+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/*
+$Log$
+Revision 1.10 1999/10/14 16:52:08 fca
+Only use PDG codes and not GEANT ones
+
+Revision 1.9 1999/10/08 06:27:23 fca
+Corrected bug in the HV degrader geometry, thanks to G.Tabary
+
+Revision 1.8 1999/10/04 13:39:55 fca
+Correct array index problem
+
+Revision 1.7 1999/09/29 09:24:34 fca
+Introduction of the Copyright and cvs Log
+
+*/
+
///////////////////////////////////////////////////////////////////////////////
// //
// Time Projection Chamber version 3 -- detailed TPC and slow simulation //
#include "AliTPCv3.h"
#include "AliRun.h"
#include "AliConst.h"
+#include "AliTPCD.h"
+#include "AliTPCParam.h"
+#include "AliPDG.h"
ClassImp(AliTPCv3)
void AliTPCv3::CreateGeometry()
{
//
- // Create the geometry of Time Projection Chamber version 3
+ // Creation of the TPC coarse geometry (version 0)
+ // Origin Marek Kowalski Crakow
//
//Begin_Html
/*
- <img src="picts/AliTPCv3.gif">
+ <img src="picts/AliTPCv0.gif">
*/
//End_Html
//Begin_Html
/*
- <img src="picts/AliTPCv3Tree.gif">
+ <img src="picts/AliTPCv0Tree.gif">
*/
//End_Html
- Int_t *idtmed = fIdtmed->GetArray()-399;
+ AliTPCParam * fTPCParam = &(fDigParam->GetParam());
+
+ Int_t *idtmed = fIdtmed->GetArray();
+
+ Float_t dm[21];
+ Int_t idrotm[120];
+
+ Int_t nRotMat = 0;
+
- Float_t tana, rlsl, wlsl, rssl, rlsu, wssl, wlsu,
- rssu, wssu, alpha, x, y, sec_thick;
-
- Float_t x1, z0, z1, x2, theta1, theta2, theta3, dm[21];
- Int_t il, iu;
- Float_t z_side;
- Int_t idrotm[100];
-
- Float_t x0l, x0u;
- Int_t idr;
- //Float_t thl, thu;
- Float_t opl, opu, phi1, phi2, phi3;
-
// ----------------------------------------------------
- // FIELD CAGE WITH ENDCAPS - CARBON FIBER
+ // FIELD CAGE WITH ENDCAPS - G10
// THIS IS ALSO A TPC MOTHER VOLUME
// ----------------------------------------------------
+
dm[0] = 76.;
dm[1] = 278.;
dm[2] = 275.;
-
- gMC->Gsvolu("TPC ", "TUBE", idtmed[407], dm, 3);
- // -------------------------------------------------------
- // drift gas Ne/CO2 (90/10 volume) - sensitive
- // field cage thickness = 0.52% X0
- // ----------------------------------------------------
- dm[0] = 76.+0.09776;
- dm[1] = 257.;
+
+ gMC->Gsvolu("TPC ", "TUBE", idtmed[8], dm, 3);
+
+ //-----------------------------------------------------
+ // Endcap cover c-fibre 0.86% X0
+ //-----------------------------------------------------
+
+ dm[0] = 78.;
+ dm[1] = 258.;
+ dm[2] = 0.95;
+
+ gMC->Gsvolu("TPEC","TUBE",idtmed[10],dm,3);
+
+ //-----------------------------------------------------
+ // Drift gas , leave 2 cm at the outer radius
+ // and inner raddius
+ //-----------------------------------------------------
+
+ dm[0] = 78.;
+ dm[1] = 258.;
dm[2] = 250.;
- gMC->Gsvolu("TGAS", "TUBE", idtmed[403], dm, 3);
- // ------------------------------------------------------
- // "side" gas volume (the same as drift gas)
- // here the readout chambers are positioned
- // ------------------------------------------------------
- dm[2] = 0.5*(275.-250.);
- z_side = dm[2];
-
- gMC->Gsvolu("TPSG", "TUBE", idtmed[401], dm, 3);
- // ------------------------------------------------------
- // HV midplane - 20 microns of mylar
- // -----------------------------------------------------
- dm[2] = .001;
-
- gMC->Gsvolu("TPHV", "TUBE", idtmed[405], dm, 3);
-
- // ====================================================
- // lower and upper readout chambers
- // ====================================================
- // sectros opening angles in degrees
- // ---------------------------------------------------
- opl = 30.;
- opu = 15.;
- //thl = TMath::Tan(opl * .5 * kDegrad);
- //thu = TMath::Tan(opu * .5 * kDegrad);
- // ---------------------------------------------------
- // S and L-sectors radii
- // ---------------------------------------------------
- rssl = 88.;
- rssu = 136.;
- rlsl = 142.;
- rlsu = 250.;
- // --------------------------------------------------
- // Sectors widths
- // --------------------------------------------------
- wssl = 46.5;
- wssu = 72.2;
- wlsl = 37.;
- wlsu = 65.4;
- // ---------------------------------------------------
- // Sector thickness 25% of X0 (Al)
- // ---------------------------------------------------
- sec_thick = 2.225;
- // ---------------------------------------------------
- // S-sectors readout chambers (lower sectors)
- // ---------------------------------------------------
- dm[0] = wssl * .5;
- dm[1] = wssu * .5;
- dm[2] = sec_thick * .5;
- dm[3] = (rssu - rssl) * .5;
-
- x0l = rssl + dm[3];
-
- gMC->Gsvolu("TRCS", "TRD1", idtmed[399], dm, 4);
- // ---------------------------------------------------
- // L-sectors readout chambers (upper sectors)
- // ---------------------------------------------------
- dm[0] = wlsl * .5;
- dm[1] = wlsu * .5;
- dm[2] = sec_thick * .5;
- dm[3] = (rlsu - rlsl) * .5;
-
- x0u = rlsl + dm[3];
-
- gMC->Gsvolu("TRCL", "TRD1", idtmed[399], dm, 4);
- // ----------------------------------------------------
- // positioning of the S-sector readout chambers
- // rotation matices 1-12
- // ----------------------------------------------------
- z1 = -z_side + sec_thick * .5;
+ gMC->Gsvolu("TGAS", "TUBE", idtmed[4], dm, 3);
- for (il = 1; il <= 12; ++il) {
- phi1 = (il - 1) * opl + 270.;
- if (phi1 > 360.) {
- phi1 += -360.;
- }
+
+ //------------------------------------------------------
+ // membrane holder - carbon fiber
+ //------------------------------------------------------
+
+
+ gMC->Gsvolu("TPMH","TUBE",idtmed[6],dm,0);
+
+ dm[0] = 252.;
+ dm[1] = 258.;
+ dm[2] = 0.2;
+
+ gMC->Gsposp("TPMH",1,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
+
+ dm[0] = 78.;
+ dm[1] = 82.;
+ dm[2] = 0.1;
+
+ gMC->Gsposp("TPMH",2,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
+
+ //----------------------------------------------------------
+ // HV membrane - 25 microns of mylar
+ //----------------------------------------------------------
+
+ dm[0] = 82.;
+ dm[1] = 252.;
+ dm[2] = 0.00125;
+
+ gMC->Gsvolu("TPHV","TUBE",idtmed[5],dm,3);
+
+ gMC->Gspos("TPHV",1,"TGAS",0.,0.,0.,0,"ONLY");
+
+ gMC->Gspos("TGAS",1,"TPC ",0.,0.,0.,0,"ONLY");
+
+ //----------------------------------------------------------
+ // "side" gas volume, the same as the drift gas
+ // the readout chambers are placed there.
+ //----------------------------------------------------------
+
+ dm[0] = 78.;
+ dm[1] = 258.;
+ dm[2] = 0.5*(275. - 250.);
+
+ gMC->Gsvolu("TPSG", "TUBE", idtmed[2], dm, 3);
+
+ Float_t z_side = dm[2]; // 1/2 of the side gas thickness
+
+ //-----------------------------------------------------------
+ // Readout chambers , 25% of X0, I use Al as the material
+ //-----------------------------------------------------------
+
+ Float_t InnerOpenAngle = fTPCParam->GetInnerAngle();
+ Float_t OuterOpenAngle = fTPCParam->GetOuterAngle();
+
+ Float_t InnerAngleShift = fTPCParam->GetInnerAngleShift();
+ Float_t OuterAngleShift = fTPCParam->GetOuterAngleShift();
+
+
+ Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
+ Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
+
+
+ Float_t InSecLowEdge = fTPCParam->GetInSecLowEdge();
+ Float_t InSecUpEdge = fTPCParam->GetInSecUpEdge();
+
+ Float_t OuSecLowEdge = fTPCParam->GetOuSecLowEdge();
+ Float_t OuSecUpEdge = fTPCParam->GetOuSecUpEdge();
+
+ Float_t SecThick = 2.225; // Al
+
+ Float_t edge = fTPCParam->GetEdge();
+
+ // S (Inner) sectors
+
+ dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-edge;
+ dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-edge;
+ dm[2] = SecThick;
+ dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
+
+ Float_t xCenterS = InSecLowEdge+dm[3];
+
+ gMC->Gsvolu("TRCS", "TRD1", idtmed[0], dm, 4);
+
+ // L (Outer) sectors
+
+ dm[0] = OuSecLowEdge*TMath::Tan(0.5*OuterOpenAngle)-edge;
+ dm[1] = OuSecUpEdge*TMath::Tan(0.5*OuterOpenAngle)-edge;
+ dm[2] = SecThick;
+ dm[3] = 0.5*(OuSecUpEdge-OuSecLowEdge);
+
+ Float_t xCenterL = OuSecLowEdge+dm[3];
+
+ gMC->Gsvolu("TRCL", "TRD1", idtmed[0], dm, 4);
+
+ Float_t z1 = -z_side + SecThick*0.5;
+
+ //------------------------------------------------------------------
+ // Positioning of the S-sector readout chambers
+ //------------------------------------------------------------------
+
+ Int_t ns;
+ Float_t theta1,theta2,theta3;
+ Float_t phi1,phi2,phi3;
+ Float_t alpha;
+ Float_t x,y;
+
+ for(ns=0;ns<nInnerSector;ns++){
+
+ phi1 = ns * InnerOpenAngle + 270.*kDegrad + InnerAngleShift;
+ phi1 *= kRaddeg; // in degrees
+
+ phi1 = (Float_t)TMath::Nint(phi1);
+
+ if (phi1 > 360.) phi1 -= 360.;
+
theta1 = 90.;
phi2 = 90.;
theta2 = 180.;
- phi3 = (il - 1) * opl;
+ phi3 = ns * InnerOpenAngle + InnerAngleShift;
+ phi3 *= kRaddeg; // in degrees
+
+ phi3 = (Float_t)TMath::Nint(phi3);
+
+ if(phi3 > 360.) phi3 -= 360.;
+
theta3 = 90.;
+
+ alpha = phi3*kDegrad;
+
+ x = xCenterS * TMath::Cos(alpha);
+ y = xCenterS * TMath::Sin(alpha);
+
+ AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
+
+ gMC->Gspos("TRCS", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
+
+ nRotMat++;
+
+ }
- idr = il;
+ //-------------------------------------------------------------------
+ // Positioning of the L-sectors readout chambers
+ //-------------------------------------------------------------------
- alpha = (il - 1) * opl * kDegrad;
- x = x0l * TMath::Cos(alpha);
- y = x0l * TMath::Sin(alpha);
+ for(ns=0;ns<nOuterSector;ns++){
+ phi1 = ns * OuterOpenAngle + 270.*kDegrad + OuterAngleShift;
+ phi1 *= kRaddeg; // in degrees
+
+ phi1 = (Float_t)TMath::Nint(phi1);
- AliMatrix(idrotm[idr], theta1, phi1, theta2, phi2, theta3, phi3);
- gMC->Gspos("TRCS", il, "TPSG", x, y, z1, idrotm[idr], "ONLY");
- }
- // ----------------------------------------------------
- // positioning of the L-sector readout chambers
- // rotation matices 13-36
- // ----------------------------------------------------
- for (iu = 1; iu <= 24; ++iu) {
- phi1 = (iu - 1) * opu + 270.;
- if (phi1 > 360.) {
- phi1 += -360.;
- }
+
+ if (phi1 > 360.) phi1 -= 360.;
+
theta1 = 90.;
phi2 = 90.;
theta2 = 180.;
- phi3 = (iu - 1) * opu;
+ phi3 = ns * OuterOpenAngle+OuterAngleShift;
+ phi3 *= kRaddeg; // in degrees
+
+ phi3 = (Float_t)TMath::Nint(phi3);
+
+
+ if(phi3 > 360.) phi3 -= 360.;
+
theta3 = 90.;
-
- idr = iu + 12;
- AliMatrix(idrotm[idr], theta1, phi1, theta2, phi2, theta3, phi3);
-
- alpha = (iu - 1) * opu * kDegrad;
- x = x0u * TMath::Cos(alpha);
- y = x0u * TMath::Sin(alpha);
-
- gMC->Gspos("TRCL", iu, "TPSG", x, y, z1, idrotm[idr], "ONLY");
+
+ alpha = phi3*kDegrad;
+
+ x = xCenterL * TMath::Cos(alpha);
+ y = xCenterL * TMath::Sin(alpha);
+
+ AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
+
+
+ gMC->Gspos("TRCL", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
+
+ nRotMat++;
+
}
- // --------------------------------------------------------
- // Spoke wheel structures
- // --------------------------------------------------------
- gMC->Gsvolu("TSWS", "TUBE", idtmed[399], dm, 0);
-
- z0 = -z_side + 2.;
-
- dm[0] = 82.;
- dm[1] = 86.;
- dm[2] = 1.;
-
- gMC->Gsposp("TSWS", 1, "TPSG", 0, 0, z0, 0, "ONLY", dm, 3);
-
- dm[0] = 253.;
- dm[1] = 257.;
-
- gMC->Gsposp("TSWS", 2, "TPSG", 0, 0, z0, 0, "ONLY", dm, 3);
-
- dm[0] = 140.9;
- dm[1] = 141.9;
-
- gMC->Gsposp("TSWS", 3, "TPSG", 0, 0, z0, 0, "ONLY", dm, 3);
-
- // -------------------------------------------------------
- // this volumes are to avoid overlaping
- // -------------------------------------------------------
- z0 = 253.;
-
- dm[0] = 76.;
- dm[1] = 76.+0.09776;
-
- gMC->Gsposp("TSWS", 4, "TPC ", 0, 0, z0, 0, "ONLY", dm, 3);
- gMC->Gsposp("TSWS", 5, "TPC ", 0, 0, -z0,0, "ONLY", dm, 3);
-
- z0 += 21.;
-
- gMC->Gsposp("TSWS", 6, "TPC ", 0, 0, z0, 0, "ONLY", dm, 3);
- gMC->Gsposp("TSWS", 7, "TPC ", 0, 0, -z0, 0, "ONLY", dm, 3);
-
- dm[0] = 257.;
- dm[1] = 257.+0.09776;
- dm[2] = 11.5;
-
- z0 = 263.5;
-
- gMC->Gsposp("TSWS", 8, "TPC ", 0, 0, z0, 0, "ONLY", dm, 3);
- gMC->Gsposp("TSWS", 9, "TPC ", 0, 0, -z0, 0, "ONLY", dm, 3);
+
+ Float_t z0 = z_side - 0.95;
+
+ gMC->Gspos("TPEC",1,"TPSG",0.,0.,z0,0,"ONLY");
+
// ==========================================================
// wheels
// ==========================================================
+
+ //
+ // auxilary structures
+ //
+
+
+ gMC->Gsvolu("TPWI","TUBE",idtmed[24],dm,0); // "air"
+
// ----------------------------------------------------------
// Large wheel -> positioned in the TPC
// ----------------------------------------------------------
- dm[0] = 257.+0.09776;
+
+
+ z0 = 263.5; // TPC length - 1/2 spoke wheel width
+
+ dm[0] = 258.;
dm[1] = 278.;
dm[2] = 11.5;
- gMC->Gsvolu("TPW1", "TUBE", idtmed[399], dm, 3);
- dm[0] = 259.;
+ gMC->Gsvolu("TPWL", "TUBE", idtmed[0], dm, 3);
+
+ dm[0] = dm[0]+2.;
+ dm[1] = 278.;
+ dm[2] = dm[2]-2.;
+
+ gMC->Gsposp("TPWI",1,"TPWL",0.,0.,0.,0,"ONLY",dm,3);
+
+ gMC->Gspos("TPWL", 1, "TPC ", 0, 0, z0, 0, "ONLY");
+ gMC->Gspos("TPWL", 2, "TPC ", 0, 0, -z0, 0, "ONLY");
+
+ //
+ // Outer vessel + CO2 HV degrader
+ //
+
+ dm[0] = 260.;
+ dm[1] = 278.;
+ dm[2] = 252.;
+
+ gMC->Gsvolu("TPCO","TUBE",idtmed[12],dm,3);
+
+ dm[0] = 275.;
dm[1] = 278.;
- dm[2] = 9.5;
-
- gMC->Gsvolu("TPW2", "TUBE", idtmed[498], dm, 3);
-
- gMC->Gspos("TPW2", 1, "TPW1", 0, 0, 0, 0, "ONLY");
- gMC->Gspos("TPW1", 1, "TPC ", 0, 0, z0, 0, "ONLY");
- gMC->Gspos("TPW1", 2, "TPC ", 0, 0, -z0, 0, "ONLY");
- // -----------------------------------------------------------
- // Small wheel -> positioned in the TPSG
- // -----------------------------------------------------------
- dm[0] = 76.+0.09776;
+ gMC->Gsvolu("TPOV","TUBE",idtmed[10],dm,3);
+
+ gMC->Gspos("TPOV",1,"TPCO",0.,0.,0.,0,"ONLY");
+
+
+ // G10 plugs
+
+ dm[0] = 258.;
+ dm[1] = 260.;
+ dm[2] = 1.;
+
+ gMC->Gsvolu("TPG1","TUBE",idtmed[8],dm,3);
+ gMC->Gspos("TPG1",1,"TPCO",0.,0.,251.,0,"ONLY");
+ gMC->Gspos("TPG1",2,"TPCO",0.,0.,-251.,0,"ONLY");
+
+ gMC->Gspos("TPCO",1,"TPC ",0.,0.,0.,0,"ONLY");
+
+
+ //----------------------------------------------------------
+ // Small wheel -> positioned in "side gas
+ //----------------------------------------------------------
+
+ dm[0] = 78.;
dm[1] = 82.;
dm[2] = 11.5;
+
+ gMC->Gsvolu("TPWS", "TUBE", idtmed[0], dm, 3);
+
+ dm[0] = 78.;
+ dm[1] = dm[1]-2;
+ dm[2] = dm[2]-2.;
+
+ gMC->Gsvolu("TPW1", "TUBE", idtmed[2], dm, 3);
- gMC->Gsvolu("TPW3", "TUBE", idtmed[399], dm, 3);
-
- dm[0] = 76.+0.09776;
- dm[1] = 80.;
+ gMC->Gspos("TPW1", 1, "TPWS", 0., 0., 0., 0, "ONLY");
+
+ z0 = 1.; // spoke wheel is shifted w.r.t. center of the "side gas"
+
+ gMC->Gspos("TPWS", 1, "TPSG", 0, 0, z0, 0, "ONLY");
+
+
+ // to avoid overlaps
+
+ dm[0] = 76.;
+ dm[1] = 78.;
+ dm[2] = 11.5;
+
+ gMC->Gsvolu("TPS1","TUBE",idtmed[0],dm,3);
+
dm[2] = 9.5;
+
+ gMC->Gsvolu("TPS2","TUBE",idtmed[24],dm,3);
+
+ gMC->Gspos("TPS2",1,"TPS1",0.,0.,0.,0,"ONLY");
+
+ z0= 263.5;
- gMC->Gsvolu("TPW4", "TUBE", idtmed[401], dm, 3);
-
- gMC->Gspos("TPW4", 1, "TPW3", 0, 0, 0, 0, "ONLY");
-
- z0 = 1.;
-
- gMC->Gspos("TPW3", 1, "TPSG", 0, 0, z0, 0, "ONLY");
- // ---------------------------------------------------------
- // spokes, inner and outer, also the inner ring
- // ---------------------------------------------------------
- dm[0] = 0.5*(135.9-82.1);
- dm[1] = 3.;
- dm[2] = 2.;
-
- x1 = dm[0] + 82.;
-
- gMC->Gsvolu("TSPI", "BOX ", idtmed[399], dm, 3);
-
- dm[1] = 2.;
+ gMC->Gspos("TPS1",1,"TPC ",0.,0.,z0,0,"ONLY");
+ gMC->Gspos("TPS1",2,"TPC ",0.,0.,-z0,0,"ONLY");
+
+ // G10 plug
+
+ dm[0] = 76.;
+ dm[1] = 78.;
dm[2] = 1.;
-
- gMC->Gsvolu("TSP1", "BOX ", idtmed[498], dm, 3);
- gMC->Gspos("TSP1", 1, "TSPI", 0, 0, 0, 0, "ONLY");
-
- dm[0] = 0.5*(256.9-142.1);
- dm[1] = 3.;
+ gMC->Gsvolu("TPG2","TUBE",idtmed[8],dm,3);
+
+ z0 = 251.;
+
+ gMC->Gspos("TPG2",1,"TPC ",0.,0.,z0,0,"ONLY");
+ gMC->Gspos("TPG2",2,"TPC ",0.,0.,-z0,0,"ONLY");
+
+
+ //---------------------------------------------------------
+ // central wheel 6 (radial direction) x 4 (along z) cm2
+ //---------------------------------------------------------
+
+ dm[0] = 140.;
+ dm[1] = 146.;
dm[2] = 2.;
-
- x2 = dm[0] + 142.;
-
- gMC->Gsvolu("TSPO", "BOX ", idtmed[399], dm, 3);
-
- dm[1] = 2.;
- dm[2] = 1.;
-
- gMC->Gsvolu("TSP2", "BOX ", idtmed[498], dm, 3);
-
- gMC->Gspos("TSP2", 1, "TSPO", 0, 0, 0, 0, "ONLY");
- // --------------------------------------------------------
- dm[0] = 136.;
- dm[1] = 142.;
+
+ gMC->Gsvolu("TPWC","TUBE",idtmed[0],dm,3);
+
+ dm[0] = dm[0] + 2.;
+ dm[1] = dm[1] - 2.;
+ dm[2] = dm[2] - 1.;
+
+ gMC->Gsposp("TPWI",2,"TPWC",0.,0.,0.,0,"ONLY",dm,3);
+
+ z0 = z_side - 1.9 - 2.;
+
+ gMC->Gspos("TPWC",1,"TPSG",0.,0.,z0,0,"ONLY");
+
+ //
+
+ gMC->Gsvolu("TPSE","BOX ",idtmed[24],dm,0); // "empty" part of the spoke
+
+
+ //---------------------------------------------------------
+ // inner spokes (nSectorInner)
+ //---------------------------------------------------------
+
+ dm[0] = 0.5*(139.9-82.1);
+ dm[1] = 3.;
dm[2] = 2.;
-
- gMC->Gsvolu("TSWH", "TUBE", idtmed[399], dm, 3);
-
- dm[0] = 137.;
- dm[1] = 141.;
- dm[2] = 1.;
-
- gMC->Gsvolu("TSW1", "TUBE", idtmed[498], dm, 3);
-
- gMC->Gspos("TSW1", 1, "TSWH", 0, 0, 0, 0, "ONLY");
-
- z0 = z_side - .16168 - 2.;
- // --------------------------------------------------------
- gMC->Gspos("TSWH", 1, "TPSG", 0, 0, z0, 0, "ONLY");
- // -------------------------------------------------------
- // posiioning of the inner spokes
- // -------------------------------------------------------
- for (il = 1; il <= 6; ++il) {
- phi1 = opl * .5 + (il - 1) * 2. * opl;
- theta1 = 90.;
- phi2 = opl * .5 + 90. + (il - 1) * 2. * opl;
- if (phi2 > 360.) {
- phi2 += -360.;
- }
- theta2 = 90.;
- phi3 = 0.;
- theta3 = 0.;
-
+
+ Float_t x1 = dm[0]+82.;
+
+ gMC->Gsvolu("TPSI","BOX",idtmed[0],dm,3);
+
+ dm[1] = dm[1]-1.;
+ dm[2] = dm[2]-1.;
+
+ gMC->Gsposp("TPSE",1,"TPSI",0.,0.,0.,0,"ONLY",dm,3);
+
+ for(ns=0;ns<nInnerSector;ns++){
+
+ phi1 = 0.5*InnerOpenAngle + ns*InnerOpenAngle + InnerAngleShift;
+ theta1=90.;
+ phi1 *=kRaddeg;
+
+ phi1 = (Float_t)TMath::Nint(phi1);
+
+ phi2 = phi1+90.;
+ if(phi2>360.) phi2 -= 360.;
+ theta2=90.;
+ phi3=0.;
+ theta3=0.;
+
alpha = phi1 * kDegrad;
x = x1 * TMath::Cos(alpha);
- y = x1 * TMath::Sin(alpha);
-
- idr = il + 36;
-
- AliMatrix(idrotm[idr], theta1, phi1, theta2, phi2, theta3, phi3);
- gMC->Gspos("TSPI", il, "TPSG", x, y, z0, idrotm[idr], "ONLY");
-
+ y = x1 * TMath::Sin(alpha);
+
+ AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
+
+ gMC->Gspos("TPSI",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
+
+ nRotMat++;
+
}
-
- for (iu = 1; iu <= 12; ++iu) {
- phi1 = opu * .5 + (iu - 1) * 2. * opu;
- theta1 = 90.;
- phi2 = opu * .5 + 90. + (iu - 1) * 2. * opu;
- if (phi2 > 360.) {
- phi2 += -360.;
- }
- theta2 = 90.;
- phi3 = 0.;
- theta3 = 0.;
-
+
+ //-------------------------------------------------------------
+ // outer spokes (nSectorOuter)
+ //-------------------------------------------------------------
+
+ dm[0] = 0.5*(257.9-146.1);
+ dm[1] = 3.;
+ dm[2] = 2.;
+
+ x1 = dm[0] + 146.;
+
+ gMC->Gsvolu("TPSO","BOX ",idtmed[0],dm,3);
+
+ dm[1] = dm[1] - 1.;
+ dm[2] = dm[2] - 1.;
+
+ gMC->Gsposp("TPSE",2,"TPSO",0.,0.,0.,0,"ONLY",dm,3);
+
+ for(ns=0;ns<nOuterSector;ns++){
+
+ phi1 = 0.5*OuterOpenAngle + ns*OuterOpenAngle + OuterAngleShift;
+ theta1=90.;
+ phi1 *=kRaddeg;
+
+ phi1 = (Float_t)TMath::Nint(phi1);
+
+ phi2 = phi1+90.;
+ if(phi2>360.) phi2 -= 360.;
+ theta2=90.;
+ phi3=0.;
+ theta3=0.;
+
alpha = phi1 * kDegrad;
- x = x2 * TMath::Cos(alpha);
- y = x2 * TMath::Sin(alpha);
-
- idr = iu + 42;
-
- AliMatrix(idrotm[idr], theta1, phi1, theta2, phi2, theta3, phi3);
- gMC->Gspos("TSPO", iu, "TPSG", x, y, z0, idrotm[idr], "ONLY");
- }
- // --------------------------------------------------------
- // endcap cover (C, 0.86% X0)
- // --------------------------------------------------------
- dm[0] = 76.+0.09776;
- dm[1] = 257.;
- dm[2] = 0.16168*0.5;
-
- gMC->Gsvolu("TCOV", "TUBE", idtmed[407], dm, 3);
+ x = x1 * TMath::Cos(alpha);
+ y = x1 * TMath::Sin(alpha);
+
+ AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
+
+ gMC->Gspos("TPSO",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
+
+ nRotMat++;
+
+ }
- z0 = z_side - dm[2];
+
- gMC->Gspos("TCOV", 1, "TPSG", 0, 0, z0, 0, "ONLY");
// --------------------------------------------------------
// put the readout chambers into the TPC
// --------------------------------------------------------
+
theta1 = 90.;
phi1 = 0.;
theta2 = 90.;
theta3 = 180.;
phi3 = 0.;
- AliMatrix(idrotm[55], theta1, phi1, theta2, phi2, theta3, phi3);
+ AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
z0 = z_side + 250.;
gMC->Gspos("TPSG", 1, "TPC ", 0, 0, z0, 0, "ONLY");
- gMC->Gspos("TPSG", 2, "TPC ", 0, 0, -z0, idrotm[55], "ONLY");
- // ---------------------------------------------------------
- // outer gas insulation (CO2)
- // ---------------------------------------------------------
- dm[0] = 257.+0.09776;
- dm[1] = 278.-0.25004;
- dm[2] = 275.-23.;
-
- gMC->Gsvolu("TPOI", "TUBE", idtmed[406], dm, 3);
-
- gMC->Gspos("TPHV", 1, "TGAS", 0, 0, 0, 0, "ONLY");
- gMC->Gspos("TGAS", 1, "TPC ", 0, 0, 0, 0, "ONLY");
- gMC->Gspos("TPOI", 1, "TPC ", 0, 0, 0, 0, "ONLY");
+ gMC->Gspos("TPSG", 2, "TPC ", 0, 0, -z0, idrotm[nRotMat], "ONLY");
gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
- // ======================================================
- // all volumes below are positioned in ALIC
- // ======================================================
- // ------------------------------------------------------
- // the last parts of the smaller wheel (TSWS)
- // ------------------------------------------------------
- dm[0] = 74.;
- dm[1] = 76.;
- dm[2] = 1.;
-
- z0 = 253.;
-
- gMC->Gsposp("TSWS", 10, "TPC ", 0, 0, z0, 0, "ONLY", dm, 3);
- gMC->Gsposp("TSWS", 11, "TPC ", 0, 0, -z0, 0, "ONLY", dm, 3);
-
- dm[0] = 70.;
-
- z0 += 21.;
-
- gMC->Gsposp("TSWS", 12, "TPC ", 0, 0, z0, 0, "ONLY", dm, 3);
- gMC->Gsposp("TSWS", 13, "TPC ", 0, 0, -z0, 0, "ONLY", dm, 3);
- // ----------------------------------------------------
- // Inner vessel (PCON)
- // This volume is to be positioned directly in ALIC
- // ----------------------------------------------------
+
+ //----------------------------------------------------
+ // Inner vessel and HV degrader
+ //----------------------------------------------------
+
dm[0] = 0.;
dm[1] = 360.;
dm[2] = 4.;
dm[3] = -250.;
- dm[4] = 75.;
+ dm[4] = 74.4;
dm[5] = 76.;
-
+
dm[6] = -64.5;
dm[7] = 50.;
dm[8] = 76.;
-
+
dm[9] = 64.5;
dm[10] = 50.;
dm[11] = 76.;
-
+
dm[12] = 250.;
- dm[13] = 75.;
+ dm[13] = 74.4;
dm[14] = 76.;
-
- gMC->Gsvolu("TPIV", "PCON", idtmed[407], dm, 15);
- // --------------------------------------------------------
- // fill the inner vessel with CO2, (HV kDegrader)
- // cone parts have different thickness
- // than the central barrel, according to the TP
- // --------------------------------------------------------
- tana = 75./185.5;
-
+
+ gMC->Gsvolu("TPVD", "PCON", idtmed[12], dm, 15); // CO2
+
+ // cone parts
+
dm[0] = 0.;
dm[1] = 360.;
- dm[2] = 6.;
-
- dm[3] = -(250.-0.2162);
- dm[4] = (185.5-0.2126)*tana+0.2126;
- dm[5] = 76-0.001;
-
- dm[6] = -64.5;
- dm[7] = 50.+0.2162;
- dm[8] = 76-0.001;
-
- dm[9] = -64.5;
- dm[10] = 50+0.05076;
- dm[11] = 76-0.001;
-
- dm[12] = 64.5;
- dm[13] = 50+0.05076;
- dm[14] = 76-0.001;
-
- dm[15] = 64.5;
- dm[16] = 50.+0.2162;
- dm[17] = 76-0.001;
-
- dm[18] = (250.-0.2162);
- dm[19] = (185.5-0.2126)*tana+0.2126;
- dm[20] = 76-0.001;
-
- gMC->Gsvolu("TPVD", "PCON", idtmed[406], dm, 21);
+ dm[2] = 2.;
+
+ dm[3] = 64.5;
+ dm[4] = 50.;
+ dm[5] = 51.6;
+
+ dm[6] = 250.;
+ dm[7] = 74.4;
+ dm[8] = 76.;
+
+
+ gMC->Gsvolu("TIVC","PCON",idtmed[11],dm,9); // C-fibre
+
+ gMC->Gspos("TIVC",1,"TPVD",0.,0.,0.,0,"ONLY");
+ gMC->Gspos("TIVC",2,"TPVD",0.,0.,0.,idrotm[nRotMat],"ONLY");
+
+ // barrel part
+
+ dm[0] = 50.;
+ dm[1] = 50.5;
+ dm[2] = 64.5;
+
+ gMC->Gsvolu("TIVB","TUBE",idtmed[9],dm,3);
+
+ gMC->Gspos("TIVB",1,"TPVD",0.,0.,0.,0,"ONLY");
+
+ gMC->Gspos("TPVD",1,"ALIC",0.,0.,0.,0,"ONLY");
+
- gMC->Gspos("TPVD", 1, "TPIV", 0, 0, 0, 0, "ONLY");
+
- gMC->Gspos("TPIV", 1, "ALIC", 0, 0, 0, 0, "ONLY");
+
// ---------------------------------------------------
// volumes ordering
// ---------------------------------------------------
gMC->Gsord("TPSG", 6);
-}
+
+} // end of function
+
//_____________________________________________________________________________
gMC->Gsatt("TGAS","SEEN",0);
gMC->Gsatt("TPSG","SEEN",0);
gMC->Gsatt("TPHV","SEEN",1);
+ gMC->Gsatt("TPMH","SEEN",1);
+ gMC->Gsatt("TPEC","SEEN",0);
gMC->Gsatt("TRCS","SEEN",1);
gMC->Gsatt("TRCL","SEEN",1);
- gMC->Gsatt("TSWS","SEEN",1);
+ gMC->Gsatt("TPWL","SEEN",1);
+ gMC->Gsatt("TPWI","SEEN",1);
+ gMC->Gsatt("TPWS","SEEN",1);
gMC->Gsatt("TPW1","SEEN",1);
- gMC->Gsatt("TPW2","SEEN",1);
- gMC->Gsatt("TPW3","SEEN",1);
- gMC->Gsatt("TPW4","SEEN",1);
- gMC->Gsatt("TSPI","SEEN",1);
- gMC->Gsatt("TSP1","SEEN",0);
- gMC->Gsatt("TSPO","SEEN",1);
- gMC->Gsatt("TSP2","SEEN",0);
- gMC->Gsatt("TSWH","SEEN",1);
- gMC->Gsatt("TSW1","SEEN",1);
- gMC->Gsatt("TPOI","SEEN",1);
- gMC->Gsatt("TPIV","SEEN",1);
+ gMC->Gsatt("TPS1","SEEN",1);
+ gMC->Gsatt("TPS2","SEEN",1);
+ gMC->Gsatt("TPG1","SEEN",1);
+ gMC->Gsatt("TPG2","SEEN",1);
+ gMC->Gsatt("TPWC","SEEN",1);
+ gMC->Gsatt("TPSI","SEEN",1);
+ gMC->Gsatt("TPSO","SEEN",1);
+ gMC->Gsatt("TPCO","SEEN",1);
+ gMC->Gsatt("TPOV","SEEN",1);
gMC->Gsatt("TPVD","SEEN",1);
//
gMC->Gdopt("hide", "on");
Float_t ptot=mom.Rho();
Float_t beta_gamma = ptot/gMC->TrackMass();
- if(gMC->TrackPid() <= 3 && ptot > 0.002)
+ Int_t pid=gMC->TrackPid();
+ if((pid==kElectron || pid==kPositron || pid==kGamma) && ptot > 0.002)
{
pp = prim*1.58; // electrons above 20 MeV/c are on the plateau!
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff