/*
$Log$
+Revision 1.5 2000/06/12 19:39:01 morsch
+New structure of beam pipe and heating jacket.
+
+Revision 1.4 2000/04/03 08:13:40 fca
+Introduce extra scope for non ANSI compliant C++ compilers
+
+Revision 1.3 2000/01/18 17:49:56 morsch
+Serious overlap of ABSM with shield corrected
+Small error in ARPB parameters corrected
+
+Revision 1.2 2000/01/13 11:23:59 morsch
+Last layer of Pb outer angle corrected
+
Revision 1.1 2000/01/12 15:39:30 morsch
-Standar version of ABSO
+Standard version of ABSO
*/
#include "AliABSOv0.h"
#include "AliRun.h"
#include "AliConst.h"
-
+
ClassImp(AliABSOv0)
//_____________________________________________________________________________
//_____________________________________________________________________________
void AliABSOv0::CreateGeometry()
{
- //
- // Creation of the geometry of the muon absorber
- //
- //Begin_Html
- /*
- <img src="picts/AliABSOv0Tree.gif">
- */
- //End_Html
- //Begin_Html
- /*
- <img src="picts/AliABSOv0.gif">
- */
- //End_Html
-
-
- Int_t *idtmed = fIdtmed->GetArray()-1599;
-
- Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
- Float_t dz;
-#include "ShieldConst.h"
-// Mother volume and outer shielding: Pb
+ //
+ // Creation of the geometry of the muon absorber
+ //
+ //Begin_Html
+ /*
+ <img src="picts/AliABSOv0Tree.gif">
+ */
+ //End_Html
+ //Begin_Html
+ /*
+ <img src="picts/AliABSOv0.gif">
+ */
+ //End_Html
+ //
+ //
+
+ enum {kC=1605, kAl=1608, kFe=1609, kCu=1610, kW=1611, kPb=1612,
+ kNiCuW=1620, kVacuum=1615, kAir=1614, kConcrete=1616,
+ kPolyCH2=1617, kSteel=1609, kInsulation=1613};
+
+ Int_t *idtmed = fIdtmed->GetArray()-1599;
+
+ Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
+ Float_t dz;
+
+#include "ABSOSHILConst.h"
+#include "ABSOConst.h"
+ Float_t dTube=0.1; // tube thickness
+ Float_t dInsu=0.5; // insulation thickness
+ Float_t dEnve=0.1; // protective envelope thickness
+ Float_t dFree=0.5; // clearance thickness
+
+
+// Mother volume and outer shielding: Pb
par[0] = 0.;
par[1] = 360.;
par[2] = 7.;
+
+ par[3] = -(zRear-zAbsStart)/2.;
+ par[4] = rAbs;
+ par[5] = zAbsStart * TMath::Tan(theta1);
- par[3] = -(abs_l-abs_d)/2.;
- par[4] = r_abs;
- par[5] = abs_d * TMath::Tan(theta1);
-
- par[6] = par[3]+(z_nose-abs_d);
- par[7] = r_abs;
- par[8] = z_nose * TMath::Tan(theta1);
+ par[6] = par[3]+(zNose-zAbsStart);
+ par[7] = rAbs;
+ par[8] = zNose * TMath::Tan(theta1);
- par[9] = par[3]+(z_cone-abs_d);
- par[10] = r_abs;
+ par[9] = par[3]+(zConeTPC-zAbsStart);
+ par[10] = rAbs;
par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2);
- par[12] = par[3]+(abs_c-abs_d);
- par[13] = r_abs;
- par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max);
+ par[12] = par[3]+(zOpen-zAbsStart);
+ par[13] = rAbs;
+ par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(accMax);
- par[15] = par[3]+(abs_l-d_rear-abs_d);
- par[16] = r_abs + (par[15] - par[12]) * TMath::Tan(theta_open1) ;
- par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max);
+ par[15] = par[3]+(zRear-dRear-zAbsStart);
+ par[16] = rAbs + (par[15] - par[12]) * TMath::Tan(thetaOpen1) ;
+ par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(accMax);
- par[18] = par[3]+(abs_l-d_rear-abs_d);
- par[19] = (abs_l-d_rear) * TMath::Tan(acc_min);
- par[20] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max);
+ par[18] = par[3]+(zRear-dRear-zAbsStart);
+ par[19] = (zRear-dRear) * TMath::Tan(accMin);
+ par[20] = par[14] + (par[18] - par[12]) * TMath::Tan(accMax);
par[21] = -par[3];
- par[22] = abs_l* TMath::Tan(acc_min);
- par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(acc_max);
- gMC->Gsvolu("ABSS", "PCON", idtmed[1612], par, 24);
- for (Int_t i=4; i<24; i+=3) par[i] = 0;
- gMC->Gsvolu("ABSM", "PCON", idtmed[1655], par, 24);
+ par[22] = zRear* TMath::Tan(accMin);
+ par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(accMax);
+ gMC->Gsvolu("ABSS", "PCON", idtmed[kPb], par, 24);
+ { // Begin local scope for i
+ for (Int_t i=4; i<18; i+=3) par[i] = 0;
+ } // End local scope for i
+ gMC->Gsvolu("ABSM", "PCON", idtmed[kVacuum+40], par, 24);
gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");
//
// Steel envelope
//
- par[4] = par[5] -d_steel;
- par[7] = par[8] -d_steel;
- par[10]= par[11]-d_steel;
- par[13]= par[14]-d_steel;
- par[16]= par[17]-d_steel;
- par[19]= par[20]-d_steel;
- par[22]= par[23]-d_steel;
- gMC->Gsvolu("ABST", "PCON", idtmed[1618], par, 24);
+ par[4] = par[5] -dSteel;
+ par[7] = par[8] -dSteel;
+ par[10]= par[11]-dSteel;
+ par[13]= par[14]-dSteel;
+ par[16]= par[17]-dSteel;
+ par[19]= par[20]-dSteel;
+ par[22]= par[23]-dSteel;
+ gMC->Gsvolu("ABST", "PCON", idtmed[kSteel], par, 24);
gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
//
// Polyethylene shield
//
- cpar[0] = (abs_l - z_cone) / 2.;
- cpar[1] = z_cone * TMath::Tan(acc_max);
- cpar[2] = cpar[1] + d_poly;
- cpar[3] = abs_l * TMath::Tan(acc_max);
- cpar[4] = cpar[3] + d_poly;
- gMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar, 5);
- dz = (abs_l-abs_d)/2.-cpar[0];
+ cpar[0] = (zRear - zConeTPC) / 2.;
+ cpar[1] = zConeTPC * TMath::Tan(accMax);
+ cpar[2] = cpar[1] + dPoly;
+ cpar[3] = zRear * TMath::Tan(accMax);
+ cpar[4] = cpar[3] + dPoly;
+ gMC->Gsvolu("APOL", "CONE", idtmed[kPolyCH2+40], cpar, 5);
+ dz = (zRear-zAbsStart)/2.-cpar[0];
gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");
//
// Tungsten nose to protect TPC
//
- cpar[0] = (z_nose - abs_d) / 2.;
- cpar[1] = abs_d * TMath::Tan(acc_max);
- cpar[2] = abs_d * TMath::Tan(theta1)-d_steel;
- cpar[3] = z_nose * TMath::Tan(acc_max);
- cpar[4] = z_nose * TMath::Tan(theta1)-d_steel;
- gMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar, 5);
- //
- dz = -(abs_l-abs_d)/2.+cpar[0];
+ 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;
+ gMC->Gsvolu("ANOS", "CONE", idtmed[kW], cpar, 5);
+//
+ dz = -(zRear-zAbsStart)/2.+cpar[0];
gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
//
// Tungsten inner shield
//
- cpar[0] = (abs_l-d_rear - abs_c)/ 2.;
- cpar[1] = r_abs;
- cpar[2] = abs_c * TMath::Tan(acc_min);
- cpar[3] = r_abs + 2. * cpar[0] * TMath::Tan(theta_open1);
- cpar[4] = (abs_l-d_rear) * TMath::Tan(acc_min);
- gMC->Gsvolu("AWIN", "CONE", idtmed[1651], cpar, 5);
+ Float_t zW=zTwoDeg+.1;
+ Float_t dZ = zW+(zRear-dRear-zW)/2.;
+ //
+ pcpar[0] = 0.;
+ pcpar[1] = 360.;
+ pcpar[2] = 3.;
+ pcpar[3] = zW-dZ;
+ pcpar[4] = rAbs;
+ pcpar[5] = zW * TMath::Tan(accMin);
+ pcpar[6] = zOpen-dZ;
+ pcpar[7] = rAbs;
+ pcpar[8] = zOpen * TMath::Tan(accMin);
+ pcpar[9] = zRear-dRear-dZ;
+ pcpar[10] = rAbs+(zRear-dRear-zOpen) * TMath::Tan(thetaOpen1);
+ pcpar[11] = (zRear-dRear) * TMath::Tan(accMin);
+
+ gMC->Gsvolu("AWIN", "PCON", idtmed[kNiCuW+40], pcpar, 12);
//
- dz = (abs_l-abs_d)/2.-cpar[0]-d_rear;
+ dz=(zW+zRear-dRear)/2-(zAbsStart+zRear)/2.;
gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
// Inner tracking region
pcpar[0] = 0.;
pcpar[1] = 360.;
pcpar[2] = 3.;
- pcpar[3] = -(abs_l-abs_d)/2.;
- pcpar[4] = r_abs;
- pcpar[5] = abs_d * TMath::Tan(acc_max);
- pcpar[6] = pcpar[3]+(z_2deg-abs_d);
- pcpar[7] = r_abs;
- pcpar[8] = z_2deg * TMath::Tan(acc_max);
- pcpar[9] = -par[3];
- pcpar[10] = abs_l * TMath::Tan(acc_min);
- pcpar[11] = abs_l * TMath::Tan(acc_max);
- gMC->Gsvolu("AITR", "PCON", idtmed[1612], pcpar, 12);
+ pcpar[3] = -(zRear-zAbsStart)/2.;
+ pcpar[4] = rAbs;
+ pcpar[5] = zAbsStart * TMath::Tan(accMax);
+ pcpar[6] = pcpar[3]+(zTwoDeg-zAbsStart);
+ pcpar[7] = rAbs;
+ pcpar[8] = zTwoDeg * TMath::Tan(accMax);
+ pcpar[9] = -pcpar[3];
+ pcpar[10] = zRear * TMath::Tan(accMin);
+ pcpar[11] = zRear * TMath::Tan(accMax);
+ gMC->Gsvolu("AITR", "PCON", idtmed[kPb], pcpar, 12);
//
// special Pb medium for last 5 cm of Pb
- zr=abs_l-5;
- cpar[0] = 2.5;
- cpar[1] = zr * TMath::Tan(theta_r);
- cpar[2] = zr * TMath::Tan(acc_max);
- cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5;
- cpar[4] = cpar[2] + TMath::Tan(acc_max) * 5;
- gMC->Gsvolu("ARPB", "CONE", idtmed[1632], cpar, 5);
- dz=(abs_l-abs_d)/2.-cpar[0];
+ Float_t zr=zRear-2.-0.001;
+ cpar[0] = 1.0;
+ cpar[1] = zr * TMath::Tan(thetaR);
+ cpar[2] = zr * TMath::Tan(accMax);
+ cpar[3] = cpar[1] + TMath::Tan(thetaR) * 2;
+ cpar[4] = cpar[2] + TMath::Tan(accMax) * 2;
+ gMC->Gsvolu("ARPB", "CONE", idtmed[kPb], cpar, 5);
+ dz=(zRear-zAbsStart)/2.-cpar[0]-0.001;
gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
-
//
// concrete cone: concrete
//
- pcpar[9] = par[3]+(abs_l-d_rear-abs_d);
- pcpar[10] = (abs_l-d_rear) * TMath::Tan(acc_min);
- pcpar[11] = (abs_l-d_rear) * TMath::Tan(acc_max);
- gMC->Gsvolu("ACON", "PCON", idtmed[1616], pcpar, 12);
+ pcpar[9] = pcpar[3]+(zRear-dRear-zAbsStart);
+ pcpar[10] = (zRear-dRear) * TMath::Tan(accMin);
+ pcpar[11] = (zRear-dRear) * TMath::Tan(accMax);
+ gMC->Gsvolu("ACON", "PCON", idtmed[kConcrete+40], pcpar, 12);
gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
//
// carbon cone: carbon
//
- pcpar[9] = pcpar[3]+(abs_cc-abs_d);
- pcpar[10] = abs_cc * TMath::Tan(acc_min);
- pcpar[11] = abs_cc * TMath::Tan(acc_max);
- gMC->Gsvolu("ACAR", "PCON", idtmed[1605], pcpar, 12);
+ pcpar[9] = pcpar[3]+(zAbsCc-zAbsStart);
+ pcpar[10] = zAbsCc * TMath::Tan(accMin);
+ pcpar[11] = zAbsCc * TMath::Tan(accMax);
+ gMC->Gsvolu("ACAR", "PCON", idtmed[kC+40], pcpar, 12);
gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
+ //
+ // carbon cone outer region
+ //
+ cpar[0] = 10.;
+ cpar[1] = rAbs;
+ cpar[2] = zAbsStart* TMath::Tan(accMax);
+ cpar[3] = rAbs;
+ cpar[4] = cpar[2]+2. * cpar[0] * TMath::Tan(accMax);
+
+ gMC->Gsvolu("ACAO", "CONE", idtmed[kC], cpar, 5);
+ dz=-(zRear-zAbsStart)/2.+cpar[0];
+ gMC->Gspos("ACAO", 1, "ACAR", 0., 0., dz, 0, "ONLY");
//
// inner W shield
- zr=abs_l-d_rear;
- cpar[0] = d_rear/2.;
- cpar[1] = zr * TMath::Tan(acc_min);
- cpar[2] = zr * TMath::Tan(theta_r);
- cpar[3] = cpar[1] + TMath::Tan(acc_min) * 35;
- cpar[4] = cpar[2] + TMath::Tan(theta_r) * 35;
- gMC->Gsvolu("ARW0", "CONE", idtmed[1611], cpar, 5);
- dz=(abs_l-abs_d)/2.-cpar[0];
+ Float_t epsi=0.;
+ Float_t repsi=1.;
+
+ zr=zRear-(dRear-epsi);
+ cpar[0] = (dRear-epsi)/2.;
+ cpar[1] = zr * TMath::Tan(accMin);
+ cpar[2] = zr * TMath::Tan(thetaR*repsi);
+ cpar[3] = cpar[1] + TMath::Tan(accMin) * (dRear-epsi);
+ cpar[4] = cpar[2] + TMath::Tan(thetaR*repsi) * (dRear-epsi);
+ gMC->Gsvolu("ARW0", "CONE", idtmed[kNiCuW+40], cpar, 5);
+ dz=(zRear-zAbsStart)/2.-cpar[0];
gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
//
// special W medium for last 5 cm of W
- zr=abs_l-5;
+ zr=zRear-5;
cpar[0] = 2.5;
- cpar[1] = zr * TMath::Tan(acc_min);
- cpar[2] = zr * TMath::Tan(theta_r);
- cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5.;
- cpar[4] = cpar[2] + TMath::Tan(theta_r) * 5.;
- gMC->Gsvolu("ARW1", "CONE", idtmed[1631], cpar, 5);
- dz=d_rear/2.-cpar[0];
+ cpar[1] = zr * TMath::Tan(accMin);
+ cpar[2] = zr * TMath::Tan(thetaR*repsi);
+ cpar[3] = cpar[1] + TMath::Tan(accMin) * 5.;
+ cpar[4] = cpar[2] + TMath::Tan(thetaR*repsi) * 5.;
+ gMC->Gsvolu("ARW1", "CONE", idtmed[kNiCuW+20], cpar, 5);
+ dz=(dRear-epsi)/2.-cpar[0];
gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
//
// PolyEthylene Layers
- Float_t dr_min=TMath::Tan(theta_r) * 5;
- Float_t dr_max=TMath::Tan(acc_max) * 5;
- gMC->Gsvolu("ARPE", "CONE", idtmed[1617], cpar, 0);
+ Float_t drMin=TMath::Tan(thetaR) * 5;
+ Float_t drMax=TMath::Tan(accMax) * 5;
+ gMC->Gsvolu("ARPE", "CONE", idtmed[kPolyCH2], cpar, 0);
cpar[0]=2.5;
- for (Int_t i=0; i<3; i++) {
- zr=abs_l-d_rear+5+i*10.;
- cpar[1] = zr * TMath::Tan(theta_r);
- cpar[2] = zr * TMath::Tan(acc_max);
- cpar[3] = cpar[1] + dr_min;
- cpar[4] = cpar[2] + dr_max;
- dz=(abs_l-abs_d)/2.-cpar[0]-5.-(2-i)*10;
- gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
- }
+ { // Begin local scope for i
+ for (Int_t i=0; i<3; i++) {
+ zr=zRear-dRear+5+i*10.;
+ cpar[1] = zr * TMath::Tan(thetaR);
+ cpar[2] = zr * TMath::Tan(accMax);
+ cpar[3] = cpar[1] + drMin;
+ cpar[4] = cpar[2] + drMax;
+ dz=(zRear-zAbsStart)/2.-cpar[0]-5.-(2-i)*10;
+ gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
+ }
+ } // End local scope for i
gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");
- dz = (abs_l-abs_d)/2.+abs_d;
+ dz = (zRear-zAbsStart)/2.+zAbsStart;
gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
//
//
//
//
// cylindrical piece
- tpar0[2]=(abs_c-abs_d)/2;
- tpar0[0]=r_vacu;
- tpar0[1]=r_abs;
- gMC->Gsvolu("AV11", "TUBE", idtmed[1658], tpar0, 3);
+ tpar0[2]=(zOpen-zAbsStart)/2;
+ tpar0[0]=rVacu;
+ tpar0[1]=rAbs;
+ gMC->Gsvolu("AV11", "TUBE", idtmed[kSteel+40], tpar0, 3);
//
// insulation
+
tpar[2]=tpar0[2];
- tpar[0]=tpar0[0]+d_tube;
- tpar[1]=tpar0[0]+d_tube+d_insu;
- gMC->Gsvolu("AI11", "TUBE", idtmed[1653], tpar, 3);
+ tpar[0]=rVacu+dTube;
+ tpar[1]=tpar[0]+dInsu;
+ gMC->Gsvolu("AI11", "TUBE", idtmed[kInsulation+40], tpar, 3);
gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY");
//
-// clearance
- tpar[0]=tpar0[1]-d_prot-d_free;
- tpar[1]=tpar0[1]-d_prot;
- gMC->Gsvolu("AP11", "TUBE", idtmed[1655], tpar, 3);
+// clearance
+ tpar[0]=tpar[1]+dEnve;
+ tpar[1]=tpar[0]+dFree;
+ gMC->Gsvolu("AP11", "TUBE", idtmed[kAir+40], tpar, 3);
gMC->Gspos("AP11", 1, "AV11", 0., 0., 0., 0, "ONLY");
-
- dz=-(abs_l-abs_d)/2.+tpar0[2];
+//
+ dz=-(zRear-zAbsStart)/2.+tpar0[2];
gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY");
-
//
// conical piece
- cpar0[0]=(abs_l-d_rear-abs_c)/2;
- cpar0[1]=r_vacu;
- cpar0[2]=r_abs;
- cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open1);
- cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open1);
- gMC->Gsvolu("AV21", "CONE", idtmed[1658], cpar0, 5);
+
+ cpar0[0]=(zRear-dRear-zOpen)/2;
+ cpar0[1]=rVacu-0.05;
+ cpar0[2]=rAbs;
+ Float_t dR=2.*cpar0[0]*TMath::Tan(thetaOpen1);
+ cpar0[3]=cpar0[1]+dR;
+ cpar0[4]=cpar0[2]+dR;
+ gMC->Gsvolu("AV21", "CONE", idtmed[kSteel+40], cpar0, 5);
+ dTube+=0.05;
+
//
// insulation
cpar[0]=cpar0[0];
- cpar[1]=cpar0[1]+d_tube;
- cpar[2]=cpar0[1]+d_tube+d_insu;
- cpar[3]=cpar0[3]+d_tube;
- cpar[4]=cpar0[3]+d_tube+d_insu;
- gMC->Gsvolu("AI21", "CONE", idtmed[1653], cpar, 5);
+ cpar[1]=cpar0[1]+dTube;
+ cpar[2]=cpar0[1]+dTube+dInsu;
+ cpar[3]=cpar0[3]+dTube;
+ cpar[4]=cpar0[3]+dTube+dInsu;
+ gMC->Gsvolu("AI21", "CONE", idtmed[kInsulation+40], cpar, 5);
gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY");
//
// clearance
- cpar[1]=cpar0[2]-d_prot-d_free;
- cpar[2]=cpar0[2]-d_prot;
- cpar[3]=cpar0[4]-d_prot-d_free;
- cpar[4]=cpar0[4]-d_prot;
- gMC->Gsvolu("AP21", "CONE", idtmed[1655], cpar, 5);
+ cpar[1]=cpar0[1]+dTube+dInsu+dEnve;
+ cpar[2]=rAbs;
+ cpar[3]=cpar0[1]+dTube+dInsu+dEnve+dR;
+ cpar[4]=rAbs+dR;
+
+ gMC->Gsvolu("AP21", "CONE", idtmed[kAir+40], cpar, 5);
gMC->Gspos("AP21", 1, "AV21", 0., 0., 0., 0, "ONLY");
- dz=(abs_l-abs_d)/2.-cpar0[0]-d_rear;
+ dz=(zRear-zAbsStart)/2.-cpar0[0]-dRear;
gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY");
-
}
//_____________________________________________________________________________
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff