--- /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. *
+ **************************************************************************/
+
+// $Id$
+//
+// Class AliMUONSt2GeometryBuilderV2
+// -------------------------------
+// MUON Station2 coarse geometry construction class.
+// Extracted from AliMUONv1
+
+
+#include <TVirtualMC.h>
+#include <TGeoMatrix.h>
+
+#include "AliLog.h"
+
+#include "AliMUONSt2GeometryBuilderV2.h"
+#include "AliMUON.h"
+#include "AliMUONChamber.h"
+#include "AliMUONGeometryModule.h"
+#include "AliMUONGeometryEnvelopeStore.h"
+
+ClassImp(AliMUONSt2GeometryBuilderV2)
+
+//______________________________________________________________________________
+AliMUONSt2GeometryBuilderV2::AliMUONSt2GeometryBuilderV2(AliMUON* muon)
+ : AliMUONVGeometryBuilder("st2.dat",
+ muon->Chamber(2).GetGeometry(),
+ muon->Chamber(3).GetGeometry()),
+ fMUON(muon)
+{
+// Standard constructor
+
+}
+
+//______________________________________________________________________________
+AliMUONSt2GeometryBuilderV2::AliMUONSt2GeometryBuilderV2()
+ : AliMUONVGeometryBuilder(),
+ fMUON(0)
+{
+// Default constructor
+}
+
+
+//______________________________________________________________________________
+AliMUONSt2GeometryBuilderV2::AliMUONSt2GeometryBuilderV2(const AliMUONSt2GeometryBuilderV2& rhs)
+ : AliMUONVGeometryBuilder(rhs)
+{
+// Protected copy constructor
+
+ AliFatal("Copy constructor is not implemented.");
+}
+
+//______________________________________________________________________________
+AliMUONSt2GeometryBuilderV2::~AliMUONSt2GeometryBuilderV2() {
+//
+}
+
+//______________________________________________________________________________
+AliMUONSt2GeometryBuilderV2&
+AliMUONSt2GeometryBuilderV2::operator = (const AliMUONSt2GeometryBuilderV2& rhs)
+{
+// Protected assignement operator
+
+ // check assignement to self
+ if (this == &rhs) return *this;
+
+ AliFatal("Assignment operator is not implemented.");
+
+ return *this;
+}
+
+//
+// public methods
+//
+
+//______________________________________________________________________________
+void AliMUONSt2GeometryBuilderV2::CreateGeometry()
+{
+// From AliMUONv1::CreateGeometry()
+
+//
+//********************************************************************
+// Station 2 **
+//********************************************************************
+ // indices 1 and 2 for first and second chambers in the station
+ // iChamber (first chamber) kept for other quanties than Z,
+ // assumed to be the same in both chambers
+
+ // Get tracking medias Ids
+ Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
+ Int_t idAir= idtmed[1100]; // medium 1
+ // Int_t idAlu1=idtmed[1103]; // medium 4
+ // Int_t idAlu2=idtmed[1104]; // medium 5
+ Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%)
+
+ const Float_t kDeltaQuad = 2.6;
+ const Float_t kDeltaZ = 6.5/2.;
+
+ // Rotation matrices in the x-y plane
+ // phi= 0 deg
+ Int_t irot1;
+ fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.);
+ // phi= 90 deg
+ Int_t irot2;
+ fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.);
+
+ AliMUONChamber* iChamber = &fMUON->Chamber(2);
+ // AliMUONChamber* iChamber1 = iChamber;
+ // AliMUONChamber* iChamber2 = &fMUON->Chamber(3);
+
+ // Half of the total thickness of frame crosses (including DAlu)
+ // for each chamber in stations 1 and 2:
+ // 3% of X0 of composite material,
+ // but taken as Aluminium here, with same thickness in number of X0
+ // Float_t dframez = 3. * 8.9 / 100;
+ // DGas and DAlu not changed from standard values
+ // Double_t zfpos=-(iChamber->DGas()+dframez+iChamber->DAlu())/2;
+ // The same parameters are defined in builder for station 1
+
+ // Mother volume
+ // Outer excess and inner recess for mother volume radius
+ // with respect to ROuter and RInner
+ // Float_t dframep=.001; // Value for station 3 should be 6 ...
+ // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm)
+ // Float_t dframep1=.001;
+ // Float_t phi=2*TMath::Pi()/12/2;
+ // The same parameters are defined in builder for station 1 (30deg)
+
+ Float_t tpar[5];
+ // Double_t dstation = (-iChamber2->Z()) - (-iChamber1->Z());
+
+
+ Float_t posx, posy, posz;
+// Chamber Material represented by Alu sheet
+ tpar[0]= iChamber->RInner();
+ tpar[1]= iChamber->ROuter();
+ tpar[2] = (iChamber->DGas())/2;
+ tpar[3] = 0.;
+ tpar[4] = 90.;
+
+//
+// Sensitive volumes
+ gMC->Gsvolu("S03G", "TUBS", idGas, tpar, 5);
+ gMC->Gsvolu("S04G", "TUBS", idGas, tpar, 5);
+
+ Int_t detElemId;
+
+ posx = kDeltaQuad;
+ posy = kDeltaQuad;
+ posz = kDeltaZ;
+
+ detElemId = 300;
+ gMC->Gsvolu("LE01", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(2)->AddEnvelope("LE01", detElemId, true, TGeoTranslation(posx, posy, posz),
+ TGeoRotation("rot1",90,0,90,90,0,0) );
+ detElemId = 400;
+ gMC->Gsvolu("LF01", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(3)->AddEnvelope("LF01", detElemId, true, TGeoTranslation(posx, posy, posz),
+ TGeoRotation("rot1",90,0,90,90,0,0) );
+ detElemId = 351;
+ gMC->Gsvolu("LE02", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(2)->AddEnvelope("LE02", detElemId, true, TGeoTranslation(-posx, posy,-posz),
+ TGeoRotation("rot2",90,180,90,90,180,0) );
+ detElemId = 451;
+ gMC->Gsvolu("LF02", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(3)->AddEnvelope("LF02", detElemId, true, TGeoTranslation(-posx, posy,-posz),
+ TGeoRotation("rot2",90,180,90,90,180,0) );
+ detElemId = 301;
+ gMC->Gsvolu("LE03", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(2)->AddEnvelope("LE03", detElemId, true, TGeoTranslation(posx, -posy, -posz),
+ TGeoRotation("rot3",90,0,90,270,180,0) );
+ detElemId = 401;
+ gMC->Gsvolu("LF03", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(3)->AddEnvelope("LF03", detElemId, true, TGeoTranslation(posx, -posy, -posz),
+ TGeoRotation("rot3",90,0,90,270,180,0) );
+ detElemId = 350;
+ gMC->Gsvolu("LE04", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(2)->AddEnvelope("LE04", detElemId, true, TGeoTranslation(-posx, -posy, posz),
+ TGeoRotation("rot4",90,180,90,270,0,0) );
+ detElemId = 450;
+ gMC->Gsvolu("LF04", "TUBS", idAir, tpar, 5);
+ GetEnvelopes(3)->AddEnvelope("LF04", detElemId, true, TGeoTranslation(-posx, -posy, posz),
+ TGeoRotation("rot4",90,180,90,270,0,0) );
+
+ GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE01", 1);
+ GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF01", 1);
+
+ GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE02", 2);
+ GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF02", 2);
+
+ GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE03", 3);
+ GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF03", 3);
+
+ GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE04", 4);
+ GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF04", 4);
+
+}
+
+//______________________________________________________________________________
+void AliMUONSt2GeometryBuilderV2::SetTransformations()
+{
+// Defines the transformations for the station2 chambers.
+// ---
+
+ AliMUONChamber* iChamber1 = &fMUON->Chamber(2);
+ Double_t zpos1 = - iChamber1->Z();
+ iChamber1->GetGeometry()
+ ->SetTranslation(TGeoTranslation(0., 0., zpos1));
+
+ AliMUONChamber* iChamber2 = &fMUON->Chamber(3);
+ Double_t zpos2 = - iChamber2->Z();
+ iChamber2->GetGeometry()
+ ->SetTranslation(TGeoTranslation(0., 0., zpos2));
+}
+
+//______________________________________________________________________________
+void AliMUONSt2GeometryBuilderV2::SetSensitiveVolumes()
+{
+// Defines the sensitive volumes for station2 chambers.
+// ---
+
+ GetGeometry(2)->SetSensitiveVolume("S03G");
+ GetGeometry(3)->SetSensitiveVolume("S04G");
+}