = rOuFaWTube4C2;
+ Float_t rOuFaSteelCone31B = rOuFaSteelCone31A + dzFaSteelCone31 * angle10;
+
+ TGeoVolume* voFaSteelCone31 = new TGeoVolume("AFaSteelCone31",
+ new TGeoCone(dzFaSteelCone31/2.,
+ rInFaSteelCone31A, rOuFaSteelCone31A,
+ rInFaSteelCone31B, rOuFaSteelCone31B),
+ kMedSteelSh);
+ // Inner Region with higher transport cuts
+ dz = 5.;
+ TGeoVolume* voFaSteelCone31I = new TGeoVolume("AFaSteelCone31I",
+ new TGeoCone(dz/2.,
+ rInFaSteelCone31B - dz * angle03,
+ rOuFaSteelCone31B - dz * angle10,
+ rInFaSteelCone31B, rOuFaSteelCone31B),
+ kMedSteel);
+
+ voFaSteelCone31->AddNode(voFaSteelCone31I, 1, new TGeoTranslation(0., 0., dzFaSteelCone31/2. - dz/2.));
+
+
+///////////////////////////////////
+// FA Composite Ring //
+// Drawing ALIP2A__0126 //
+///////////////////////////////////
+ // 1st section
+ Float_t dzFaCompRing1 = 0.8;
+ Float_t rInFaCompRing1 = 11.0/2.;
+ Float_t rOuFaCompRing1 = 32.4/2.;
+ // 2nd section
+ Float_t dzFaCompRing2 = 1.2;
+ Float_t rInFaCompRing2 = 14.0/2.;
+ Float_t rOuFaCompRing2 = 34.3/2.;
+
+ TGeoPcon* shFaCompRing = new TGeoPcon(0., 360., 4);
+ z = 0.;
+ // 1st section
+ shFaCompRing->DefineSection(0, z, rInFaCompRing1, rOuFaCompRing1);
+ z += dzFaCompRing1;
+ shFaCompRing->DefineSection(1, z, rInFaCompRing1, rOuFaCompRing1);
+ // 2nd section
+ shFaCompRing->DefineSection(2, z, rInFaCompRing2, rOuFaCompRing2);;
+ z += dzFaCompRing2;
+ shFaCompRing->DefineSection(3, z, rInFaCompRing2, rOuFaCompRing2);
+
+ TGeoVolume* voFaCompRing = new TGeoVolume("AFaCompRing", shFaCompRing, kMedC);
+
+///////////////////////////////////
+// FA Magnesium Ring //
+// Drawing ALIP2A__0127 //
+///////////////////////////////////
+ //
+ // The inner radii
+ // section 1+3
+ Float_t dzFaMgRingO = 0.7;
+ Float_t rInFaMgRingO = 3.0;
+ // section 2
+ Float_t dzFaMgRingI = 0.6;
+ Float_t rInFaMgRingI = 3.5;
+
+ TGeoPcon* shFaMgRing = new TGeoPcon(0., 360., 8);
+ // 1st section
+ z = 0.;
+ shFaMgRing->DefineSection(0, z, rInFaMgRingO, rInFaCompRing1);
+ z += dzFaMgRingO;
+ shFaMgRing->DefineSection(1, z, rInFaMgRingO, rInFaCompRing1);
+ // 2nd section
+ shFaMgRing->DefineSection(2, z, rInFaMgRingI, rInFaCompRing1);
+ z += dzFaMgRingI/2.;
+ shFaMgRing->DefineSection(3, z, rInFaMgRingI, rInFaCompRing1);
+ // 3rd section
+ shFaMgRing->DefineSection(4, z, rInFaMgRingI, rInFaCompRing2);
+ z += dzFaMgRingI/2.;
+ shFaMgRing->DefineSection(5, z, rInFaMgRingI, rInFaCompRing2);
+ // 4th section
+ shFaMgRing->DefineSection(6, z, rInFaMgRingO, rInFaCompRing2);
+ z += dzFaMgRingO;
+ shFaMgRing->DefineSection(7, z, rInFaMgRingO, rInFaCompRing2);
+
+ TGeoVolume* voFaMgRing = new TGeoVolume("AFaMgRing", shFaMgRing, kMedNiW);
+
+
+//
+// Absorber mother volume
+//
+//
+// Length of the absorber without endplate
+ Float_t dzFa = dzFaFlange + dzFaGraphiteCone + dzFaConcreteCone + dzFaSteelCone25 + dzFaSteelCone31;
+ TGeoPcon* shFaM = new TGeoPcon(0., 360., 16);
+ // Front -> Flange (Mg Ring details)
+ z = 0.;
+ shFaM->DefineSection( 0, z, rInFaMgRingO, rOuFaQPlateF);
+ z += dzFaMgRingO;
+ dz = dzFaMgRingO;
+ shFaM->DefineSection( 1, z, rInFaMgRingO, rOuFaQPlateF + dz * angle24);
+ shFaM->DefineSection( 2, z, rInFaMgRingI, rOuFaQPlateF + dz * angle24);
+ z += dzFaMgRingI;
+ dz += dzFaMgRingI;
+ shFaM->DefineSection( 3, z, rInFaMgRingI, rOuFaQPlateF + dz * angle24);
+ shFaM->DefineSection( 4, z, rInFaMgRingO, rOuFaQPlateF + dz * angle24);
+ z += dzFaMgRingO;
+ dz += dzFaMgRingO;
+ shFaM->DefineSection( 5, z, rInFaMgRingO, rOuFaQPlateF + dz * angle24);
+ shFaM->DefineSection( 6, z, rInFaGraphiteCone1, rOuFaQPlateF + dz * angle24);
+ // Flange -> W-Plate B
+ z += dzFaWPlateC1;
+ shFaM->DefineSection( 7, z, rInFaGraphiteCone1, rOuFaQPlateC2);
+ z += dzFaWPlateC2;
+ Float_t zFaSteelEnvelope = z;
+ shFaM->DefineSection( 8, z, rInFaGraphiteCone1, rOuFaQPlateC3);
+ // 5 deg cone -> 10 deg cone
+ z = zFaSteelEnvelope + dzSteelEnvelopeFC + dzSteelEnvelopeC5;
+ shFaM->DefineSection( 9, z, rInFaGraphiteCone1, rOuSteelEnvelopeC10);
+ // 10 deg cone up to end of straight section
+ z0 = z;
+ z = dzFaFlange + dzFaGraphiteConeS + dzFaWTube1C;
+ dz = z - z0;
+ shFaM->DefineSection(10, z, rInFaGraphiteCone1, rOuSteelEnvelopeC10 + dz * angle10);
+ // 0.7 deg inner opening cone up to outer rear ring
+ z0 = z;
+ z = dzFa - dzSteelEnvelopeR/2.;
+ dz = (z - z0);
+ shFaM->DefineSection(11, z, rInFaGraphiteCone1 +dz * angle71, rOuSteelEnvelopeR1);
+ shFaM->DefineSection(12, z, rInFaGraphiteCone1 +dz * angle71, rOuSteelEnvelopeR2);
+ z += dzSteelEnvelopeR/2.;
+ shFaM->DefineSection(13, z, rInFaWTube4C2, rOuSteelEnvelopeR2);
+ // Recess for end plate
+ dz = dzSteelEnvelopeR/2;
+ shFaM->DefineSection(14, z, rInFaCH2Cone2 - dz * angle10, rOuSteelEnvelopeR2);
+ z += dzSteelEnvelopeR/2.;
+ shFaM->DefineSection(15, z, rInFaCH2Cone2, rOuSteelEnvelopeR2);
+
+ TGeoVolume* voFaM = new TGeoVolume("AFaM", shFaM, kMedAir);
+
+
+//
+// Assemble volumes inside acceptance
+ TGeoPcon* shFaAccM = new TGeoPcon(0., 360., 7);
+ for (Int_t i = 0; i < 4; i++) {
+ Float_t z = shFaGraphiteCone->GetZ(i);
+ Float_t rmin = shFaGraphiteCone->GetRmin(i);
+ Float_t rmax = shFaGraphiteCone->GetRmax(i);
+ shFaAccM->DefineSection(i, z, rmin, rmax);
+ }
+ z = dzFaGraphiteCone + dzFaConcreteCone + dzFaSteelCone25;
+ z0 = z + zFa + dzFaFlange;
+ shFaAccM->DefineSection(4, z, rOuFaWTube3C2, z0 * angle10);
+ shFaAccM->DefineSection(5, z, rOuFaWTube4C1, z0 * angle10);
+ z += dzFaSteelCone31;
+ z0 += dzFaSteelCone31;
+ shFaAccM->DefineSection(6, z, rOuFaWTube4C2, z0 * angle10);
+ TGeoVolume* voFaAccM = new TGeoVolume("AFaAcc", shFaAccM, kMedAir);
+
+ z = 0;
+ voFaAccM->AddNode(voFaGraphiteCone, 1, vec0);
+ z += dzFaGraphiteCone;
+ voFaAccM->AddNode(voFaConcreteCone, 1, new TGeoTranslation(0., 0., z + dzFaConcreteCone / 2.));
+ z += dzFaConcreteCone;
+ voFaAccM->AddNode(voFaSteelCone25, 1, new TGeoTranslation(0., 0., z + dzFaSteelCone25 / 2. + 0.001));
+ z += dzFaSteelCone25;
+ voFaAccM->AddNode(voFaSteelCone31, 1, new TGeoTranslation(0., 0., z + dzFaSteelCone31 / 2. + 0.001));
+
+//
+// Inner shield
+ TGeoVolumeAssembly* voFaInnerShield = new TGeoVolumeAssembly("AFaInnerShield");
+ voFaInnerShield->AddNode(voFaWTube1, 1, vec0);
+ z = dzFaWTube1 - 0.6;
+ voFaInnerShield->AddNode(voFaWTube2, 1, new TGeoTranslation(0., 0., z) );
+ z += dzFaWTube2;
+ voFaInnerShield->AddNode(voFaWTube3, 1, new TGeoTranslation(0., 0., z + dzFaWTube3 / 2.) );
+ z += dzFaWTube3;
+ voFaInnerShield->AddNode(voFaWTube4, 1, new TGeoTranslation(0., 0., z + dzFaWTube4 / 2.) );
+ z = dzFaGraphiteConeS + dzFaFlange;
+ voFaM->AddNode(voFaInnerShield, 1, new TGeoTranslation(0., 0., z));
+
+
+//
+// Adding volumes to mother volume
+//
+ z = 0.;
+ voFaM->AddNode(voFaWPlateA, 1, vec0);
+ z += dzFaWPlate;
+ voFaM->AddNode(voFaSteelEnvelope, 1, new TGeoTranslation(0., 0., z));
+ z += dzSteelEnvelopeFC;
+ voFaM->AddNode(voFaPbCone, 1, new TGeoTranslation(0., 0., z));
+ z += (dzFaPbCone + dzFaCH2Cone / 2.);
+ voFaM->AddNode(voFaCH2Cone, 1, new TGeoTranslation(0., 0., z));
+ voFaM->AddNode(voFaFlange, 1, vec0);
+ voFaM->AddNode(voFaMgRing, 1, vec0);
+ voFaM->AddNode(voFaCompRing, 1, vec0);
+ voFaM->AddNode(voFaAccM, 1, new TGeoTranslation(0., 0., dzFaFlange));
+
+////////////////////////////////////////////////////
+// //
+// Front Absorber Support Structure FASS //
+// //
+// Drawing ALIP2A__0035 //
+// Drawing ALIP2A__0089 //
+// Drawing ALIP2A__0090 //
+// Drawing ALIP2A__0109 //
+////////////////////////////////////////////////////
+ TGeoVolumeAssembly* voFass = new TGeoVolumeAssembly("AFass");
+ const Float_t kFassUBFlangeH = 380.;
+ const Float_t kFassUBFlangeW = 77.;
+
+ const Float_t kFassUMFlangeH = 380.;
+ const Float_t kFassUMFlangeB = 246.;
+ const Float_t kFassUMFlangeT = 10.;
+ const Float_t kFassUMFalpha = - TMath::ATan((kFassUMFlangeB-kFassUMFlangeT)/ kFassUMFlangeH / 2.) / kDegRad;
+// Upper back flange
+// B1
+// 380 x 77
+ TGeoVolume* voFassUBFlange = new TGeoVolume("AFassUBFlange", new TGeoBBox(kFassUBFlangeW/2.,
+ kFassUBFlangeH/2., 3./2.), kMedSteel);
+ voFass->AddNode(voFassUBFlange, 1, new TGeoTranslation(+1.5 + kFassUBFlangeW/2.,
+ 180. + kFassUBFlangeH/2.,
+ kFassUMFlangeB - 1.5));
+ voFass->AddNode(voFassUBFlange, 2, new TGeoTranslation(-1.5 - kFassUBFlangeW/2.,
+ 180. + kFassUBFlangeH/2.,
+ kFassUMFlangeB - 1.5));
+
+
+// Lower back flange
+// Upper median flange
+// Drawing ALIP2A__0090 //
+// Drawing ALIP2A__0089 //
+// A2
+
+ TGeoVolume* voFassUMFlange = new TGeoVolume("AFassUMFlange",
+ new TGeoTrap(kFassUMFlangeH/2., kFassUMFalpha,
+ 0., 1.5,
+ kFassUMFlangeB/2., kFassUMFlangeB/2.,
+ 0., 1.5,
+ kFassUMFlangeT/2., kFassUMFlangeT/2.,
+ 0.), kMedSteel);
+
+ TGeoRotation* rotFass1 = new TGeoRotation("rotFass1", 180., 0., 90., 0., 90., 90.);
+ voFass->AddNode(voFassUMFlange,1 ,
+ new TGeoCombiTrans(0., 180. + kFassUMFlangeH/2., -(kFassUMFlangeB+kFassUMFlangeT)/4. + kFassUMFlangeB,
+ rotFass1));
+
+
+// Lower median flange
+// Drawing ALIP2A__0090 //
+// Drawing ALIP2A__0089 //
+// A1
+ const Float_t kFassLMFlangeH = 242.;
+ const Float_t kFassLMFlangeB = 246.;
+ const Float_t kFassLMFlangeT = 43.;
+ const Float_t kFassLMFalpha = - TMath::ATan((kFassLMFlangeB-kFassLMFlangeT)/ kFassLMFlangeH / 2.) / kDegRad;
+ TGeoVolume* voFassLMFlange = new TGeoVolume("AFassLMFlange",
+ new TGeoTrap(kFassLMFlangeH/2., kFassLMFalpha,
+ 0., 1.5,
+ kFassLMFlangeB/2., kFassLMFlangeB/2.,
+ 0., 1.5,
+ kFassLMFlangeT/2., kFassLMFlangeT/2.,
+ 0.), kMedSteel);
+ TGeoRotation* rotFass2 = new TGeoRotation("rotFass2", 180., 0., 90., 0., 90., 270.);
+ voFass->AddNode(voFassLMFlange, 1,
+ new TGeoCombiTrans(0., -180. - kFassLMFlangeH/2., -(kFassLMFlangeB+kFassLMFlangeT)/4. + kFassLMFlangeB,
+ rotFass2));
+
+// Stiffeners
+// Support Plate
+//
+// Central cone
+ TGeoPgon* shFassCone = new TGeoPgon(22.5, 360., 8, 4);
+ shFassCone->DefineSection(0, 0., 0., 180.);
+ shFassCone->DefineSection(1, 3., 0., 180.);
+ shFassCone->DefineSection(2, 3., 177., 180.);
+ shFassCone->DefineSection(3, 246., 177., 180.);
+ shFassCone->SetName("FassCone");
+
+ TGeoBBox* shFassWindow = new TGeoBBox( 190., 53., 28.);
+ shFassWindow->SetName("FassWindow");
+ TGeoTranslation* tFassWindow = new TGeoTranslation("tFassWindow", 0., 0., 78.);
+ tFassWindow->RegisterYourself();
+
+ TGeoTube* shFassApperture = new TGeoTube(0., 104., 3.);
+ shFassApperture->SetName("FassApperture");
+
+ TGeoCompositeShape* shFassCentral =
+ new TGeoCompositeShape("shFassCentral", "FassCone-(FassWindow:tFassWindow+FassApperture)");
+
+ TGeoVolume* voFassCentral = new TGeoVolume("AFassCentral", shFassCentral, kMedSteel);
+ voFass->AddNode(voFassCentral, 1, vec0);
+
+//
+// Aluminum ring
+//
+ TGeoVolume* voFassAlRing = new TGeoVolume("AFassAlRing", new TGeoTube(104., 180., 10.), kMedAlu);
+
+
+//
+// Assemble the FA
+//
+// Inside muon spectrometer acceptance
+//
+// Composite 2 cm
+// Graphite 225 cm
+// Concrete 126 cm
+// Steel 56 cm
+// ===================
+// 409 cm
+// should be 409 cm
+
+
+
+
+//
+// Absorber and Support
+ TGeoVolumeAssembly* voFA = new TGeoVolumeAssembly("AFA");
+ voFA->AddNode(voFaM, 1, vec0);
+ voFA->AddNode(voFaEndPlate, 1, new TGeoTranslation(0., 0., dzFa + dzEndPlate/2.));
+ voFA->AddNode(voFass, 1, new TGeoTranslation(0., 0., 388.45));
+ voFA->AddNode(voFassAlRing, 1, new TGeoTranslation(0., 0., 382. - 0.55));
+ top->AddNode(voFA, 1, new TGeoCombiTrans(0., 0., -90., rotxz));
+}
+
+
+TGeoPcon* AliABSOv3::MakeShapeFromTemplate(TGeoPcon* pcon, Float_t drMin, Float_t drMax)
+{
+ //
+ // Returns new shape based on a template changing
+ // the inner radii by drMin and the outer radii by drMax.
+ //
+ Int_t nz = pcon->GetNz();
+ TGeoPcon* cpcon = new TGeoPcon(0., 360., nz);
+ for (Int_t i = 0; i < nz; i++)
+ cpcon->DefineSection(i, pcon->GetZ(i), pcon->GetRmin(i) + drMin, pcon->GetRmax(i) + drMax);
+ return cpcon;
+}