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 1.21 2000/11/02 16:55:24 kowal2
19 Corrected bug in the inner containment vessel geometry.
22 Revision 1.20 2000/11/02 07:24:11 kowal2
23 Correction in the TPC geometry.
24 Changes due to the new hit structure.
26 Revision 1.19 2000/07/10 20:57:39 hristov
27 Update of TPC code and macros by M.Kowalski
29 Revision 1.18 2000/06/30 12:07:50 kowal2
30 Updated from the TPC-PreRelease branch
32 Revision 1.17.2.4 2000/06/26 07:39:42 kowal2
33 Changes to obey the coding rules
35 Revision 1.17.2.3 2000/06/25 08:38:41 kowal2
36 Splitted from AliTPCtracking
38 Revision 1.17.2.2 2000/06/16 12:58:13 kowal2
39 Changed parameter settings
41 Revision 1.17.2.1 2000/06/09 07:15:07 kowal2
43 Defaults loaded automatically (hard-wired)
44 Optional parameters can be set via macro called in the constructor
46 Revision 1.17 2000/05/15 10:00:30 kowal2
47 Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
49 Revision 1.16 2000/04/17 09:37:33 kowal2
50 removed obsolete AliTPCDigitsDisplay.C
52 Revision 1.15.8.2 2000/04/10 08:29:48 kowal2
54 Different pad geometry for different sectors
55 Updated readouch chambers geometry
57 Revision 1.15.8.1 2000/04/10 07:56:53 kowal2
58 Not used anymore - removed
60 Revision 1.15 1999/11/04 17:28:07 fca
61 Correct barrel part of HV Degrader
63 Revision 1.14 1999/10/08 06:27:23 fca
64 Corrected bug in the HV degrader geometry, thanks to G.Tabary
66 Revision 1.13 1999/10/04 13:39:54 fca
67 Correct array index problem
69 Revision 1.12 1999/09/29 09:24:34 fca
70 Introduction of the Copyright and cvs Log
75 ///////////////////////////////////////////////////////////////////////////////
77 // Time Projection Chamber version 1 -- detailed TPC and fast simulation //
81 <img src="picts/AliTPCv1Class.gif">
86 ///////////////////////////////////////////////////////////////////////////////
89 #include <TGeometry.h>
101 #include "AliTPCParam.h"
102 #include "AliTPCParamSR.h"
103 #include "AliTPCDigitsArray.h"
104 #include <TInterpreter.h>
108 //_____________________________________________________________________________
110 AliTPCv1::AliTPCv1(){
116 //_____________________________________________________________________________
117 AliTPCv1::AliTPCv1(const char *name, const char *title)
118 :AliTPC(name, title) {
120 // Standard constructor for Time Projection Chamber
122 fIdSens=fIdLSec=fIdUSec=0;
124 SetGasMixt(2,20,10,-1,0.9,0.1,0.);
127 fTPCParam->Write(fTPCParam->GetTitle());
132 //_____________________________________________________________________________
133 void AliTPCv1::CreateGeometry()
135 //-------------------------------------------------------------
136 // Creates geometry for Time Projection Chamber version 1
137 // Detailed geometry -- Fast simulation - space points
138 // at the pad-rows centers
139 // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
140 //-----------------------------------------------------------
144 <img src="picts/AliTPC.gif">
149 <img src="picts/AliTPCv1Tree.gif">
154 Int_t *idtmed = fIdtmed->GetArray(); // TPC media
156 Int_t idrotm[120]; // rotation matrices
158 Int_t nRotMat = 0; // actual number of rotation matrices
162 // Mother volume (Air) - all volumes will be positioned in it
242 gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,39);
245 //-------------------------------------------------------------------
246 // Tpc Outer INsulator (CO2)
247 //-------------------------------------------------------------------
286 gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
288 //---------------------------------------------------------------
289 // shreds (G10) - TPC Rings
290 //---------------------------------------------------------------
292 gMC->Gsvolu("TPCR","TUBE",idtmed[12],dm,0);
298 gMC->Gsposp("TPCR",1,"TOIN",0.,0.,-253.3,0,"ONLY",dm,3); // left bottom
306 gMC->Gsposp("TPCR",2,"TOIN",0.,0.,253.3,0,"ONLY",dm,3); // right
314 gMC->Gsposp("TPCR",3,"TOIN",0.,0.,-250.7,0,"ONLY",dm,3); // left top
316 //----------------------------------------------------------------
317 // Tpc Outer Contaiment Vessel
318 // mother volume - Al, daughters - composite (sandwich)
319 //----------------------------------------------------------------
360 gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
364 // Tpc SAndwich 1 - Al
370 gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
372 // Tpc SAndwich 2 - Tedlar
377 gMC->Gsvolu("TSA2","TUBE",idtmed[9],dm,3);
379 // Tpc SAndwich 3 - Kevlar
384 gMC->Gsvolu("TSA3","TUBE",idtmed[5],dm,3);
386 // Tpc SAndwich 4 - NOMEX honeycomb
391 gMC->Gsvolu("TSA4","TUBE",idtmed[5],dm,3);
395 gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
396 gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
397 gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
399 gMC->Gspos("TSA1",1,"TOCV",0.,0.,2.6,0,"ONLY");
403 gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
405 //-------------------------------------------------------
406 // Tpc Outer Field Cage
407 // mother volume - Al, daughters - composite (sandwich)
408 //-------------------------------------------------------
448 gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
452 // Tpc SAndwich 5 - Tedlar
458 gMC->Gsvolu("TSA5","TUBE",idtmed[9],dm,3);
460 // Tpc SAndwich 6 - Kevlar
465 gMC->Gsvolu("TSA6","TUBE",idtmed[5],dm,3);
468 // Tpc SAndwich 7 - NOMEX
473 gMC->Gsvolu("TSA7","TUBE",idtmed[6],dm,3);
477 gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
478 gMC->Gspos("TSA6",1,"TSA5",0.,0.,0.,0,"ONLY");
480 gMC->Gspos("TSA5",1,"TOFC",0.,0.,0.,0,"ONLY");
484 gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
488 gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
490 //--------------------------------------------------------------------
491 // Tpc Inner INsulator (CO2)
492 //--------------------------------------------------------------------
507 Float_t tanL = (66.2-59.0)/(255.6-73.3); // tangent of the left cone part
510 dm[7]= 59.0+ (253.6-73.3)*tanL;
591 gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,48);
594 //--------------------------------------------------------------------
595 // Tpc Inner Containment vessel, Left part
596 // mother volume - Al, daughter - composite (sandwich)
597 //--------------------------------------------------------------------
611 Float_t cosL = 1./TMath::Sqrt(1.+tanL*tanL);
612 Float_t sandThick = 2.14; // cone composite thickness
618 dm[7]= 59.0 + (253.6-73.3)*tanL;
625 dm[11]= dm[7]+sandThick/cosL;
630 dm[13]= 59.0+(75.6-73.3)*tanL;
631 dm[14]= dm[13]+sandThick/cosL;
657 gMC->Gsvolu("TICL","PCON",idtmed[4],dm,27);
661 // Tpc SAndwich 9 - Al
670 dm[4]= 59.0+(254.3-73.3)*tanL;
671 dm[5]= dm[4]+sandThick/cosL;
676 dm[7]= 59.0+(78.3-73.3)*tanL;
677 dm[8]= dm[7]+sandThick/cosL;
681 gMC->Gsvolu("TSA9","PCON",idtmed[4],dm,9);
683 // Tpc SAndwich 10 - Tedlar
693 gMC->Gsvolu("TS10","PCON",idtmed[9],dm,9);
695 // Tpc SAndwich 11 - Kevlar
705 gMC->Gsvolu("TS11","PCON",idtmed[5],dm,9);
707 // Tpc SAndwich 12 - NOMEX
717 gMC->Gsvolu("TS12","PCON",idtmed[6],dm,9);
721 gMC->Gspos("TS12",1,"TS11",0.,0.,0.,0,"ONLY");
722 gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
723 gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
727 gMC->Gspos("TSA9",1,"TICL",0.,0.,0.,0,"ONLY");
729 //--------------------------------------------------------------------
730 // Tpc Inner Containment vessel, Right part
731 // mother volume - Al, daughter - composite (sandwich)
732 //--------------------------------------------------------------------
758 Float_t tanR = (66.0-59.0)/(250.5-73.3); // to avoid accuracy problems
759 Float_t cosR = 1./TMath::Sqrt(1.+tanR*tanR); //as above
764 dm[13]= 59.0+(75.6-73.3)*tanR;
771 dm[17]= dm[16]+sandThick/cosR;
776 dm[19]= 59.0+(248.4-73.3)*tanR;
777 dm[20]= dm[19]+sandThick/cosR;
791 gMC->Gsvolu("TICR","PCON",idtmed[4],dm,27);
797 // Tpc SAndwich 13 - Al
806 dm[4]= 59.0+(78.3-73.3)*tanR;
807 dm[5]= dm[4]+sandThick/cosR;
812 dm[7]= 59.0+(249.1-73.3)*tanR;
813 dm[8]= dm[7]+sandThick/cosR;
817 gMC->Gsvolu("TS13","PCON",idtmed[4],dm,9);
819 // Tpc SAndwich 14 - Tedlar
829 gMC->Gsvolu("TS14","PCON",idtmed[9],dm,9);
831 // Tpc SAndwich 15 - Kevlar
841 gMC->Gsvolu("TS15","PCON",idtmed[5],dm,9);
843 // Tpc SAndwich 16 - NOMEX
853 gMC->Gsvolu("TS16","PCON",idtmed[6],dm,9);
857 gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
858 gMC->Gspos("TS15",1,"TS14",0.,0.,0.,0,"ONLY");
859 gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
863 gMC->Gspos("TS13",1,"TICR",0.,0.,0.,0,"ONLY");
865 //------------------------------------------------------
866 // Tpc Inner Field Cage
867 // mother volume - Al, daughters - composite (sandwich)
868 //------------------------------------------------------
910 gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,21);
914 // Tpc Sandwich 17 - Tedlar
920 gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
922 // Tpc Sandwich 18 - Kevlar
927 gMC->Gsvolu("TS18","TUBE",idtmed[5],dm,3);
930 // Tpc Sandwich 19 - NOMEX
935 gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
939 gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
940 gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
944 gMC->Gspos("TS17",1,"TIFC",0.,0.,0.,0,"ONLY");
952 gMC->Gsposp("TPCR",4,"TIIN",0.,0.,-253.3,0,"ONLY",dm,3);
957 gMC->Gsposp("TPCR",5,"TIIN",0.,0.,250.7,0,"ONLY",dm,3);
962 gMC->Gsposp("TPCR",6,"TIIN",0.,0.,253.3,0,"ONLY",dm,3);
966 gMC->Gspos("TICL",1,"TIIN",0.,0.,0.,0,"ONLY");
970 gMC->Gspos("TICR",1,"TIIN",0.,0.,0.,0,"ONLY");
974 gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
976 // Tpc Sandwich 21 - Al (central barrel)
982 gMC->Gsvolu("TS21","TUBE",idtmed[4],dm,3);
984 // Tpc Sandwich 22 - Tedlar (central barrel)
989 gMC->Gsvolu("TS22","TUBE",idtmed[9],dm,3);
991 // Tpc Sandwich 23 - Kevlar (central barrel)
996 gMC->Gsvolu("TS23","TUBE",idtmed[5],dm,3);
998 // Tpc Sandwich 24 - NOMEX (central barrel)
1003 gMC->Gsvolu("TS24","TUBE",idtmed[6],dm,3);
1007 gMC->Gspos("TS24",1,"TS23",0.,0.,0.,0,"ONLY");
1008 gMC->Gspos("TS23",1,"TS22",0.,0.,0.,0,"ONLY");
1009 gMC->Gspos("TS22",1,"TS21",0.,0.,0.,0,"ONLY");
1011 gMC->Gspos("TS21",1,"TIIN",0.,0.,0.,0,"ONLY");
1013 // put everything into the TPC
1015 gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
1018 //---------------------------------------------------------
1019 // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
1020 // and its daughters (HV membrane, rods, readout chambers)
1021 //---------------------------------------------------------
1027 gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3);
1029 // sector opening angles
1031 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
1032 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1034 // sector angle shift
1036 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
1038 // number of sectors
1040 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
1041 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
1043 // All above parameters are identical for inner and outer
1044 // sectors. The distinction is kept for the historical reasons
1045 // and eventually will disappear.
1047 Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
1048 Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
1051 //-------------------------------------------------------------------------
1052 // Tpc Inner Readout Chambers
1053 //-------------------------------------------------------------------------
1057 dm[2]= 1.6; // thickness
1060 gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
1062 // this volume will be positioned in the empty space
1063 // of the end-cap to avoid overlaps
1070 gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
1073 //------------------------------------------------
1074 // Tpc Inner readout chamber Pad Plane
1075 //------------------------------------------------
1082 gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
1086 dm[0] -= 1.218511934;
1087 dm[1] -= 1.218511934;
1090 gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
1092 gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
1094 gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
1097 //----------------------------------------------
1098 // Tpc Readout Chambers Empty spaces - for both
1099 // inner and outer sectors
1100 //----------------------------------------------
1102 gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
1104 // Inner sector - 4 spaces
1115 space = rr*tanAlpha-dm[0];
1117 for(Int_t nsLow=0;nsLow<4;nsLow++){
1120 dm[1]= rr*tanAlpha - space;
1124 gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1130 gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1133 dm[0] = rr*tanAlpha - space;
1139 // dm[1] - this is the dm[1] from the previous TRCE
1143 gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
1146 // TPc Space for Connectors
1153 gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1161 gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
1163 gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1171 Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
1173 // inner part of the inner sector - 2 x 20 holes
1175 astep = 20.00096874/19.;
1177 alpha = 10.00048437-astep;
1189 for(ncon=0;ncon<20;ncon++){
1195 phi3 = (alpha>0) ? 0. : 180.;
1196 theta3 = TMath::Abs(alpha);
1198 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1202 gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1203 gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1214 // outer part of the inner sector - 2 x 25 holes
1216 astep = 20.00096874/24.;
1217 alpha = 10.00048437-astep;
1225 for(ncon=0;ncon<25;ncon++){
1231 phi3 = (alpha>0) ? 0. : 180.;
1232 theta3 = TMath::Abs(alpha);
1234 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1238 gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1239 gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1250 //--------------------------------------------------------------------------
1251 // TPC Outer Readout Chambers
1252 // this is NOT a final design
1253 //--------------------------------------------------------------------------
1257 dm[2]= 1.5; //thickness
1260 gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1262 //------------------------------------------------
1263 // Tpc Outer readout chamber Pad Plane
1264 //------------------------------------------------
1268 gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1270 dm[0] -= 1.218511934;
1271 dm[1] -= 1.218511934;
1274 gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1276 gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1278 gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1288 gMC->Gsposp("TRCE",11,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1295 gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1303 gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1306 //-----------------------------------------------
1307 // Tpc Services Support Wheel
1308 //-----------------------------------------------
1323 gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1325 // Tpc Services Wheel Cover
1330 gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1332 // Tpc Service wheel Cover Empty space
1339 gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1341 // Tpc services Wheel Empty Spaces
1348 gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1350 // Tpc Services Wheel Bars
1352 gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1362 gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1367 gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1369 // TPc ELectronics - right now 30% X0 Si
1376 gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1377 gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1379 //--------------------------------------------------------------------------
1381 //--------------------------------------------------------------------------
1383 // TPc Main Wheel - Al
1389 gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1391 // TPc Extra Wheel (to avoid overlapping) - Al
1397 gMC->Gsvolu("TPEW","TUBE",idtmed[4],dm,3);
1399 //--------------------------------------------------------------------------
1400 // Tpc Empty Space for the Readout chambers
1401 //--------------------------------------------------------------------------
1405 Float_t dR = 0.5*(rUp-rLow);
1407 space= 1.4/cosAlpha; // wheel ribs are 2.8 cm wide
1409 dm[0]= rLow*tanAlpha-space;
1410 dm[1]= rUp*tanAlpha-space;
1414 gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1419 gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1424 gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1426 // Tpc Empty Space Bars - Al (daughters of TESR)
1430 gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1434 dm[0]= rLow*tanAlpha-space;
1435 dm[1]= 88.7*tanAlpha-space;
1441 gMC->Gsposp("TESB",1,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1445 dm[0]= 131.65*tanAlpha-space;
1446 dm[1]= 136.5*tanAlpha-space;
1449 zBar = -dR +131.65+dm[3]-rLow;
1451 gMC->Gsposp("TESB",2,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1455 dm[0]= 240.4*tanAlpha-space;
1456 dm[1]= rUp*tanAlpha-space;
1461 gMC->Gsposp("TESB",3,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1463 //------------------------------------------------------
1464 // TPc Lower "S" Sectors
1465 //------------------------------------------------------
1470 Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1471 Float_t inSecUpEdge = fTPCParam->GetInnerRadiusUp();
1473 dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1474 dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1475 dm[2] = 0.5*(250. - 0.3);
1476 dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);
1478 gMC->Gsvolu("TPLS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1480 //----------------------------------------------------------
1481 // TPc Upper Sectors
1482 //----------------------------------------------------------
1484 Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1485 Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1487 dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1488 dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1489 dm[2] = 0.5*(250. - 0.3);
1490 dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1492 gMC->Gsvolu("TPUS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1494 //--------------------------------------------------------
1495 // TPc Sensitive Strips, the same for S and L sectors
1496 //--------------------------------------------------------
1498 gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1500 Int_t nofStrips,nstr;
1502 Float_t stripThick = 0.01; // 100 microns
1506 nofStrips = fTPCParam->GetNRowLow();
1507 deadSpace = fTPCParam->GetInnerWireMount();
1509 dm[2] = 0.5*(250. - 0.3);
1510 dm[3] = 0.5 * stripThick;
1512 for(nstr=0;nstr<nofStrips;nstr++){
1514 r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1515 r2 = r1 + stripThick;
1516 dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1517 dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1518 zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1522 gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1526 Int_t nsSave = nofStrips;
1530 nofStrips = fTPCParam->GetNRowUp();
1531 deadSpace = fTPCParam->GetOuterWireMount();
1533 dm[2] = 0.5*(250. - 0.3);
1534 dm[3] = 0.5 * stripThick;
1536 for(nstr=0;nstr<nofStrips;nstr++){
1538 r1 = fTPCParam->GetPadRowRadiiUp(nstr);
1539 r2 = r1 + stripThick;
1540 dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1541 dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1542 zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1546 gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1551 //-------------------------------------------------------
1552 // positioning of the empty spaces into the main wheel
1553 // and readout chambers and sectors into the drift gas
1554 //-------------------------------------------------------
1556 Float_t rCenter,xc,yc;
1557 Float_t rInner,rOuter; // center of the inner and outer chamber
1564 for(Int_t ns=0; ns<nInnerSector;ns++){
1566 phi1 = ns * innerOpenAngle + innerAngleShift;
1567 phi1 *= kRaddeg; // in degrees
1569 phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1571 if (phi1 > 360.) phi1 -= 360.;
1576 phi3 = ns * innerOpenAngle + innerAngleShift;
1577 phi3 *= kRaddeg; // in degrees
1579 phi3 = (Float_t)TMath::Nint(phi3);
1581 if(phi3 > 360.) phi3 -= 360.;
1585 // "holes"->End plate
1587 xc = rCenter*TMath::Cos(phi3*kDegrad);
1588 yc = rCenter*TMath::Sin(phi3*kDegrad);
1590 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1592 gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1594 // TSCE->TSWC (services wheel volumes)
1596 xc = 166.142*TMath::Cos(phi3*kDegrad);
1597 yc = 166.142*TMath::Sin(phi3*kDegrad);
1599 gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1600 gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1603 // readout chambers->TDGN (drift gas)
1605 xc = rInner*TMath::Cos(phi3*kDegrad);
1606 yc = rInner*TMath::Sin(phi3*kDegrad);
1608 gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1610 // here lower sectors
1612 gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1613 gMC->Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1615 xc = rOuter*TMath::Cos(phi3*kDegrad);
1616 yc = rOuter*TMath::Sin(phi3*kDegrad);
1618 gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1620 // here upper sectors
1622 gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1623 gMC->Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1627 theta2 = 0.; // reflection
1629 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1631 xc = rInner*TMath::Cos(phi3*kDegrad);
1632 yc = rInner*TMath::Sin(phi3*kDegrad);
1634 gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1636 xc = rOuter*TMath::Cos(phi3*kDegrad);
1637 yc = rOuter*TMath::Sin(phi3*kDegrad);
1639 gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1645 // reflection matrix
1654 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1659 gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1660 gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[nRotMat],"ONLY");
1661 gMC->Gspos("TPEW",1,"TPC ",0.,0.,257.65,0,"ONLY");
1662 gMC->Gspos("TPEW",2,"TPC ",0.,0.,-257.5,0,"ONLY");
1666 //-------------------------------------------------------
1667 // Tpc High Voltage Membrane - NOMEX honeycomb
1668 //-------------------------------------------------------
1687 gMC->Gsvolu("THVM","PGON",idtmed[6],dm,10);
1689 gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1691 //----------------------------------------------------------
1692 // TPc Support Rods - MAKROLON
1693 //----------------------------------------------------------
1699 gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,3);
1701 for(Int_t nrod=1;nrod<18;nrod++){
1702 Float_t angle=innerOpenAngle*(Float_t)nrod;
1704 xc=82.4*TMath::Cos(angle);
1705 yc=82.4*TMath::Sin(angle);
1707 gMC->Gspos("TPSR",nrod,"TDGN",xc,yc,126.95,0,"ONLY");
1708 gMC->Gspos("TPSR",nrod+17,"TDGN",xc,yc,-126.95,0,"ONLY");
1710 xc=254.2*TMath::Cos(angle);
1711 yc=254.2*TMath::Sin(angle);
1713 gMC->Gspos("TPSR",nrod+34,"TDGN",xc,yc,126.95,0,"ONLY");
1714 gMC->Gspos("TPSR",nrod+51,"TDGN",xc,yc,-126.95,0,"ONLY");
1718 //----------------------------------------------------------
1719 // Tpc High Voltage rod - MAKROLON + Copper cable
1720 //----------------------------------------------------------
1722 // rod with cable (Left)
1728 gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1736 gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1744 gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1746 gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1747 gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1749 // rod without cable
1755 gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1759 gMC->Gspos("THVL",1,"TDGN",82.4,0.,-126.95,0,"ONLY");
1760 gMC->Gspos("THVL",2,"TDGN",254.2,0.,-126.95,0,"ONLY");
1762 gMC->Gspos("THVR",1,"TDGN",82.4,0.,126.95,0,"ONLY");
1763 gMC->Gspos("THVR",2,"TDGN",254.2,0.,126.95,0,"ONLY");
1767 gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY");
1769 // services wheel cover -> wheel
1772 gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1773 gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1776 // put the wheel into the TPC
1778 gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1779 gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1781 gMC->Gsord("TPMW",6);
1782 gMC->Gsord("TPLS",3);
1783 gMC->Gsord("TPUS",3);
1784 gMC->Gsord("TDGN",6);
1785 gMC->Gsord("TSSW",6);
1786 gMC->Gsord("TSWC",6);
1788 // put the TPC into ALIC (main mother volume)
1790 gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
1793 } // end of function
1795 //_____________________________________________________________________________
1796 void AliTPCv1::DrawDetector()
1799 // Draw a shaded view of the Time Projection Chamber version 1
1802 // Set everything unseen
1803 gMC->Gsatt("*", "seen", -1);
1805 // Set ALIC mother transparent
1806 gMC->Gsatt("ALIC","SEEN",0);
1808 // Set the volumes visible
1809 gMC->Gsatt("TPC ","SEEN",0);
1810 gMC->Gsatt("TOIN","SEEN",1);
1811 gMC->Gsatt("TOIN","COLO",7);
1812 gMC->Gsatt("TPCR","SEEN",0);
1813 gMC->Gsatt("TOCV","SEEN",1);
1814 gMC->Gsatt("TOCV","COLO",4);
1815 gMC->Gsatt("TSA1","SEEN",0);
1816 gMC->Gsatt("TSA2","SEEN",0);
1817 gMC->Gsatt("TSA3","SEEN",0);
1818 gMC->Gsatt("TSA4","SEEN",0);
1819 gMC->Gsatt("TOFC","SEEN",1);
1820 gMC->Gsatt("TOFC","COLO",4);
1821 gMC->Gsatt("TSA5","SEEN",0);
1822 gMC->Gsatt("TSA6","SEEN",0);
1823 gMC->Gsatt("TSA7","SEEN",0);
1824 gMC->Gsatt("TIIN","COLO",7);
1825 gMC->Gsatt("TIIN","SEEN",1);
1826 gMC->Gsatt("TICL","SEEN",0);
1827 gMC->Gsatt("TSA9","SEEN",0);
1828 gMC->Gsatt("TS10","SEEN",0);
1829 gMC->Gsatt("TS11","SEEN",0);
1830 gMC->Gsatt("TS12","SEEN",0);
1831 gMC->Gsatt("TICR","SEEN",0);
1832 gMC->Gsatt("TS13","SEEN",0);
1833 gMC->Gsatt("TS14","SEEN",0);
1834 gMC->Gsatt("TS15","SEEN",0);
1835 gMC->Gsatt("TS16","SEEN",0);
1836 gMC->Gsatt("TIFC","SEEN",1);
1837 gMC->Gsatt("TIFC","COLO",4);
1838 gMC->Gsatt("TS17","SEEN",0);
1839 gMC->Gsatt("TS18","SEEN",0);
1840 gMC->Gsatt("TS19","SEEN",0);
1841 gMC->Gsatt("TS21","SEEN",0);
1842 gMC->Gsatt("TS22","SEEN",0);
1843 gMC->Gsatt("TS23","SEEN",0);
1844 gMC->Gsatt("TS24","SEEN",0);
1845 gMC->Gsatt("TDGN","SEEN",0);
1846 gMC->Gsatt("TIRC","SEEN",0);
1847 gMC->Gsatt("TIC1","SEEN",1);
1848 gMC->Gsatt("TIPP","SEEN",0);
1849 gMC->Gsatt("TIC3","SEEN",0);
1850 gMC->Gsatt("TRCE","SEEN",0);
1851 gMC->Gsatt("TPSC","SEEN",0);
1852 gMC->Gsatt("TPCC","SEEN",0);
1853 gMC->Gsatt("TORC","SEEN",0);
1854 gMC->Gsatt("TOPP","SEEN",0);
1855 gMC->Gsatt("TOC3","SEEN",0);
1856 gMC->Gsatt("TOC1","SEEN",1);
1857 gMC->Gsatt("TSSW","SEEN",1);
1858 gMC->Gsatt("TSWC","SEEN",1);
1859 gMC->Gsatt("TSCE","SEEN",1);
1860 gMC->Gsatt("TSSW","COLO",3);
1861 gMC->Gsatt("TSWC","COLO",3);
1862 gMC->Gsatt("TSCE","COLO",6);
1863 gMC->Gsatt("TWES","SEEN",0);
1864 gMC->Gsatt("TSWB","SEEN",0);
1865 gMC->Gsatt("TPEL","SEEN",0);
1866 gMC->Gsatt("TPMW","SEEN",1);
1867 gMC->Gsatt("TPEW","SEEN",1);
1868 gMC->Gsatt("TESR","SEEN",1);
1869 gMC->Gsatt("TPMW","COLO",12);
1870 gMC->Gsatt("TPEW","COLO",12);
1871 gMC->Gsatt("TWES","COLO",5);
1872 gMC->Gsatt("TIC1","COLO",5);
1873 gMC->Gsatt("TOC1","COLO",5);
1874 gMC->Gsatt("TESB","SEEN",0);
1875 gMC->Gsatt("TPLS","SEEN",0);
1876 gMC->Gsatt("TPUS","SEEN",0);
1877 gMC->Gsatt("TPSS","SEEN",0);
1878 gMC->Gsatt("THVM","SEEN",1);
1879 gMC->Gsatt("THVM","COLO",11);
1880 gMC->Gsatt("TPSR","SEEN",0);
1881 gMC->Gsatt("THVL","SEEN",0);
1882 gMC->Gsatt("THVC","SEEN",0);
1883 gMC->Gsatt("THVE","SEEN",0);
1884 gMC->Gsatt("THVR","SEEN",0);
1886 gMC->Gdopt("hide", "on");
1887 gMC->Gdopt("shad", "on");
1888 gMC->Gsatt("*", "fill", 7);
1889 gMC->SetClipBox(".");
1890 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1891 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1892 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1893 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1894 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1895 gMC->DefaultRange();
1896 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1897 gMC->Gdhead(1111, "Time Projection Chamber");
1898 gMC->Gdman(18, 4, "MAN");
1899 gMC->Gdopt("hide","off");
1902 //_____________________________________________________________________________
1903 void AliTPCv1::CreateMaterials()
1906 // Define materials for Time Projection Chamber
1908 AliTPC::CreateMaterials();
1911 //_____________________________________________________________________________
1912 void AliTPCv1::Init()
1915 // Initialises TPC detector after it has been created
1918 fIdSens=gMC->VolId("TPSS"); // sensitive strip
1919 fIdLSec=gMC->VolId("TPLS"); // lower sector
1920 fIdUSec=gMC->VolId("TPUS"); // upper sector
1922 printf("TPC version 1 initialized\n");
1925 //_____________________________________________________________________________
1926 void AliTPCv1::StepManager()
1929 // Called at every step in the Time Projection Chamber
1937 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1940 // Only charged tracks entering the sensitive volume
1943 id = gMC->CurrentVolID(copy);
1947 // sensitive volume (strip)
1949 vol[1]= copy-1; // row number (absolute)
1953 id = gMC->CurrentVolOffID(1,copy);
1959 vol[0] = copy-1; // sector number
1966 vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
1967 vol[1] -= fTPCParam->GetNRowLow(); // row number
1973 // because Jouri wants to have this
1975 gMC->TrackMomentum(p);
1979 hits[3]=0.; // this hit has no energy loss
1980 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1982 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1984 gMC->TrackPosition(p);
1988 hits[3]=0.; // this hit has no energy loss
1989 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1991 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1995 gMC->TrackPosition(p);
1996 for(i=0;i<3;++i) hits[i]=p[i];
1997 hits[3]=1; //I'd like to have something positive here (I.Belikov)
1998 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2000 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
2007 //_____________________________________________________________________________