--- /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. *
+ **************************************************************************/
+
+
+
+//////////////////////////////////////////////////////////////////////
+// //
+// (V-zero) detector version 0 as designed by the Lyon group //
+// All comments should be sent to Brigitte CHEYNIS : //
+// b.cheynis@ipnl.in2p3.fr //
+// //
+//////////////////////////////////////////////////////////////////////
+
+#include <TMath.h>
+#include <TGeometry.h>
+#include <TTRD2.h>
+#include <TCONE.h>
+#include <TPGON.h>
+#include <TPCON.h>
+#include <TSPHE.h>
+#include <TTRAP.h>
+#include <TBRIK.h>
+#include <TBox.h>
+
+#include <TShape.h>
+#include <TNode.h>
+#include <TClonesArray.h>
+#include <TH1.h>
+#include <string.h>
+#include <iostream.h>
+
+#include "AliVZEROv0.h"
+#include "AliRun.h"
+#include "AliMC.h"
+#include "AliVZEROhit.h"
+#include "AliVZEROdigit.h"
+#include <iostream.h>
+#include <fstream.h>
+
+#include <TGeant3.h>
+#include <stdlib.h>
+#include "TObjectTable.h"
+
+#include "AliConst.h"
+#include "ABSOSHILConst.h"
+#include "ABSOConst.h"
+
+ClassImp(AliVZEROv0)
+
+//--------------------------------------------------------------------
+AliVZEROv0:: AliVZEROv0():AliVZERO()
+{
+}
+//--------------------------------------------------------------------
+AliVZEROv0::AliVZEROv0(const char *name, const char *title):
+ AliVZERO(name,title)
+{
+
+// Standard constructor for V-zeroR Detector (right part) version 0
+
+
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" create VZERO object");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+}
+//-------------------------------------------------------------------------
+void AliVZEROv0::CreateGeometry()
+{
+
+// Creates the Geant geometry of the V-zeroR Detector (right part) version 0
+
+
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" VZERO Create Geometry ");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+
+ Int_t *idtmed = fIdtmed->GetArray()-2999;
+
+ Int_t n_detec = 1;
+ Int_t n_cells = 1;
+
+ Int_t idrotm[999];
+
+ Float_t height1, height2, height3, height4, height5;
+ Float_t height;
+ Float_t theta;
+ Float_t half_thick_alu;
+ Float_t half_thick_qua1,half_thick_qua2,half_thick_qua3;
+ Float_t half_thick_qua4,half_thick_qua5;
+ Float_t zdet;
+ Float_t r0, r5;
+ Float_t pi = TMath::Pi();
+ Float_t thick_alu;
+
+ height1 = 2.3; // height of cell 1, in cm
+ height2 = 3.7; // height of cell 2, in cm
+ height3 = 6.2; // height of cell 3, in cm
+ height4 = 10.5; // height of cell 4, in cm
+ height5 = 10.5; // height of cell 5, in cm
+
+ theta = pi/12.0/2.0; // half angular opening = 7.5 degrees
+ half_thick_alu = 0.0025; // half thickness of aluminum foil, in cm
+ thick_alu = 2.0 * half_thick_alu;
+ half_thick_qua1 = fThickness1/2.0; // half thickness of WRAPPED quartz cell (inner ring)
+ half_thick_qua2 = half_thick_qua1 - 0.25;
+ half_thick_qua3 = half_thick_qua2 - 0.25;
+ half_thick_qua4 = half_thick_qua3 - 0.25;
+ half_thick_qua5 = half_thick_qua4 - 0.25;
+
+ zdet = 86.9 +fThickness/2.0; // distance to vertex (along Z axis)
+ r0 = 3.4; // closest distance to center of the beam pipe
+ height = height1 + height2 + height3 + height4 + height5;
+ r5 = r0 + height;
+
+
+// Creation of mother volume V0RI :
+
+ Float_t partube[3];
+
+ partube[0] = r0 - 0.2;
+ partube[1] = (r5 + 1.0) / TMath::Cos(theta);
+ partube[2] = fThickness/2.0;
+
+
+ gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
+
+// Creation of carbon lids (1 mm thick) to keep V0RI box shut...
+
+ Float_t parbox[10];
+
+ parbox[0] = 0.;
+ parbox[1] = 360.;
+ parbox[2] = 24;
+ parbox[3] = 2;
+ parbox[4] = -0.1/2.0;
+ parbox[5] = r0;
+ parbox[6] = r5;
+ parbox[7] = +0.1/2.0;
+ parbox[8] = r0;
+ parbox[9] = r5;
+
+
+ gMC->Gsvolu("V0CA","PGON",idtmed[3001],parbox,10);
+ gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-parbox[7],0,"ONLY");
+ gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+parbox[7],0,"ONLY");
+
+// Creation of aluminum rings to maintain the V0RI pieces ...
+
+ parbox[4] = -fThickness/2.0;
+ parbox[5] = r0 -0.2;
+ parbox[6] = r0;
+ parbox[7] = +fThickness/2.0;
+ parbox[8] = r0 -0.2;
+ parbox[9] = r0;
+
+ gMC->Gsvolu("V0IR","PGON",idtmed[3003],parbox,10);
+ gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
+
+ parbox[4] = -fThickness/2.0;
+ parbox[5] = r5;
+ parbox[6] = r5 + 1.0;
+ parbox[7] = +fThickness/2.0;
+ parbox[8] = r5;
+ parbox[9] = r5 + 1.0;
+
+ gMC->Gsvolu("V0ER","PGON",idtmed[3003],parbox,10);
+ gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
+
+// Mother volume V0R0 in which will be set 5 quartz cells
+// each one WRAPPED in reflecting aluminum :
+
+ Float_t dist0;
+ Float_t par[11];
+
+ dist0 = r0 + height / 2.0;
+ thick_alu = 2.0*half_thick_alu;
+
+ par[0] = half_thick_qua1;
+ par[1] = 0.0;
+ par[2] = 0.0;
+ par[3] = height / 2.0 ;
+ par[4] = TMath::Tan(theta) * r0;
+ par[5] = TMath::Tan(theta) * r5;
+ par[6] = 0.0;
+ par[7] = height / 2.0 ;
+ par[8] = TMath::Tan(theta) * r0;
+ par[9] = TMath::Tan(theta) * r5;
+ par[10] = 0.0;
+
+
+ gMC->Gsvolu("V0R0","TRAP",idtmed[3010],par,11); // air volume
+
+// Elementary cell of ring 1 :
+
+ Float_t dist1;
+ Float_t r1;
+ Float_t offset;
+
+ dist1 = (- height + height1) /2.0;
+ r1 = r0 + height1;
+ offset = - fThickness/2.0 + 0.1;
+
+ par[0] = half_thick_qua1 - thick_alu;
+ par[3] = height1 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r0 - thick_alu;
+ par[5] = TMath::Tan(theta) * r1- thick_alu;
+ par[7] = height1 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r0 - thick_alu;
+ par[9] = TMath::Tan(theta) * r1 - thick_alu;
+
+
+ gMC->Gsvolu("V0R1","TRAP",idtmed[3002],par,11); // quartz volume
+ gMC->Gspos("V0R1",1,"V0R0", 0.0, dist1 , 0.0, 0,"ONLY");
+
+ par[0] = half_thick_alu;
+
+ gMC->Gsvolu("V0A1","TRAP",idtmed[3004],par,11); // aluminum trap-shaped foil
+ gMC->Gspos("V0A1",1,"V0R1",0.0,0.0, - half_thick_qua1 + half_thick_alu,0,"ONLY");
+ gMC->Gspos("V0A1",2,"V0R1",0.0,0.0, + half_thick_qua1 - half_thick_alu,0,"ONLY");
+
+ parbox[0] = half_thick_alu;
+ parbox[1] = height1 / TMath::Cos(theta)/ 2.0;
+ parbox[2] = half_thick_qua1;
+
+ gMC->Gsvolu("V0A2","BOX",idtmed[3004],parbox,3); // aluminum rectangular foil
+ Float_t theta_deg = 180./12./2.0;
+ Float_t h1;
+ h1 = TMath::Tan(theta) * (r0 + height1/2.0);
+ AliMatrix(idrotm[911],90.0,+theta_deg,90.0,90.+theta_deg,0.0,0.);
+ gMC->Gspos("V0A2",1,"V0R1",-h1 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
+ AliMatrix(idrotm[912],90.0,-theta_deg,90.0,90.-theta_deg,0.0,0.);
+ gMC->Gspos("V0A2",2,"V0R1",+h1 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
+
+ parbox[0] = TMath::Tan(theta) * r0;
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua1;
+ gMC->Gsvolu("V0A3","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0A3",1,"V0R1",0.0, - (height1/2.0) + half_thick_alu ,0.0,0,"ONLY");
+
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua1;
+ gMC->Gsvolu("V0A4","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0A4",1,"V0R1",0.0, (height1/2.0) - half_thick_alu,0.0,0,"ONLY");
+
+
+// Elementary cell of ring 2 :
+
+ Float_t dist2;
+ Float_t r2;
+
+ dist2 = (- height + height2) /2.0 + height1;
+ r2 = r1 + height2;
+
+ par[0] = half_thick_qua2 - thick_alu;
+ par[3] = height2 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r1 - thick_alu;
+ par[5] = TMath::Tan(theta) * r2 - thick_alu;
+ par[7] = height2 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r1 - thick_alu;
+ par[9] = TMath::Tan(theta) * r2 - thick_alu;
+
+ gMC->Gsvolu("V0R2","TRAP",idtmed[3002],par,11); // quartz volume
+ gMC->Gspos("V0R2",1,"V0R0", 0.0, dist2 , - half_thick_qua1 + half_thick_qua2, 0,"ONLY");
+
+ par[0] = half_thick_alu;
+
+ gMC->Gsvolu("V0B1","TRAP",idtmed[3004],par,11); // aluminum trap-shaped foil
+ gMC->Gspos("V0B1",1,"V0R2",0.0,0.0, - half_thick_qua2 + half_thick_alu,0,"ONLY");
+ gMC->Gspos("V0B1",2,"V0R2",0.0,0.0, + half_thick_qua2 - half_thick_alu,0,"ONLY");
+
+ parbox[0] = half_thick_alu;
+ parbox[1] = height2 / TMath::Cos(theta)/ 2.0;
+ parbox[2] = half_thick_qua2;
+
+ gMC->Gsvolu("V0B2","BOX",idtmed[3004],parbox,3); // aluminum rectangular foil
+ Float_t h2;
+ h2 = TMath::Tan(theta) * (r0 + height1 + height2/2.0);
+ gMC->Gspos("V0B2",1,"V0R2",-h2 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
+ gMC->Gspos("V0B2",2,"V0R2",+h2 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua2;
+ gMC->Gsvolu("V0B3","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0B3",1,"V0R2",0.0, - (height2/2.0) + half_thick_alu ,0.0,0,"ONLY");
+
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua2;
+ gMC->Gsvolu("V0B4","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0B4",1,"V0R2",0.0, (height2/2.0) - half_thick_alu,0.0,0,"ONLY");
+
+
+// Elementary cell ring 3 :
+
+ Float_t dist3;
+ Float_t r3;
+
+ dist3 = (- height + height3) /2.0 + height1 + height2;
+ r3 = r2 + height3;
+
+ par[0] = half_thick_qua3 - thick_alu;
+ par[3] = height3 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r2 - thick_alu;
+ par[5] = TMath::Tan(theta) * r3 - thick_alu;
+ par[7] = height3 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r2 - thick_alu;
+ par[9] = TMath::Tan(theta) * r3 - thick_alu;
+
+ gMC->Gsvolu("V0R3","TRAP",idtmed[3002],par,11); // quartz volume
+ gMC->Gspos("V0R3",1,"V0R0", 0.0, dist3 , - half_thick_qua1 + half_thick_qua3, 0,"ONLY");
+
+
+ par[0] = half_thick_alu;
+
+ gMC->Gsvolu("V0C1","TRAP",idtmed[3004],par,11); // aluminum trap-shaped foil
+ gMC->Gspos("V0C1",1,"V0R3",0.0,0.0, - half_thick_qua3 + half_thick_alu,0,"ONLY");
+ gMC->Gspos("V0C1",2,"V0R3",0.0,0.0, + half_thick_qua3 - half_thick_alu,0,"ONLY");
+
+ parbox[0] = half_thick_alu;
+ parbox[1] = height3 / TMath::Cos(theta)/ 2.0;
+ parbox[2] = half_thick_qua3;
+
+ gMC->Gsvolu("V0C2","BOX",idtmed[3004],parbox,3); // aluminum rectangular foil
+ Float_t h3;
+ h3 = TMath::Tan(theta) * (r0 + height1 + height2 + height3/2.0);
+ gMC->Gspos("V0C2",1,"V0R3",-h3 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
+ gMC->Gspos("V0C2",2,"V0R3",+h3 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua3;
+ gMC->Gsvolu("V0C3","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0C3",1,"V0R3",0.0, - (height3/2.0) + half_thick_alu ,0.0,0,"ONLY");
+
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua3;
+ gMC->Gsvolu("V0C4","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0C4",1,"V0R3",0.0, (height3/2.0) - half_thick_alu,0.0,0,"ONLY");
+
+
+// Elementary cell ring 4 :
+
+ Float_t dist4;
+ Float_t r4;
+
+ dist4 = (- height + height4) /2.0 + height1 + height2 + height3;
+ r4 = r3 + height4;
+
+ par[0] = half_thick_qua4 - thick_alu;
+ par[3] = height4 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r3 - thick_alu;
+ par[5] = TMath::Tan(theta) * r4 - thick_alu;
+ par[7] = height4 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r3 - thick_alu;
+ par[9] = TMath::Tan(theta) * r4 - thick_alu;
+
+ gMC->Gsvolu("V0R4","TRAP",idtmed[3002],par,11); // quartz volume
+ gMC->Gspos("V0R4",1,"V0R0", 0.0, dist4 , - half_thick_qua1 + half_thick_qua4, 0,"ONLY");
+
+
+ par[0] = half_thick_alu;
+
+ gMC->Gsvolu("V0D1","TRAP",idtmed[3004],par,11); // aluminum trap-shaped foil
+ gMC->Gspos("V0D1",1,"V0R4",0.0,0.0, - half_thick_qua4 + half_thick_alu,0,"ONLY");
+ gMC->Gspos("V0D1",2,"V0R4",0.0,0.0, + half_thick_qua4 - half_thick_alu,0,"ONLY");
+
+ parbox[0] = half_thick_alu;
+ parbox[1] = height4 / TMath::Cos(theta)/ 2.0;
+ parbox[2] = half_thick_qua4;
+
+ gMC->Gsvolu("V0D2","BOX",idtmed[3004],parbox,3); // aluminum rectangular foil
+ Float_t h4;
+ h4 = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4/2.0);
+ gMC->Gspos("V0D2",1,"V0R4",-h4 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
+ gMC->Gspos("V0D2",2,"V0R4",+h4 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua4;
+ gMC->Gsvolu("V0D3","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0D3",1,"V0R4",0.0, - (height4/2.0) + half_thick_alu ,0.0,0,"ONLY");
+
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua4;
+ gMC->Gsvolu("V0D4","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0D4",1,"V0R4",0.0, (height4/2.0) - half_thick_alu,0.0,0,"ONLY");
+
+
+// Elementary cell ring 5 :
+
+ Float_t dist5;
+
+ dist5 = (- height + height5) /2.0 + height1 + height2 + height3 + height4;
+
+ par[0] = half_thick_qua5 - thick_alu;
+ par[3] = height5 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r4 - thick_alu;
+ par[5] = TMath::Tan(theta) * r5 - thick_alu;
+ par[7] = height5 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r4 - thick_alu;
+ par[9] = TMath::Tan(theta) * r5 - thick_alu;
+
+ gMC->Gsvolu("V0R5","TRAP",idtmed[3002],par,11); // quartz volume
+ gMC->Gspos("V0R5",1,"V0R0", 0.0, dist5 , - half_thick_qua1 + half_thick_qua5, 0,"ONLY");
+
+
+ par[0] = half_thick_alu;
+
+ gMC->Gsvolu("V0E1","TRAP",idtmed[3004],par,11); // aluminum trap-shaped foil
+ gMC->Gspos("V0E1",1,"V0R5",0.0,0.0, - half_thick_qua5 + half_thick_alu,0,"ONLY");
+ gMC->Gspos("V0E1",2,"V0R5",0.0,0.0, + half_thick_qua5 - half_thick_alu,0,"ONLY");
+
+ parbox[0] = half_thick_alu;
+ parbox[1] = height5 / TMath::Cos(theta)/ 2.0;
+ parbox[2] = half_thick_qua5;
+
+ gMC->Gsvolu("V0E2","BOX",idtmed[3004],parbox,3); // aluminum rectangular foil
+ Float_t h5;
+ h5 = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4 + height5/2.0);
+ gMC->Gspos("V0E2",1,"V0R5",-h5 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
+ gMC->Gspos("V0E2",2,"V0R5",+h5 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
+
+ parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua5;
+ gMC->Gsvolu("V0E3","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0E3",1,"V0R5",0.0, - (height5/2.0) + half_thick_alu ,0.0,0,"ONLY");
+
+
+ parbox[0] = TMath::Tan(theta) * r5;
+ parbox[1] = half_thick_alu;
+ parbox[2] = half_thick_qua5;
+ gMC->Gsvolu("V0E4","BOX",idtmed[3004],parbox,3);
+ gMC->Gspos("V0E4",1,"V0R5",0.0, (height5/2.0) - half_thick_alu,0.0,0,"ONLY");
+
+
+ Float_t phi_rad ;
+ Float_t phi_deg = 180./12.;
+
+
+ for(Float_t phi = 7.5; phi < 360.0; phi = phi + phi_deg)
+ {
+ phi_rad = phi*pi/180.;
+ AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
+ gMC->Gspos("V0R0",n_detec,"V0RI",-dist0*TMath::Sin(phi_rad),
+ dist0*TMath::Cos(phi_rad),offset + half_thick_qua1,idrotm[902],"ONLY");
+ n_detec++;
+ }
+
+
+ gMC->Gspos("V0RI",1,"alic",0.0,0.0,zdet,0,"ONLY");
+
+ n_cells = (n_detec - 1) * 5;
+ printf(" \n\n\n");
+ printf(" Number of cells = %d\n\n", n_cells);
+
+}
+
+
+//_____________________________________________________________________________
+void AliVZEROv0::BuildGeometry()
+{
+
+ // Builds simple ROOT TNode geometry for event display
+
+
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" VZERO BuildGeometry ");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+ TNode *Top, *Node0, *Node1, *Node2;
+ TNode *Node3, *Node4 , *Node5, *Node6 , *Node7;
+ TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
+ TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
+ const int kColorVZERO = kGreen;
+
+ Top = gAlice->GetGeometry()->GetNode("alice");
+
+ Float_t height1, height2, height3, height4, height5;
+ Float_t height;
+ Float_t theta;
+ Float_t half_thick_alu;
+ Float_t half_thick_qua1,half_thick_qua2,half_thick_qua3;
+ Float_t half_thick_qua4,half_thick_qua5;
+ Float_t zdet;
+ Float_t r0, r5;
+ Float_t pi = TMath::Pi();
+ Float_t thick_alu;
+
+ height1 = 2.3;
+ height2 = 3.7;
+ height3 = 6.2;
+ height4 = 10.5;
+ height5 = 10.5;
+
+ theta = pi/12.0/2.0;
+ half_thick_alu = 0.0025;
+ thick_alu = 2.0 * half_thick_alu;
+ half_thick_qua1 = fThickness1/2.0;
+ half_thick_qua2 = half_thick_qua1 - 0.25;
+ half_thick_qua3 = half_thick_qua2 - 0.25;
+ half_thick_qua4 = half_thick_qua3 - 0.25;
+ half_thick_qua5 = half_thick_qua4 - 0.25;
+
+ zdet = 86.9 +fThickness/2.0;
+ r0 = 3.4;
+ height = height1 + height2 + height3 + height4 + height5;
+ r5 = r0 + height;
+
+ Float_t partube[3];
+
+ partube[0] = r0 - 0.2;
+ partube[1] = (r5 + 1.0) / TMath::Cos(theta);
+ partube[2] = fThickness/2.0;
+
+ TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
+
+ Top->cd();
+
+ V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
+
+ V0Rnode->SetLineColor(kBlue);
+ fNodes->Add(V0Rnode);
+
+ V0Rnode->SetVisibility(2);
+
+
+// Rondelles de carbone (epaisseur 1 mm) de maintien des cellules ...
+
+
+ Float_t parbox[10];
+
+ parbox[0] = 0.;
+ parbox[1] = 360.;
+ parbox[2] = 24;
+ parbox[3] = 2;
+ parbox[4] = -0.1/2.0;
+ parbox[5] = r0;
+ parbox[6] = r5;
+ parbox[7] = +0.1/2.0;
+ parbox[8] = r0;
+ parbox[9] = r5;
+
+
+ TPGON *V0CA = new TPGON("V0CA", "V0CA", "void",parbox[0], parbox[1],
+ parbox[2],parbox[3]);
+
+ V0CA->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
+ V0CA->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
+
+ V0Rnode->cd();
+ V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-parbox[7],0);
+ V0Rnode6->SetLineColor(kYellow);
+ fNodes->Add(V0Rnode6);
+ V0Rnode->cd();
+ V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+parbox[7],0);
+ V0Rnode7->SetLineColor(kYellow);
+ fNodes->Add(V0Rnode7);
+
+ parbox[4] = -fThickness/2.0;
+ parbox[5] = r0 - 0.2;
+ parbox[6] = r0;
+ parbox[7] = +fThickness/2.0;
+ parbox[8] = r0 - 0.2;
+ parbox[9] = r0;
+
+ TPGON *V0IR = new TPGON("V0IR","V0IR","void", parbox[0], parbox[1],
+ parbox[2],parbox[3]);
+ V0IR->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
+ V0IR->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
+
+ V0Rnode->cd();
+ V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
+ V0Rnode8->SetLineColor(kYellow);
+ fNodes->Add(V0Rnode8);
+
+ parbox[4] = -fThickness/2.0;
+ parbox[5] = r5;
+ parbox[6] = r5 + 1.0;
+ parbox[7] = +fThickness/2.0;
+ parbox[8] = r5;
+ parbox[9] = r5 + 1.0;
+
+ TPGON *V0ER = new TPGON("V0ER","V0ER","void", parbox[0], parbox[1],
+ parbox[2],parbox[3]);
+ V0ER->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
+ V0ER->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
+
+ V0Rnode->cd();
+ V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
+ V0Rnode9->SetLineColor(kYellow);
+ fNodes->Add(V0Rnode9);
+
+ Float_t dist0;
+ Float_t par[11];
+
+ dist0 = r0 + height / 2.0;
+ thick_alu = 2.0*half_thick_alu;
+
+ par[0] = half_thick_qua1;
+ par[1] = 0.0;
+ par[2] = 0.0;
+ par[3] = height / 2.0 ;
+ par[4] = TMath::Tan(theta) * r0;
+ par[5] = TMath::Tan(theta) * r5;
+ par[6] = 0.0;
+ par[7] = height / 2.0 ;
+ par[8] = TMath::Tan(theta) * r0;
+ par[9] = TMath::Tan(theta) * r5;
+ par[10] = 0.0;
+
+ TTRAP *V0R0 = new TTRAP("V0R0", "V0R0", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+ Float_t dist1;
+ Float_t r1;
+ Float_t offset;
+
+ dist1 = (- height + height1) /2.0;
+ r1 = r0 + height1;
+ offset = - fThickness/2.0 + 0.1;
+
+ par[0] = half_thick_qua1 - thick_alu;
+ par[3] = height1 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r0 - thick_alu;
+ par[5] = TMath::Tan(theta) * r1- thick_alu;
+ par[7] = height1 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r0 - thick_alu;
+ par[9] = TMath::Tan(theta) * r1 - thick_alu;
+
+ TTRAP *V0R1 = new TTRAP("V0R1", "V0R1", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+
+ Float_t dist2;
+ Float_t r2;
+
+ dist2 = (- height + height2) /2.0 + height1;
+ r2 = r1 + height2;
+
+ par[0] = half_thick_qua2 - thick_alu;
+ par[3] = height2 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r1 - thick_alu;
+ par[5] = TMath::Tan(theta) * r2 - thick_alu;
+ par[7] = height2 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r1 - thick_alu;
+ par[9] = TMath::Tan(theta) * r2 - thick_alu;
+
+
+ TTRAP *V0R2 = new TTRAP("V0R2", "V0R2", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+
+ Float_t dist3;
+ Float_t r3;
+
+ dist3 = (- height + height3) /2.0 + height1 + height2;
+ r3 = r2 + height3;
+
+ par[0] = half_thick_qua3 - thick_alu;
+ par[3] = height3 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r2 - thick_alu;
+ par[5] = TMath::Tan(theta) * r3 - thick_alu;
+ par[7] = height3 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r2 - thick_alu;
+ par[9] = TMath::Tan(theta) * r3 - thick_alu;
+
+
+ TTRAP *V0R3 = new TTRAP("V0R3", "V0R3", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+
+ Float_t dist4;
+ Float_t r4;
+
+ dist4 = (- height + height4) /2.0 + height1 + height2 + height3;
+ r4 = r3 + height4;
+
+ par[0] = half_thick_qua4 - thick_alu;
+ par[3] = height4 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r3 - thick_alu;
+ par[5] = TMath::Tan(theta) * r4 - thick_alu;
+ par[7] = height4 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r3 - thick_alu;
+ par[9] = TMath::Tan(theta) * r4 - thick_alu;
+
+
+ TTRAP *V0R4 = new TTRAP("V0R4", "V0R4", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+
+ Float_t dist5;
+
+ dist5 = (- height + height5) /2.0 + height1 + height2 + height3 + height4;
+
+ par[0] = half_thick_qua5 - thick_alu;
+ par[3] = height5 / 2.0 - thick_alu;
+ par[4] = TMath::Tan(theta) * r4 - thick_alu;
+ par[5] = TMath::Tan(theta) * r5 - thick_alu;
+ par[7] = height5 / 2.0 - thick_alu;
+ par[8] = TMath::Tan(theta) * r4 - thick_alu;
+ par[9] = TMath::Tan(theta) * r5 - thick_alu;
+
+
+ TTRAP *V0R5 = new TTRAP("V0R5", "V0R5", "void", par[0], par[1], par[2], par[3],
+ par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
+
+
+ Float_t phi;
+ Float_t phi_deg= 180./12.;
+ Float_t phi_rad;
+ Float_t xdet,ydet;
+ Int_t n_detec = 1;
+ char NameNode[12];
+
+
+ for (phi = 7.5; phi < 360.0; phi = phi + phi_deg)
+ {
+
+ TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
+
+ phi_rad = phi*pi/180.;
+ xdet = dist0*TMath::Sin(phi_rad);
+ ydet = dist0*TMath::Cos(phi_rad);
+
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+
+ V0Rnode->cd();
+ V0Rnode0 = new TNode(NameNode,NameNode,V0R0,-xdet,ydet, offset + half_thick_qua1,mat920);
+ V0Rnode0->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode0);
+ n_detec++;
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+ V0Rnode0->cd();
+ V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,dist1, 0.0,0);
+ V0Rnode1->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode1);
+ n_detec++;
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+ V0Rnode0->cd();
+ V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,dist2, - half_thick_qua1 + half_thick_qua2,0);
+ V0Rnode2->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode2);
+ n_detec++;
+
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+ V0Rnode0->cd();
+ V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,dist3, - half_thick_qua1 + half_thick_qua3,0);
+ V0Rnode3->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode3);
+ n_detec++;
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+ V0Rnode0->cd();
+ V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,dist4, - half_thick_qua1 + half_thick_qua4,0);
+ V0Rnode4->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode4);
+ n_detec++;
+
+ sprintf(NameNode,"SUBDET%d",n_detec);
+ V0Rnode0->cd();
+ V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,dist5, - half_thick_qua1 + half_thick_qua5,0);
+ V0Rnode5->SetLineColor(kColorVZERO);
+ fNodes->Add(V0Rnode5);
+ n_detec++;
+
+ V0Rnode0->SetVisibility(2);
+
+ }
+
+
+// Here I add the enveloppe of the FRONTAL ABSORBER defined by Andreas Morsch
+// in AliABSOv0::CreateGeometry() :
+
+ Float_t parm[24];
+ Float_t dz;
+
+ Top->cd();
+
+ parm[0] = 0.;
+ parm[1] = 360.;
+ parm[2] = 7.;
+
+ parm[3] = -(zRear-zAbsStart)/2.;
+ parm[4] = rAbs;
+ parm[5] = zAbsStart * TMath::Tan(theta1);
+
+ parm[6] = parm[3]+(zNose-zAbsStart);
+ parm[7] = rAbs;
+ parm[8] = zNose * TMath::Tan(theta1);
+
+ parm[9] = parm[3]+(zConeTPC-zAbsStart);
+ parm[10] = rAbs;
+ parm[11] = parm[8] + (parm[9] - parm[6]) * TMath::Tan(theta2);
+
+ parm[12] = parm[3]+(zOpen-zAbsStart);
+ parm[13] = rAbs;
+ parm[14] = parm[11] + (parm[12] - parm[9]) * TMath::Tan(accMax);
+
+ parm[15] = parm[3]+(zRear-dRear-zAbsStart);
+ parm[16] = rAbs + (parm[15] - parm[12]) * TMath::Tan(thetaOpen1) ;
+ parm[17] = parm[14] + (parm[15] - parm[12]) * TMath::Tan(accMax);
+
+ parm[18] = parm[3]+(zRear-dRear-zAbsStart);
+ parm[19] = (zRear-dRear) * TMath::Tan(accMin);
+ parm[20] = parm[14] + (parm[18] - parm[12]) * TMath::Tan(accMax);
+
+ parm[21] = -parm[3];
+ parm[22] = zRear* TMath::Tan(accMin);
+ parm[23] = parm[20] + (parm[21] - parm[18]) * TMath::Tan(accMax);
+
+ printf(" zRear, zAbsStart, rAbs = %f , %f , %f \n\n",
+ zRear, zAbsStart, rAbs );
+
+
+ TPCON *abs0 = new TPCON("abs0", "abs0", "void", parm[0], parm[1], parm[2]);
+
+
+ abs0->DefineSection(0, parm[3], parm[4], parm[5] );
+ abs0->DefineSection(1, parm[6], parm[7], parm[8] );
+ abs0->DefineSection(2, parm[9], parm[10], parm[11] );
+ abs0->DefineSection(3,parm[12], parm[13], parm[14] );
+ abs0->DefineSection(4,parm[15], parm[16], parm[17] );
+ abs0->DefineSection(5,parm[18], parm[19], parm[20] );
+ abs0->DefineSection(6,parm[21], parm[22], parm[23] );
+
+ dz = (zRear-zAbsStart)/2.+zAbsStart;
+
+ TRotMatrix* mat921 = new TRotMatrix("rot921","rot921",90.0,0.0,90.,90.0,180.0,0.0);
+
+ Node0 = new TNode("abs0","abs0",abs0,0.0,0.0,dz,0);
+ Node0->SetLineColor(38);
+ fNodes->Add(Node0);
+
+
+ Float_t cpar[5];
+
+ cpar[0] = (zNose - zAbsStart) / 2.;
+ cpar[1] = zAbsStart * TMath::Tan(accMax);
+ cpar[2] = zAbsStart * TMath::Tan(theta1)-dSteel;
+ cpar[3] = zNose * TMath::Tan(accMax);
+ cpar[4] = zNose * TMath::Tan(theta1)-dSteel;
+
+ dz = -(zRear-zAbsStart)/2.+cpar[0];
+
+ TCONE *abs1 = new TCONE("abs1", "abs1", "void", cpar[0], cpar[1], cpar[2],
+ cpar[3], cpar[4]);
+
+ Node0->cd();
+
+ Node1 = new TNode("abs1","abs1",abs1,0.0,0.0,dz,0);
+ Node1->SetLineColor(7);
+ fNodes->Add(Node1);
+
+// Here I add a reference box to visualise the vertex zone :
+
+ Top->cd();
+
+ Float_t paref[3];
+
+ paref[0] = 10.0;
+ paref[1] = 15.0;
+ paref[2] = 5.6;
+
+ TBRIK *aref = new TBRIK("aref","aref", "void", paref[0],paref[1],paref[2]);
+
+ Node2 = new TNode("aref","aref",aref,0.0,0.0,0.0,0);
+ Node2->SetLineColor(kBlue);
+ fNodes->Add(Node2);
+
+// Here I add the mother volume QBPM
+// and the flanges QB29, QB22 et QB24 defined by Andreas Morsch
+// in AliPIPEv0::CreateGeometry() :
+
+
+ Float_t parp[36];
+
+// Mother Volume QBPM :
+
+ parp[0] = 0;
+ parp[1] = 360;
+ parp[2] = 11;
+
+ parp[3] = - 90;
+ parp[4] = 0;
+ parp[5] = 5.8;
+
+ parp[6] = - 81.0;
+ parp[7] = 0.;
+ parp[8] = 5.8;
+
+ parp[9] = - 81.;
+ parp[10] = 0.;
+ parp[11] = 4.22;
+
+ parp[12] = - 28.00;
+ parp[13] = 0;
+ parp[14] = 4.22;
+
+ parp[15] = - 28.00;
+ parp[16] = 0;
+ parp[17] = 3.2;
+
+ parp[18] = 0;
+ parp[19] = 0;
+ parp[20] = 3.2;
+
+ parp[21] = 28.00;
+ parp[22] = 0;
+ parp[23] = 3.2;
+
+ parp[24] = 28.00;
+ parp[25] = 0;
+ parp[26] = 4.22;
+
+ parp[27] = 250;
+ parp[28] = 0;
+ parp[29] = 4.22;
+
+ parp[30] = 250;
+ parp[31] = 0;
+ parp[32] = 5;
+
+ parp[33] = 800;
+ parp[34] = 0;
+ parp[35] = 5;
+
+ TPCON *pip0 = new TPCON("pip0", "pip0", "void", parp[0], parp[1], parp[2]);
+
+ pip0->DefineSection( 0, parp[3], parp[4], parp[5] );
+ pip0->DefineSection( 1, parp[6], parp[7], parp[8] );
+ pip0->DefineSection( 2, parp[9], parp[10], parp[11] );
+ pip0->DefineSection( 3,parp[12], parp[13], parp[14] );
+ pip0->DefineSection( 4,parp[15], parp[16], parp[17] );
+ pip0->DefineSection( 5,parp[18], parp[19], parp[20] );
+ pip0->DefineSection( 6,parp[21], parp[22], parp[23] );
+ pip0->DefineSection( 7,parp[24], parp[25], parp[26] );
+ pip0->DefineSection( 8,parp[27], parp[28], parp[29] );
+ pip0->DefineSection( 9,parp[30], parp[31], parp[32] );
+ pip0->DefineSection(10,parp[33], parp[34], parp[35] );
+
+ dz = 0.0;
+
+ Top->cd();
+
+ Node3 = new TNode("pip0","pip0",pip0,0.0,0.0,dz,mat921);
+ Node3->SetLineColor(10);
+ fNodes->Add(Node3);
+ Node3->SetVisibility(2);
+
+// Flanges QB29 at 654.8 and 254.8 cms :
+
+ Float_t ptube[3];
+
+ ptube[0] = 3.0;
+ ptube[1] = 4.9;
+ ptube[2] = 2.2;
+
+ TTUBE *pip1 = new TTUBE("pip1", "pip1", "void", ptube[0], ptube[1], ptube[2]);
+
+ Node3->cd();
+
+
+ Node4 = new TNode("pip1","pip1",pip1,0.0,0.0,254.8,0);
+ Node4->SetLineColor(6);
+ fNodes->Add(Node4);
+
+ TTUBE *pip2 = new TTUBE("pip2", "pip2", "void", ptube[0], ptube[1], ptube[2]);
+
+ Node3->cd();
+
+ Node5 = new TNode("pip2","pip2",pip2,0.0,0.0,654.8,0);
+ Node5->SetLineColor(6);
+ fNodes->Add(Node5);
+
+
+// Al-Be section QBAB at 335.0 cm (LEFT side) :
+
+ ptube[0] = 2.90;
+ ptube[1] = 3.05;
+ ptube[2] = 171.0;
+
+ TTUBE *pip3 = new TTUBE("pip3", "pip3", "void", ptube[0], ptube[1], ptube[2]);
+
+ Node3->cd();
+
+ Node6 = new TNode("pip3","pip3",pip3,0.0,0.0,335.0+ptube[2],0);
+ Node6->SetLineColor(6);
+ fNodes->Add(Node6);
+
+// Here I add the flange which is sitting on beam line
+// right in front of V0R detector, and which I found on CERN drawing
+// entitled : ALICE BEAM VACCUM CHAMBER - RB26 version III :
+
+ ptube[0] = 3.0;
+ ptube[1] = 5.675;
+ ptube[2] = 0.9;
+
+ TTUBE *pip4 = new TTUBE("pip4", "pip4", "void", ptube[0], ptube[1], ptube[2]);
+
+ Node3->cd();
+
+
+ Node7 = new TNode("pip4","pip4",pip4,0.0,0.0,-85.0-0.9,0);
+ Node7->SetLineColor(6);
+ fNodes->Add(Node7);
+
+ }
+
+
+//------------------------------------------------------------------------
+void AliVZEROv0::CreateMaterials()
+{
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" VZERO create materials ");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+/* ................... OLD VALUES ( used in RICH) ............................
+ Float_t ppckov[14] = { 5.63e-9,5.77e-9,5.9e-9,6.05e-9,6.2e-9,6.36e-9,6.52e-9,
+ 6.7e-9,6.88e-9,7.08e-9,7.3e-9,7.51e-9,7.74e-9,8e-9 };
+ Float_t rindex_quarz[14] = { 1.528309,1.533333,
+ 1.538243,1.544223,1.550568,1.55777,
+ 1.565463,1.574765,1.584831,1.597027,
+ 1.611858,1.6277,1.6472,1.6724 };
+ Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
+ 6.324,4.483,1.6,.323,.073,0. };
+...................................................................................... */
+
+
+ Float_t ppckov[14] = { 5.5e-9, 5.7e-9, 5.9e-9, 6.1e-9, 6.3e-9, 6.5e-9, 6.7e-9,
+ 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
+
+ Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
+ 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
+ 1.662295, 1.68337 };
+
+ Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
+ 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
+
+ Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
+
+
+ Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
+
+ Float_t absco_alu[14] = { 1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,
+ 1e-4,1e-4,1e-4,1e-4 };
+ Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
+
+
+ Int_t *idtmed = fIdtmed->GetArray()-2999;
+
+ TGeant3 *geant3 = (TGeant3*) gMC;
+
+// Parameters related to Quarz (SiO2) :
+
+ Float_t aqua[2], zqua[2], densqua, wmatqua[2];
+ Int_t nlmatqua;
+
+ aqua[0] = 28.09;
+ aqua[1] = 16.;
+ zqua[0] = 14.;
+ zqua[1] = 8.;
+ densqua = 2.64;
+ nlmatqua = -2;
+ wmatqua[0] = 1.;
+ wmatqua[1] = 2.;
+
+// Parameters related to aluminum sheets :
+
+ Float_t aal = 26.98;
+ Float_t zal = 13.00;
+ Float_t densal= 2.7;
+ Float_t radlal= 8.9;
+
+// Parameters related to scintillator CH :
+
+ Float_t ascin[2] = {1.01,12.01};
+ Float_t zscin[2] = {1,6};
+ Float_t wscin[2] = {1,1};
+ Float_t denscin = 1.03;
+
+// Definition of materials :
+
+ AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500);
+ AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500);
+ AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9);
+ AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
+ AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2);
+ AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0);
+
+
+ AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
+
+
+ Int_t ISXFLD = gAlice->Field()->Integ();
+ Float_t SXMGMX = gAlice->Field()->Max();
+
+ Float_t tmaxfd, stemax, deemax, epsil, stmin;
+
+ tmaxfd = -10.;
+ stemax = -0.1;
+ deemax = -0.1;
+ epsil = -0.01;
+ stmin = -0.001;
+
+
+// Active Air :
+ AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
+
+// Inactive air :
+
+ AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
+
+ AliMedium(2, "CARBON$ ", 2, 1, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
+
+ AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin);
+
+ AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
+ AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
+ AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003);
+
+ gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
+ gMC->Gstpar(idtmed[3000], "HADR", 1.);
+ gMC->Gstpar(idtmed[3000], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3000], "DRAY", 1.);
+
+ gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
+ gMC->Gstpar(idtmed[3001], "HADR", 1.);
+ gMC->Gstpar(idtmed[3001], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3001], "DRAY", 1.);
+
+ gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
+ gMC->Gstpar(idtmed[3002], "HADR", 1.);
+ gMC->Gstpar(idtmed[3002], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3002], "DRAY", 1.);
+
+ gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
+ gMC->Gstpar(idtmed[3003], "HADR", 1.);
+ gMC->Gstpar(idtmed[3003], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3003], "DRAY", 1.);
+
+ gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
+ gMC->Gstpar(idtmed[3004], "HADR", 1.);
+ gMC->Gstpar(idtmed[3004], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3004], "DRAY", 1.);
+
+ gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
+ gMC->Gstpar(idtmed[3005], "HADR", 1.);
+ gMC->Gstpar(idtmed[3005], "DCAY", 1.);
+ gMC->Gstpar(idtmed[3005], "DRAY", 1.);
+
+ geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
+
+ geant3->Gsckov(idtmed[3004], 14, ppckov, absco_alu, effic_alu, rindex_alu);
+
+}
+//---------------------------------------------------------------------
+void AliVZEROv0::DrawModule()
+{
+
+// Drawing is done in DrawVZERO.C
+
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" VZERO DrawModule ");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+
+}
+
+//-------------------------------------------------------------------
+void AliVZEROv0::Init()
+{
+// Initialises version 0 of the VZERO Detector
+// Just prints an information message
+
+ Int_t i;
+
+ printf("\n");
+ for(i=0;i<35;i++) printf("*");
+ printf(" VZERO_Init \n");
+ for(i=0;i<35;i++) printf("*");
+ printf("\n");
+
+ fMulti = 0;
+ fNCerenkovs = 0;
+ fNGCerenkovs = 0;
+ fNdead = 0;
+
+ BookingHistograms();
+
+}
+
+//-------------------------------------------------------------------
+
+void AliVZEROv0::StepManager()
+{
+
+// Minimal version of StepManager :
+// Everything has been removed, I only AddHit whenever hit is in
+// volume V0RI.
+
+ Int_t copy;
+ Int_t vol[4]; // (box, layer, row, column) indices
+ Float_t hits[19]; // position wrt MRS, energies...
+
+ TLorentzVector pos;
+ Float_t global[3];
+ Float_t local[3];
+
+ TLorentzVector momentum;
+ Float_t theta;
+ Float_t phi;
+ Float_t mom[4];
+ Float_t kRaddeg = 180/TMath::Pi();
+
+ Float_t TrackEnters = 0.0;
+ Float_t TrackExits = 0.0;
+ Float_t Cerenkov = 0.0;
+
+ gMC->SetMaxStep(fMaxStepAlu);
+ gMC->SetMaxStep(fMaxStepQua);
+
+ if (!gMC->IsTrackAlive()) return;
+
+ if (gMC->IsTrackEntering()) TrackEnters = 1.0;
+ if (gMC->IsTrackExiting() ) TrackExits = 1.0;
+ if (gMC->TrackPid() == 50000050) Cerenkov = 1.0;
+
+
+
+ gMC->TrackPosition(pos);
+ gMC->TrackMomentum(momentum);
+
+ mom[0] = momentum[0];
+ mom[1] = momentum[1];
+ mom[2] = momentum[2];
+ mom[3] = momentum[3];
+
+ Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
+ Double_t rt = TMath::Sqrt(tc);
+ theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
+ phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
+
+ global[0] = pos[0];
+ global[1] = pos[1];
+ global[2] = pos[2];
+
+
+ gMC->Gmtod(global,local,1);
+
+ hits[0] = global[0];
+ hits[1] = global[1];
+ hits[2] = global[2];
+ hits[3] = local[0];
+ hits[4] = local[1];
+ hits[5] = local[2];
+ hits[6] = gMC->Edep();
+ hits[7] = gMC->Etot();
+ hits[8] = Float_t (gMC->TrackPid());
+ hits[9] = Float_t (gMC->IdFromPDG(gMC->TrackPid()));
+ hits[10] = gMC->TrackTime();
+ hits[11] = TrackEnters;
+ hits[12] = TrackExits;
+ hits[13] = gMC->TrackCharge();
+ hits[14] = Cerenkov;
+
+ hits[16] = theta;
+ hits[17] = phi;
+
+ vol[0] = gMC->CurrentVolOffID(1, vol[1]);
+ vol[2] = gMC->CurrentVolID(copy);
+ vol[3] = copy;
+
+
+ if (gMC->CurrentVolID(copy) >= gMC->VolId("V0RI") &&
+ gMC->CurrentVolID(copy) <= gMC->VolId("V0E4"))
+ {
+ AddHit(gAlice->CurrentTrack(), vol, hits);
+ }
+
+ }
+
+//---------------------------------------------------------------------
+void AliVZEROv0::AddHit(Int_t track, Int_t* vol, Float_t* hits)
+{
+
+ // Adds a hit
+
+
+ TClonesArray &lhits = *fHits;
+
+ new(lhits[fNhits++]) AliVZEROhit(fIshunt, track, vol, hits);
+
+}
+
+//---------------------------------------------------------------------
+void AliVZEROv0::FinishEvent()
+{
+
+ printf("\n");
+ for(int i=0;i<30;i++) printf("*");
+ printf(" VZERO_finishevent");
+ for(int i=0;i<30;i++) printf("*");
+ printf("\n");
+
+ AddDigit(tracks, digits);
+
+
+ if(fMulti > 0) fhMultiplicity->Fill(fMulti);
+ fhCerenkov->Fill(fNCerenkovs);
+
+ fMulti = 0;
+ fNCerenkovs = 0;
+ fNGCerenkovs = 0;
+ fNdead = 0;
+
+}
+
+//---------------------------------------------------------------------
+void AliVZEROv0::AddDigit(Int_t *tracks, Int_t* digits)
+{
+
+ TClonesArray &ldigits = *fDigits;
+
+ new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
+
+}
+
+
+//---------------------------------------------------------------------
+void AliVZEROv0::MakeBranch(Option_t *option)
+{
+
+ // Creates new branches in the current Root Tree
+
+
+ char branchname[10];
+ sprintf(branchname,"%s",GetName());
+
+
+ char *H = strstr(option,"H");
+
+ if (fHits && gAlice->TreeH() && H) {
+ gAlice->TreeH()->Branch(branchname,&fHits, fBufferSize);
+ printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
+ }
+
+ char *D = strstr(option,"D");
+ //
+ if (fDigits && gAlice->TreeD() && D) {
+ gAlice->TreeD()->Branch(branchname,&fDigits, fBufferSize);
+ printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
+ }
+
+
+}
+
+//---------------------------------------------------------------------
+void AliVZEROv0::BookingHistograms()
+{
+
+ if (fhMultiplicity)
+ delete fhMultiplicity;
+
+ if (fhGEANTcode)
+ delete fhGEANTcode;
+
+ if (fhCerenkov)
+ delete fhCerenkov;
+
+ if (fhToF)
+ delete fhToF;
+
+// fhMultiplicity = new TH1F("hMultiplicity", "hMultiplicity", 350, 0. , 350.);
+
+ fhMultiplicity = new TH1F("hMultiplicity", "hMultiplicity", 100, 1. , 100.);
+ fhGEANTcode = new TH1F("hGEANTcode", "hGEANTcode", 50, 1., 50.);
+ fhCerenkov = new TH1F("hCerenkov", "hCerenkov", 100, 1., 100000.);
+ fhToF = new TH1F("hToF", "hToF",150,2.0,7.0);
+
+}
+
+//---------------------------------------------------------------------
+void AliVZEROv0::FinishRun()
+{
+
+ SavingHistograms();
+}
+
+
+
+//---------------------------------------------------------------------
+void AliVZEROv0::SavingHistograms()
+{
+
+// Saves the histograms in a root file named "name.save"
+
+
+ Text_t outputname[8] ;
+ outputname = "Fileout";
+ TFile output(outputname,"RECREATE");
+ output.cd();
+
+ if (fhMultiplicity)
+ fhMultiplicity->Write();
+ if (fhGEANTcode)
+ fhGEANTcode->Write();
+ if (fhCerenkov)
+ fhCerenkov->Write();
+ if (fhToF)
+ fhToF->Write();
+}