1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 Revision 1.32 2002/11/21 22:43:32 alibrary
19 Removing AliMC and AliMCProcess
21 Revision 1.31 2002/10/23 07:17:34 alibrary
22 Introducing Riostream.h
24 Revision 1.30 2001/06/12 07:07:41 kowal2
25 New files for folder and stack
27 Revision 1.29 2001/05/08 16:03:06 kowal2
28 Geometry update according to the latest technical spec.
30 Revision 1.28 2001/04/27 15:23:07 kowal2
31 Correct materian in the central part of the inner containment vessel
33 Revision 1.27 2001/04/26 06:15:12 kowal2
34 Corrected bug in the inner containment vessel (cones)
36 Revision 1.26 2001/04/24 11:17:33 kowal2
39 Revision 1.25 2001/03/13 13:07:34 kowal2
40 Corrected bug in the TPC mother volume geometry.
43 Revision 1.24 2000/11/30 11:48:50 kowal2
44 TLorentzVector.h adde to satisfy the latest changes by Federico
46 Revision 1.23 2000/11/14 10:48:57 kowal2
47 Correct material used for TSA4. Thanks to J. Barbosa.
49 Revision 1.22 2000/11/06 17:24:10 kowal2
50 Corrected bug in the outer containment vessel and
51 the outer field cage geometry.
54 Revision 1.21 2000/11/02 16:55:24 kowal2
55 Corrected bug in the inner containment vessel geometry.
58 Revision 1.20 2000/11/02 07:24:11 kowal2
59 Correction in the TPC geometry.
60 Changes due to the new hit structure.
62 Revision 1.19 2000/07/10 20:57:39 hristov
63 Update of TPC code and macros by M.Kowalski
65 Revision 1.18 2000/06/30 12:07:50 kowal2
66 Updated from the TPC-PreRelease branch
68 Revision 1.17.2.4 2000/06/26 07:39:42 kowal2
69 Changes to obey the coding rules
71 Revision 1.17.2.3 2000/06/25 08:38:41 kowal2
72 Splitted from AliTPCtracking
74 Revision 1.17.2.2 2000/06/16 12:58:13 kowal2
75 Changed parameter settings
77 Revision 1.17.2.1 2000/06/09 07:15:07 kowal2
79 Defaults loaded automatically (hard-wired)
80 Optional parameters can be set via macro called in the constructor
82 Revision 1.17 2000/05/15 10:00:30 kowal2
83 Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
85 Revision 1.16 2000/04/17 09:37:33 kowal2
86 removed obsolete AliTPCDigitsDisplay.C
88 Revision 1.15.8.2 2000/04/10 08:29:48 kowal2
90 Different pad geometry for different sectors
91 Updated readouch chambers geometry
93 Revision 1.15.8.1 2000/04/10 07:56:53 kowal2
94 Not used anymore - removed
96 Revision 1.15 1999/11/04 17:28:07 fca
97 Correct barrel part of HV Degrader
99 Revision 1.14 1999/10/08 06:27:23 fca
100 Corrected bug in the HV degrader geometry, thanks to G.Tabary
102 Revision 1.13 1999/10/04 13:39:54 fca
103 Correct array index problem
105 Revision 1.12 1999/09/29 09:24:34 fca
106 Introduction of the Copyright and cvs Log
111 ///////////////////////////////////////////////////////////////////////////////
113 // Time Projection Chamber version 1 -- detailed TPC and fast simulation //
117 <img src="picts/AliTPCv1Class.gif">
122 ///////////////////////////////////////////////////////////////////////////////
125 #include <TGeometry.h>
129 #include "AliTPCv1.h"
131 #include <Riostream.h>
132 #include <Riostream.h>
133 #include "TLorentzVector.h"
135 #include "AliConst.h"
137 #include "AliTPCParam.h"
138 #include "AliTPCParamSR.h"
139 #include "AliTPCDigitsArray.h"
140 #include <TInterpreter.h>
144 //_____________________________________________________________________________
146 AliTPCv1::AliTPCv1(){
152 //_____________________________________________________________________________
153 AliTPCv1::AliTPCv1(const char *name, const char *title)
154 :AliTPC(name, title) {
156 // Standard constructor for Time Projection Chamber
158 fIdSens=fIdLSec=fIdUSec=0;
160 SetGasMixt(2,20,10,-1,0.9,0.1,0.);
163 fTPCParam->Write(fTPCParam->GetTitle());
168 //_____________________________________________________________________________
169 void AliTPCv1::CreateGeometry()
171 //-------------------------------------------------------------
172 // Creates geometry for Time Projection Chamber version 1
173 // Detailed geometry -- Fast simulation - space points
174 // at the pad-rows centers
175 // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
176 //-----------------------------------------------------------
180 <img src="picts/AliTPC.gif">
185 <img src="picts/AliTPCv1Tree.gif">
190 Int_t *idtmed = fIdtmed->GetArray(); // TPC media
192 Int_t idrotm[120]; // rotation matrices
194 Int_t nRotMat = 0; // actual number of rotation matrices
197 // Mother volume TPC (Air) - all volumes will be positioned in it
252 gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27);
256 //-------------------------------------------------------------------
257 // Tpc Outer INsulator (CO2) - contains cont. vessel and field cage
258 //-------------------------------------------------------------------
300 gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
302 //----------------------------------------------------------------
303 // Tpc Outer Contaiment Vessel
304 // mother volume - Al, daughters - composite (sandwich)
305 //----------------------------------------------------------------
347 gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
349 // Daughter volumes - sandwich
351 // Tpc SAndwich 1 - Al
357 gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
359 // Tpc SAndwich 2 - epoxy glue (I use Lexan)
364 gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3);
366 // Tpc SAndwich 3 - Tedlar
371 gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3);
374 // Tpc SAndwich 4 - fiber glass (G10)
379 gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3);
381 // Tpc SAndwich 5 - NOMEX honeycomb
386 gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3);
388 // 5->4->3->2->1->TCOV
391 gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY");
392 gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
393 gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
394 gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
396 gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY");
400 gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
402 //-------------------------------------------------------
403 // Tpc Outer Field Cage
404 // mother volume - Al, daughters - composite (sandwich)
405 //-------------------------------------------------------
447 gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
451 // Tpc SAndwich 6 - Tedlar
457 gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3);
459 // Tpc SAndwich 7 - fiber glass
464 gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3);
467 // Tpc SAndwich 8 - NOMEX
472 gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3);
476 gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY");
477 gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
478 gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY");
482 gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
486 gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
490 //--------------------------------------------------------------------
491 // Tpc Inner INsulator (CO2) - inner f.c. will be placed there
492 // Inner containment vessel will be placed directly in the TPC
493 //--------------------------------------------------------------------
523 gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15);
525 // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2
531 gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3);
533 gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY");
535 //-----------------------------------------------------
536 // Tpc Inner Field Cage
537 // mother volume - Al, daughters - composite (sandwich)
538 //------------------------------------------------------
604 gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33);
606 // daughter volumes - central part
608 // Tpc Sandwich 9 -Tedlar
614 gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3);
616 // Tpc Sandwich 10 - fiber glass (G10)
621 gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3);
623 // Tpc Sandwich 11 - NOMEX
628 gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3);
632 gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
633 gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
635 gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY");
637 // daughter volumes - outer parts (reinforced)
639 // Tpc Sandwich 12 -Tedlar
645 gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3);
647 // Tpc Sandwich 13 - fiber glass (G10)
652 gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3);
654 // Tpc Sandwich 14 - NOMEX
659 gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3);
663 gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
664 gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY");
666 gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY");
667 gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY");
669 // place this inside the inner insulator
671 gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
673 // and now in the TPC...
675 gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
677 //---------------------------------------------------------
678 // Tpc Inner Containment vessel - Cones
679 //---------------------------------------------------------
733 gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27);
735 Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
746 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
748 gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY");
749 gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
752 //---------------------------------------------------------
753 // Tpc Inner Containment vessel - Middle part -Al
754 //---------------------------------------------------------
796 gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21);
798 // Tpc Sandwich 15 - Al
804 gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3);
806 // Tpc Sandwich 16 - epoxy glue
811 gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3);
813 // Tpc Sandwich 17 - Tedlar
818 gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
820 // Tpc Sandwich 18 - carbon fiber
825 gMC->Gsvolu("TS18","TUBE",idtmed[15],dm,3);
827 // Tpc Sandwich 19 - Nomex
832 gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
834 // 19->18->17->16->15-> TICM
836 gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
837 gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
838 gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY");
839 gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
841 gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY");
844 // TPc inner cont. vessel Joints
850 gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3);
852 gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY");
853 gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY");
885 gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15);
887 gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY");
888 gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
892 // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being)
898 gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3);
900 gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY");
901 gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY");
905 gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY");
909 nRotMat++; // prepare for the next rotation matrix
911 //---------------------------------------------------------
912 // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
913 // and its daughters (HV membrane, rods, readout chambers)
914 //---------------------------------------------------------
920 gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3);
922 // sector opening angles
924 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
925 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
927 // sector angle shift
929 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
933 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
934 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
936 // All above parameters are identical for inner and outer
937 // sectors. The distinction is kept for the historical reasons
938 // and eventually will disappear.
940 Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
941 Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
944 //-------------------------------------------------------------------------
945 // Tpc Inner Readout Chambers
946 //-------------------------------------------------------------------------
950 dm[2]= 1.6; // thickness
953 gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
955 // this volume will be positioned in the empty space
956 // of the end-cap to avoid overlaps
963 gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
966 //------------------------------------------------
967 // Tpc Inner readout chamber Pad Plane
968 //------------------------------------------------
975 gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
979 dm[0] -= 1.218511934;
980 dm[1] -= 1.218511934;
983 gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
985 gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
987 gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
990 //----------------------------------------------
991 // Tpc Readout Chambers Empty spaces - for both
992 // inner and outer sectors
993 //----------------------------------------------
995 gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
997 // Inner sector - 4 spaces
1008 space = rr*tanAlpha-dm[0];
1010 for(Int_t nsLow=0;nsLow<4;nsLow++){
1013 dm[1]= rr*tanAlpha - space;
1017 gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1023 gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1026 dm[0] = rr*tanAlpha - space;
1032 // dm[1] - this is the dm[1] from the previous TRCE
1036 gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
1039 // TPc Space for Connectors
1046 gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1054 gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
1056 gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1064 // inner part of the inner sector - 2 x 20 holes
1066 astep = 20.00096874/19.;
1068 alpha = 10.00048437-astep;
1080 for(ncon=0;ncon<20;ncon++){
1086 phi3 = (alpha>0) ? 0. : 180.;
1087 theta3 = TMath::Abs(alpha);
1089 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1093 gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1094 gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1105 // outer part of the inner sector - 2 x 25 holes
1107 astep = 20.00096874/24.;
1108 alpha = 10.00048437-astep;
1116 for(ncon=0;ncon<25;ncon++){
1122 phi3 = (alpha>0) ? 0. : 180.;
1123 theta3 = TMath::Abs(alpha);
1125 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1129 gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1130 gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1141 //--------------------------------------------------------------------------
1142 // TPC Outer Readout Chambers
1143 // this is NOT a final design
1144 //--------------------------------------------------------------------------
1148 dm[2]= 1.5; //thickness
1151 gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1153 //------------------------------------------------
1154 // Tpc Outer readout chamber Pad Plane
1155 //------------------------------------------------
1159 gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1161 dm[0] -= 1.218511934;
1162 dm[1] -= 1.218511934;
1165 gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1167 gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1169 gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1178 gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1185 gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1192 gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1194 //-----------------------------------------------
1195 // Tpc Services Support Wheel
1196 //-----------------------------------------------
1211 gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1213 // Tpc Services Wheel Cover
1218 gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1220 // Tpc Service wheel Cover Empty space
1227 gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1229 // Tpc services Wheel Empty Spaces
1236 gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1238 // Tpc Services Wheel Bars
1240 gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1250 gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1255 gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1257 // TPc ELectronics - right now 30% X0 Si
1264 gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1265 gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1267 //--------------------------------------------------------------------------
1269 //--------------------------------------------------------------------------
1271 // TPc Main Wheel - Al
1277 gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1279 //--------------------------------------------------------------------------
1280 // Tpc Empty Space for the Readout chambers
1281 //--------------------------------------------------------------------------
1285 Float_t dR = 0.5*(rUp-rLow);
1287 space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide
1289 dm[0]= rLow*tanAlpha-space;
1290 dm[1]= rUp*tanAlpha-space;
1294 gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1298 gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1302 gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1304 // Tpc Empty Space Bars - Al (daughters of TESR)
1308 gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1312 dm[0]= rLow*tanAlpha-space;
1313 dm[1]= 88.7*tanAlpha-space;
1319 gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1323 dm[0]= 131.65*tanAlpha-space;
1324 dm[1]= 136.5*tanAlpha-space;
1327 zBar = -dR +131.65+dm[3]-rLow;
1329 gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1333 dm[0]= 240.4*tanAlpha-space;
1334 dm[1]= rUp*tanAlpha-space;
1339 gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1342 //------------------------------------------------------
1343 // TPc Lower "S" Sectors
1344 //------------------------------------------------------
1349 Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1350 Float_t inSecUpEdge = fTPCParam->GetInnerRadiusUp();
1352 dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1353 dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1354 dm[2] = 0.5*(250. - 5.e-3);
1355 dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);
1357 gMC->Gsvolu("TPLS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1359 //----------------------------------------------------------
1360 // TPc Upper Sectors
1361 //----------------------------------------------------------
1363 Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1364 Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1366 dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1367 dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1368 dm[2] = 0.5*(250. - 5.e-3);
1369 dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1371 gMC->Gsvolu("TPUS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1373 //--------------------------------------------------------
1374 // TPc Sensitive Strips, the same for S and L sectors
1375 //--------------------------------------------------------
1377 gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1379 Int_t nofStrips,nstr;
1381 Float_t stripThick = 0.01; // 100 microns
1385 nofStrips = fTPCParam->GetNRowLow();
1386 deadSpace = fTPCParam->GetInnerWireMount();
1388 dm[2] = 0.5*(250. - 5.e-3);
1389 dm[3] = 0.5 * stripThick;
1391 for(nstr=0;nstr<nofStrips;nstr++){
1393 r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1394 r2 = r1 + stripThick;
1395 dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1396 dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1397 zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1401 gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1405 Int_t nsSave = nofStrips;
1409 nofStrips = fTPCParam->GetNRowUp();
1410 deadSpace = fTPCParam->GetOuterWireMount();
1412 dm[2] = 0.5*(250. - 5.e-3);
1413 dm[3] = 0.5 * stripThick;
1415 for(nstr=0;nstr<nofStrips;nstr++){
1417 r1 = fTPCParam->GetPadRowRadiiUp(nstr);
1418 r2 = r1 + stripThick;
1419 dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1420 dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1421 zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1425 gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1429 //-------------------------------------------------------
1430 // positioning of the empty spaces into the main wheel
1431 // and readout chambers and sectors into the drift gas
1432 //-------------------------------------------------------
1435 Float_t rCenter,xc,yc;
1436 Float_t rInner,rOuter; // center of the inner and outer chamber
1444 for(Int_t ns=0; ns<nInnerSector;ns++){
1446 phi1 = ns * innerOpenAngle + innerAngleShift;
1447 phi1 *= kRaddeg; // in degrees
1449 phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1451 if (phi1 > 360.) phi1 -= 360.;
1456 phi3 = ns * innerOpenAngle + innerAngleShift;
1457 phi3 *= kRaddeg; // in degrees
1459 phi3 = (Float_t)TMath::Nint(phi3);
1461 if(phi3 > 360.) phi3 -= 360.;
1465 // "holes"->End plate
1467 xc = rCenter*TMath::Cos(phi3*kDegrad);
1468 yc = rCenter*TMath::Sin(phi3*kDegrad);
1470 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1472 gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1474 // TSCE->TSWC (services wheel volumes)
1476 xc = 166.142*TMath::Cos(phi3*kDegrad);
1477 yc = 166.142*TMath::Sin(phi3*kDegrad);
1479 gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1480 gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1483 // readout chambers->TDGN (drift gas)
1485 xc = rInner*TMath::Cos(phi3*kDegrad);
1486 yc = rInner*TMath::Sin(phi3*kDegrad);
1488 gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1490 // here lower sectors
1492 gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1493 gMC->Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1497 xc = rOuter*TMath::Cos(phi3*kDegrad);
1498 yc = rOuter*TMath::Sin(phi3*kDegrad);
1500 gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1502 // here upper sectors
1504 gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1505 gMC->Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1510 theta2 = 0.; // reflection
1512 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1514 xc = rInner*TMath::Cos(phi3*kDegrad);
1515 yc = rInner*TMath::Sin(phi3*kDegrad);
1517 gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1519 xc = rOuter*TMath::Cos(phi3*kDegrad);
1520 yc = rOuter*TMath::Sin(phi3*kDegrad);
1522 gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1529 gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1530 gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY");
1532 //---------------------------------------------------------
1533 // Tpc High Voltage Membrane - 100 microns of mylar
1534 //---------------------------------------------------------
1540 gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3);
1542 gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1544 // Tpc High Voltage membrane Holders
1546 gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0);
1556 gMC->Gsposp("THVH",1,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1564 gMC->Gsposp("THVH",2,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1566 //----------------------------------------------------------
1567 // TPc Support Rods - MAKROLON
1568 //----------------------------------------------------------
1573 gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ
1576 for(Int_t nrod=0;nrod<18;nrod++){
1577 Float_t angle=innerOpenAngle*(Float_t)nrod;
1579 xc=81.5*TMath::Cos(angle);
1580 yc=81.5*TMath::Sin(angle);
1584 gMC->Gsposp("TPSR",nrod+1,"TDGN",xc,yc,126.9,0,"ONLY",dm,3);
1585 gMC->Gsposp("TPSR",nrod+19,"TDGN",xc,yc,-126.9,0,"ONLY",dm,3);
1589 xc=254.25*TMath::Cos(angle);
1590 yc=254.25*TMath::Sin(angle);
1592 // rod number 54 contans the HV cable
1595 gMC->Gsposp("TPSR",nrod+37,"TDGN",xc,yc,127.,0,"ONLY",dm,3);
1596 gMC->Gsposp("TPSR",nrod+54,"TDGN",xc,yc,-127.,0,"ONLY",dm,3);
1601 //----------------------------------------------------------
1602 // Tpc High Voltage Rod - MAKROLON + Copper cable
1603 //----------------------------------------------------------
1605 // rod with cable (Left)
1611 gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1619 gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1627 gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1629 gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1630 gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1632 // rod without cable
1638 gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1640 gMC->Gspos("THVL",1,"TDGN",xc,yc,-127.,0,"ONLY");
1641 gMC->Gspos("THVR",1,"TDGN",xc,yc,127.,0,"ONLY");
1643 gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY");
1645 // services wheel cover -> wheel
1648 gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1649 gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1652 // put the wheel into the TPC
1654 gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1655 gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1659 gMC->Gsord("TPMW",6);
1660 gMC->Gsord("TSSW",6);
1661 gMC->Gsord("TSWC",6);
1662 gMC->Gsord("TPLS",3);
1663 gMC->Gsord("TPUS",3);
1664 gMC->Gsord("TDGN",6);
1667 // put the TPC into ALIC (main mother volume)
1669 gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY");
1673 } // end of function
1675 //_____________________________________________________________________________
1676 void AliTPCv1::DrawDetector()
1679 // Draw a shaded view of the Time Projection Chamber version 1
1682 // Set everything unseen
1683 gMC->Gsatt("*", "seen", -1);
1685 // Set ALIC mother transparent
1686 gMC->Gsatt("ALIC","SEEN",0);
1688 // Set the volumes visible
1689 gMC->Gsatt("TPC ","SEEN",0);
1690 gMC->Gsatt("TOIN","SEEN",1);
1691 gMC->Gsatt("TOIN","COLO",7);
1692 gMC->Gsatt("TOCV","SEEN",1);
1693 gMC->Gsatt("TOCV","COLO",4);
1694 gMC->Gsatt("TSA1","SEEN",0);
1695 gMC->Gsatt("TSA2","SEEN",0);
1696 gMC->Gsatt("TSA3","SEEN",0);
1697 gMC->Gsatt("TSA4","SEEN",0);
1698 gMC->Gsatt("TSA5","SEEN",0);
1699 gMC->Gsatt("TOFC","SEEN",1);
1700 gMC->Gsatt("TOFC","COLO",4);
1701 gMC->Gsatt("TSA6","SEEN",0);
1702 gMC->Gsatt("TSA7","SEEN",0);
1703 gMC->Gsatt("TSA8","SEEN",0);
1704 gMC->Gsatt("TIIN","SEEN",1);
1705 gMC->Gsatt("TIIN","COLO",7);
1706 gMC->Gsatt("TII1","SEEN",0);
1707 gMC->Gsatt("TIFC","SEEN",1);
1708 gMC->Gsatt("TIFC","COLO",4);
1709 gMC->Gsatt("TSA9","SEEN",0);
1710 gMC->Gsatt("TS10","SEEN",0);
1711 gMC->Gsatt("TS11","SEEN",0);
1712 gMC->Gsatt("TS12","SEEN",0);
1713 gMC->Gsatt("TS13","SEEN",0);
1714 gMC->Gsatt("TS14","SEEN",0);
1715 gMC->Gsatt("TICC","SEEN",0);
1716 gMC->Gsatt("TICM","SEEN",0);
1717 gMC->Gsatt("TS15","SEEN",0);
1718 gMC->Gsatt("TS16","SEEN",0);
1719 gMC->Gsatt("TS17","SEEN",0);
1720 gMC->Gsatt("TS18","SEEN",0);
1721 gMC->Gsatt("TS19","SEEN",0);
1722 gMC->Gsatt("TPJ1","SEEN",0);
1723 gMC->Gsatt("TPJ2","SEEN",0);
1724 gMC->Gsatt("TICS","SEEN",0);
1725 gMC->Gsatt("TDGN","SEEN",0);
1726 gMC->Gsatt("TIRC","SEEN",0);
1727 gMC->Gsatt("TIC1","SEEN",1);
1728 gMC->Gsatt("TIPP","SEEN",0);
1729 gMC->Gsatt("TIC3","SEEN",0);
1730 gMC->Gsatt("TRCE","SEEN",0);
1731 gMC->Gsatt("TPSC","SEEN",0);
1732 gMC->Gsatt("TPCC","SEEN",0);
1733 gMC->Gsatt("TORC","SEEN",0);
1734 gMC->Gsatt("TOPP","SEEN",0);
1735 gMC->Gsatt("TOC3","SEEN",0);
1736 gMC->Gsatt("TOC1","SEEN",1);
1737 gMC->Gsatt("TSSW","SEEN",1);
1738 gMC->Gsatt("TSWC","SEEN",1);
1739 gMC->Gsatt("TSSW","COLO",3);
1740 gMC->Gsatt("TSWC","COLO",3);
1741 gMC->Gsatt("TSCE","COLO",6);
1742 gMC->Gsatt("TSCE","SEEN",1);
1743 gMC->Gsatt("TWES","SEEN",0);
1744 gMC->Gsatt("TSWB","SEEN",0);
1745 gMC->Gsatt("TPEL","SEEN",0);
1746 gMC->Gsatt("TPMW","SEEN",1);
1747 gMC->Gsatt("TESR","SEEN",1);
1748 gMC->Gsatt("TPMW","COLO",12);
1749 gMC->Gsatt("TIC1","COLO",5);
1750 gMC->Gsatt("TOC1","COLO",5);
1751 gMC->Gsatt("TESB","SEEN",0);
1752 gMC->Gsatt("THVM","SEEN",1);
1753 gMC->Gsatt("THVM","COLO",11);
1754 gMC->Gsatt("THVH","SEEN",0);
1755 gMC->Gsatt("TPSR","SEEN",0);
1756 gMC->Gsatt("THVL","SEEN",0);
1757 gMC->Gsatt("THVC","SEEN",0);
1758 gMC->Gsatt("THVE","SEEN",0);
1759 gMC->Gsatt("THVR","SEEN",0);
1760 gMC->Gsatt("TPSS","SEEN",0);
1761 gMC->Gsatt("TPUS","SEEN",0);
1762 gMC->Gsatt("TPLS","SEEN",0);
1765 gMC->Gdopt("hide", "on");
1766 gMC->Gdopt("shad", "on");
1767 gMC->Gsatt("*", "fill", 7);
1768 gMC->SetClipBox(".");
1769 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1770 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1771 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1772 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1773 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1774 gMC->DefaultRange();
1775 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1776 gMC->Gdhead(1111, "Time Projection Chamber");
1777 gMC->Gdman(18, 4, "MAN");
1778 gMC->Gdopt("hide","off");
1781 //_____________________________________________________________________________
1782 void AliTPCv1::CreateMaterials()
1785 // Define materials for Time Projection Chamber
1787 AliTPC::CreateMaterials();
1790 //_____________________________________________________________________________
1791 void AliTPCv1::Init()
1794 // Initialises TPC detector after it has been created
1797 fIdSens=gMC->VolId("TPSS"); // sensitive strip
1798 fIdLSec=gMC->VolId("TPLS"); // lower sector
1799 fIdUSec=gMC->VolId("TPUS"); // upper sector
1801 printf("%s: *** TPC version 1 initialized***\n",ClassName());
1803 // printf("TPC version 1 initialized\n");
1806 //_____________________________________________________________________________
1807 void AliTPCv1::StepManager()
1810 // Called at every step in the Time Projection Chamber
1818 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1821 // Only charged tracks entering the sensitive volume
1824 id = gMC->CurrentVolID(copy);
1828 // sensitive volume (strip)
1830 vol[1]= copy-1; // row number (absolute)
1834 id = gMC->CurrentVolOffID(1,copy);
1840 vol[0] = copy-1; // sector number
1847 vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
1848 vol[1] -= fTPCParam->GetNRowLow(); // row number
1854 // because Jouri wants to have this
1856 gMC->TrackMomentum(p);
1860 hits[3]=0.; // this hit has no energy loss
1861 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1863 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1865 gMC->TrackPosition(p);
1869 hits[3]=0.; // this hit has no energy loss
1870 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1872 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1876 gMC->TrackPosition(p);
1877 for(i=0;i<3;++i) hits[i]=p[i];
1878 hits[3]=1; //I'd like to have something positive here (I.Belikov)
1879 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1881 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1888 //_____________________________________________________________________________