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 1.23 2000/11/14 10:48:57 kowal2
19 Correct material used for TSA4. Thanks to J. Barbosa.
21 Revision 1.22 2000/11/06 17:24:10 kowal2
22 Corrected bug in the outer containment vessel and
23 the outer field cage geometry.
26 Revision 1.21 2000/11/02 16:55:24 kowal2
27 Corrected bug in the inner containment vessel geometry.
30 Revision 1.20 2000/11/02 07:24:11 kowal2
31 Correction in the TPC geometry.
32 Changes due to the new hit structure.
34 Revision 1.19 2000/07/10 20:57:39 hristov
35 Update of TPC code and macros by M.Kowalski
37 Revision 1.18 2000/06/30 12:07:50 kowal2
38 Updated from the TPC-PreRelease branch
40 Revision 1.17.2.4 2000/06/26 07:39:42 kowal2
41 Changes to obey the coding rules
43 Revision 1.17.2.3 2000/06/25 08:38:41 kowal2
44 Splitted from AliTPCtracking
46 Revision 1.17.2.2 2000/06/16 12:58:13 kowal2
47 Changed parameter settings
49 Revision 1.17.2.1 2000/06/09 07:15:07 kowal2
51 Defaults loaded automatically (hard-wired)
52 Optional parameters can be set via macro called in the constructor
54 Revision 1.17 2000/05/15 10:00:30 kowal2
55 Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
57 Revision 1.16 2000/04/17 09:37:33 kowal2
58 removed obsolete AliTPCDigitsDisplay.C
60 Revision 1.15.8.2 2000/04/10 08:29:48 kowal2
62 Different pad geometry for different sectors
63 Updated readouch chambers geometry
65 Revision 1.15.8.1 2000/04/10 07:56:53 kowal2
66 Not used anymore - removed
68 Revision 1.15 1999/11/04 17:28:07 fca
69 Correct barrel part of HV Degrader
71 Revision 1.14 1999/10/08 06:27:23 fca
72 Corrected bug in the HV degrader geometry, thanks to G.Tabary
74 Revision 1.13 1999/10/04 13:39:54 fca
75 Correct array index problem
77 Revision 1.12 1999/09/29 09:24:34 fca
78 Introduction of the Copyright and cvs Log
83 ///////////////////////////////////////////////////////////////////////////////
85 // Time Projection Chamber version 1 -- detailed TPC and fast simulation //
89 <img src="picts/AliTPCv1Class.gif">
94 ///////////////////////////////////////////////////////////////////////////////
97 #include <TGeometry.h>
101 #include "AliTPCv1.h"
103 #include <iostream.h>
105 #include "TLorentzVector.h"
108 #include "AliConst.h"
110 #include "AliTPCParam.h"
111 #include "AliTPCParamSR.h"
112 #include "AliTPCDigitsArray.h"
113 #include <TInterpreter.h>
117 //_____________________________________________________________________________
119 AliTPCv1::AliTPCv1(){
125 //_____________________________________________________________________________
126 AliTPCv1::AliTPCv1(const char *name, const char *title)
127 :AliTPC(name, title) {
129 // Standard constructor for Time Projection Chamber
131 fIdSens=fIdLSec=fIdUSec=0;
133 SetGasMixt(2,20,10,-1,0.9,0.1,0.);
136 fTPCParam->Write(fTPCParam->GetTitle());
141 //_____________________________________________________________________________
142 void AliTPCv1::CreateGeometry()
144 //-------------------------------------------------------------
145 // Creates geometry for Time Projection Chamber version 1
146 // Detailed geometry -- Fast simulation - space points
147 // at the pad-rows centers
148 // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
149 //-----------------------------------------------------------
153 <img src="picts/AliTPC.gif">
158 <img src="picts/AliTPCv1Tree.gif">
163 Int_t *idtmed = fIdtmed->GetArray(); // TPC media
165 Int_t idrotm[120]; // rotation matrices
167 Int_t nRotMat = 0; // actual number of rotation matrices
171 // Mother volume (Air) - all volumes will be positioned in it
251 gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,39);
254 //-------------------------------------------------------------------
255 // Tpc Outer INsulator (CO2)
256 //-------------------------------------------------------------------
295 gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
297 //---------------------------------------------------------------
298 // shreds (G10) - TPC Rings
299 //---------------------------------------------------------------
301 gMC->Gsvolu("TPCR","TUBE",idtmed[12],dm,0);
307 gMC->Gsposp("TPCR",1,"TOIN",0.,0.,-253.3,0,"ONLY",dm,3); // left bottom
315 gMC->Gsposp("TPCR",2,"TOIN",0.,0.,253.3,0,"ONLY",dm,3); // right
323 gMC->Gsposp("TPCR",3,"TOIN",0.,0.,-250.7,0,"ONLY",dm,3); // left top
325 //----------------------------------------------------------------
326 // Tpc Outer Contaiment Vessel
327 // mother volume - Al, daughters - composite (sandwich)
328 //----------------------------------------------------------------
369 gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
373 // Tpc SAndwich 1 - Al
379 gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
381 // Tpc SAndwich 2 - Tedlar
386 gMC->Gsvolu("TSA2","TUBE",idtmed[9],dm,3);
388 // Tpc SAndwich 3 - Kevlar
393 gMC->Gsvolu("TSA3","TUBE",idtmed[5],dm,3);
395 // Tpc SAndwich 4 - NOMEX honeycomb
400 gMC->Gsvolu("TSA4","TUBE",idtmed[6],dm,3);
404 gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
405 gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
406 gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
408 gMC->Gspos("TSA1",1,"TOCV",0.,0.,2.6,0,"ONLY");
412 gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
414 //-------------------------------------------------------
415 // Tpc Outer Field Cage
416 // mother volume - Al, daughters - composite (sandwich)
417 //-------------------------------------------------------
457 gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
461 // Tpc SAndwich 5 - Tedlar
467 gMC->Gsvolu("TSA5","TUBE",idtmed[9],dm,3);
469 // Tpc SAndwich 6 - Kevlar
474 gMC->Gsvolu("TSA6","TUBE",idtmed[5],dm,3);
477 // Tpc SAndwich 7 - NOMEX
482 gMC->Gsvolu("TSA7","TUBE",idtmed[6],dm,3);
486 gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
487 gMC->Gspos("TSA6",1,"TSA5",0.,0.,0.,0,"ONLY");
489 gMC->Gspos("TSA5",1,"TOFC",0.,0.,0.,0,"ONLY");
493 gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
497 gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
499 //--------------------------------------------------------------------
500 // Tpc Inner INsulator (CO2)
501 //--------------------------------------------------------------------
516 Float_t tanL = (66.2-59.0)/(255.6-73.3); // tangent of the left cone part
519 dm[7]= 59.0+ (253.6-73.3)*tanL;
600 gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,48);
603 //--------------------------------------------------------------------
604 // Tpc Inner Containment vessel, Left part
605 // mother volume - Al, daughter - composite (sandwich)
606 //--------------------------------------------------------------------
620 Float_t cosL = 1./TMath::Sqrt(1.+tanL*tanL);
621 Float_t sandThick = 2.14; // cone composite thickness
627 dm[7]= 59.0 + (253.6-73.3)*tanL;
634 dm[11]= dm[7]+sandThick/cosL;
639 dm[13]= 59.0+(75.6-73.3)*tanL;
640 dm[14]= dm[13]+sandThick/cosL;
666 gMC->Gsvolu("TICL","PCON",idtmed[4],dm,27);
670 // Tpc SAndwich 9 - Al
679 dm[4]= 59.0+(254.3-73.3)*tanL;
680 dm[5]= dm[4]+sandThick/cosL;
685 dm[7]= 59.0+(78.3-73.3)*tanL;
686 dm[8]= dm[7]+sandThick/cosL;
690 gMC->Gsvolu("TSA9","PCON",idtmed[4],dm,9);
692 // Tpc SAndwich 10 - Tedlar
702 gMC->Gsvolu("TS10","PCON",idtmed[9],dm,9);
704 // Tpc SAndwich 11 - Kevlar
714 gMC->Gsvolu("TS11","PCON",idtmed[5],dm,9);
716 // Tpc SAndwich 12 - NOMEX
726 gMC->Gsvolu("TS12","PCON",idtmed[6],dm,9);
730 gMC->Gspos("TS12",1,"TS11",0.,0.,0.,0,"ONLY");
731 gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
732 gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
736 gMC->Gspos("TSA9",1,"TICL",0.,0.,0.,0,"ONLY");
738 //--------------------------------------------------------------------
739 // Tpc Inner Containment vessel, Right part
740 // mother volume - Al, daughter - composite (sandwich)
741 //--------------------------------------------------------------------
767 Float_t tanR = (66.0-59.0)/(250.5-73.3); // to avoid accuracy problems
768 Float_t cosR = 1./TMath::Sqrt(1.+tanR*tanR); //as above
773 dm[13]= 59.0+(75.6-73.3)*tanR;
780 dm[17]= dm[16]+sandThick/cosR;
785 dm[19]= 59.0+(248.4-73.3)*tanR;
786 dm[20]= dm[19]+sandThick/cosR;
800 gMC->Gsvolu("TICR","PCON",idtmed[4],dm,27);
806 // Tpc SAndwich 13 - Al
815 dm[4]= 59.0+(78.3-73.3)*tanR;
816 dm[5]= dm[4]+sandThick/cosR;
821 dm[7]= 59.0+(249.1-73.3)*tanR;
822 dm[8]= dm[7]+sandThick/cosR;
826 gMC->Gsvolu("TS13","PCON",idtmed[4],dm,9);
828 // Tpc SAndwich 14 - Tedlar
838 gMC->Gsvolu("TS14","PCON",idtmed[9],dm,9);
840 // Tpc SAndwich 15 - Kevlar
850 gMC->Gsvolu("TS15","PCON",idtmed[5],dm,9);
852 // Tpc SAndwich 16 - NOMEX
862 gMC->Gsvolu("TS16","PCON",idtmed[6],dm,9);
866 gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
867 gMC->Gspos("TS15",1,"TS14",0.,0.,0.,0,"ONLY");
868 gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
872 gMC->Gspos("TS13",1,"TICR",0.,0.,0.,0,"ONLY");
874 //------------------------------------------------------
875 // Tpc Inner Field Cage
876 // mother volume - Al, daughters - composite (sandwich)
877 //------------------------------------------------------
919 gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,21);
923 // Tpc Sandwich 17 - Tedlar
929 gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
931 // Tpc Sandwich 18 - Kevlar
936 gMC->Gsvolu("TS18","TUBE",idtmed[5],dm,3);
939 // Tpc Sandwich 19 - NOMEX
944 gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
948 gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
949 gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
953 gMC->Gspos("TS17",1,"TIFC",0.,0.,0.,0,"ONLY");
961 gMC->Gsposp("TPCR",4,"TIIN",0.,0.,-253.3,0,"ONLY",dm,3);
966 gMC->Gsposp("TPCR",5,"TIIN",0.,0.,250.7,0,"ONLY",dm,3);
971 gMC->Gsposp("TPCR",6,"TIIN",0.,0.,253.3,0,"ONLY",dm,3);
975 gMC->Gspos("TICL",1,"TIIN",0.,0.,0.,0,"ONLY");
979 gMC->Gspos("TICR",1,"TIIN",0.,0.,0.,0,"ONLY");
983 gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
985 // Tpc Sandwich 21 - Al (central barrel)
991 gMC->Gsvolu("TS21","TUBE",idtmed[4],dm,3);
993 // Tpc Sandwich 22 - Tedlar (central barrel)
998 gMC->Gsvolu("TS22","TUBE",idtmed[9],dm,3);
1000 // Tpc Sandwich 23 - Kevlar (central barrel)
1005 gMC->Gsvolu("TS23","TUBE",idtmed[5],dm,3);
1007 // Tpc Sandwich 24 - NOMEX (central barrel)
1012 gMC->Gsvolu("TS24","TUBE",idtmed[6],dm,3);
1016 gMC->Gspos("TS24",1,"TS23",0.,0.,0.,0,"ONLY");
1017 gMC->Gspos("TS23",1,"TS22",0.,0.,0.,0,"ONLY");
1018 gMC->Gspos("TS22",1,"TS21",0.,0.,0.,0,"ONLY");
1020 gMC->Gspos("TS21",1,"TIIN",0.,0.,0.,0,"ONLY");
1022 // put everything into the TPC
1024 gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
1027 //---------------------------------------------------------
1028 // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
1029 // and its daughters (HV membrane, rods, readout chambers)
1030 //---------------------------------------------------------
1036 gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3);
1038 // sector opening angles
1040 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
1041 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1043 // sector angle shift
1045 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
1047 // number of sectors
1049 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
1050 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
1052 // All above parameters are identical for inner and outer
1053 // sectors. The distinction is kept for the historical reasons
1054 // and eventually will disappear.
1056 Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
1057 Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
1060 //-------------------------------------------------------------------------
1061 // Tpc Inner Readout Chambers
1062 //-------------------------------------------------------------------------
1066 dm[2]= 1.6; // thickness
1069 gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
1071 // this volume will be positioned in the empty space
1072 // of the end-cap to avoid overlaps
1079 gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
1082 //------------------------------------------------
1083 // Tpc Inner readout chamber Pad Plane
1084 //------------------------------------------------
1091 gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
1095 dm[0] -= 1.218511934;
1096 dm[1] -= 1.218511934;
1099 gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
1101 gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
1103 gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
1106 //----------------------------------------------
1107 // Tpc Readout Chambers Empty spaces - for both
1108 // inner and outer sectors
1109 //----------------------------------------------
1111 gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
1113 // Inner sector - 4 spaces
1124 space = rr*tanAlpha-dm[0];
1126 for(Int_t nsLow=0;nsLow<4;nsLow++){
1129 dm[1]= rr*tanAlpha - space;
1133 gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1139 gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1142 dm[0] = rr*tanAlpha - space;
1148 // dm[1] - this is the dm[1] from the previous TRCE
1152 gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
1155 // TPc Space for Connectors
1162 gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1170 gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
1172 gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1180 Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
1182 // inner part of the inner sector - 2 x 20 holes
1184 astep = 20.00096874/19.;
1186 alpha = 10.00048437-astep;
1198 for(ncon=0;ncon<20;ncon++){
1204 phi3 = (alpha>0) ? 0. : 180.;
1205 theta3 = TMath::Abs(alpha);
1207 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1211 gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1212 gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1223 // outer part of the inner sector - 2 x 25 holes
1225 astep = 20.00096874/24.;
1226 alpha = 10.00048437-astep;
1234 for(ncon=0;ncon<25;ncon++){
1240 phi3 = (alpha>0) ? 0. : 180.;
1241 theta3 = TMath::Abs(alpha);
1243 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1247 gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1248 gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1259 //--------------------------------------------------------------------------
1260 // TPC Outer Readout Chambers
1261 // this is NOT a final design
1262 //--------------------------------------------------------------------------
1266 dm[2]= 1.5; //thickness
1269 gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1271 //------------------------------------------------
1272 // Tpc Outer readout chamber Pad Plane
1273 //------------------------------------------------
1277 gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1279 dm[0] -= 1.218511934;
1280 dm[1] -= 1.218511934;
1283 gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1285 gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1287 gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1297 gMC->Gsposp("TRCE",11,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1304 gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1312 gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1315 //-----------------------------------------------
1316 // Tpc Services Support Wheel
1317 //-----------------------------------------------
1332 gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1334 // Tpc Services Wheel Cover
1339 gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1341 // Tpc Service wheel Cover Empty space
1348 gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1350 // Tpc services Wheel Empty Spaces
1357 gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1359 // Tpc Services Wheel Bars
1361 gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1371 gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1376 gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1378 // TPc ELectronics - right now 30% X0 Si
1385 gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1386 gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1388 //--------------------------------------------------------------------------
1390 //--------------------------------------------------------------------------
1392 // TPc Main Wheel - Al
1398 gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1400 // TPc Extra Wheel (to avoid overlapping) - Al
1406 gMC->Gsvolu("TPEW","TUBE",idtmed[4],dm,3);
1408 //--------------------------------------------------------------------------
1409 // Tpc Empty Space for the Readout chambers
1410 //--------------------------------------------------------------------------
1414 Float_t dR = 0.5*(rUp-rLow);
1416 space= 1.4/cosAlpha; // wheel ribs are 2.8 cm wide
1418 dm[0]= rLow*tanAlpha-space;
1419 dm[1]= rUp*tanAlpha-space;
1423 gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1428 gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1433 gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1435 // Tpc Empty Space Bars - Al (daughters of TESR)
1439 gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1443 dm[0]= rLow*tanAlpha-space;
1444 dm[1]= 88.7*tanAlpha-space;
1450 gMC->Gsposp("TESB",1,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1454 dm[0]= 131.65*tanAlpha-space;
1455 dm[1]= 136.5*tanAlpha-space;
1458 zBar = -dR +131.65+dm[3]-rLow;
1460 gMC->Gsposp("TESB",2,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1464 dm[0]= 240.4*tanAlpha-space;
1465 dm[1]= rUp*tanAlpha-space;
1470 gMC->Gsposp("TESB",3,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1472 //------------------------------------------------------
1473 // TPc Lower "S" Sectors
1474 //------------------------------------------------------
1479 Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1480 Float_t inSecUpEdge = fTPCParam->GetInnerRadiusUp();
1482 dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1483 dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1484 dm[2] = 0.5*(250. - 0.3);
1485 dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);
1487 gMC->Gsvolu("TPLS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1489 //----------------------------------------------------------
1490 // TPc Upper Sectors
1491 //----------------------------------------------------------
1493 Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1494 Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1496 dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1497 dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1498 dm[2] = 0.5*(250. - 0.3);
1499 dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1501 gMC->Gsvolu("TPUS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1503 //--------------------------------------------------------
1504 // TPc Sensitive Strips, the same for S and L sectors
1505 //--------------------------------------------------------
1507 gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1509 Int_t nofStrips,nstr;
1511 Float_t stripThick = 0.01; // 100 microns
1515 nofStrips = fTPCParam->GetNRowLow();
1516 deadSpace = fTPCParam->GetInnerWireMount();
1518 dm[2] = 0.5*(250. - 0.3);
1519 dm[3] = 0.5 * stripThick;
1521 for(nstr=0;nstr<nofStrips;nstr++){
1523 r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1524 r2 = r1 + stripThick;
1525 dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1526 dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1527 zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1531 gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1535 Int_t nsSave = nofStrips;
1539 nofStrips = fTPCParam->GetNRowUp();
1540 deadSpace = fTPCParam->GetOuterWireMount();
1542 dm[2] = 0.5*(250. - 0.3);
1543 dm[3] = 0.5 * stripThick;
1545 for(nstr=0;nstr<nofStrips;nstr++){
1547 r1 = fTPCParam->GetPadRowRadiiUp(nstr);
1548 r2 = r1 + stripThick;
1549 dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1550 dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1551 zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1555 gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1560 //-------------------------------------------------------
1561 // positioning of the empty spaces into the main wheel
1562 // and readout chambers and sectors into the drift gas
1563 //-------------------------------------------------------
1565 Float_t rCenter,xc,yc;
1566 Float_t rInner,rOuter; // center of the inner and outer chamber
1573 for(Int_t ns=0; ns<nInnerSector;ns++){
1575 phi1 = ns * innerOpenAngle + innerAngleShift;
1576 phi1 *= kRaddeg; // in degrees
1578 phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1580 if (phi1 > 360.) phi1 -= 360.;
1585 phi3 = ns * innerOpenAngle + innerAngleShift;
1586 phi3 *= kRaddeg; // in degrees
1588 phi3 = (Float_t)TMath::Nint(phi3);
1590 if(phi3 > 360.) phi3 -= 360.;
1594 // "holes"->End plate
1596 xc = rCenter*TMath::Cos(phi3*kDegrad);
1597 yc = rCenter*TMath::Sin(phi3*kDegrad);
1599 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1601 gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1603 // TSCE->TSWC (services wheel volumes)
1605 xc = 166.142*TMath::Cos(phi3*kDegrad);
1606 yc = 166.142*TMath::Sin(phi3*kDegrad);
1608 gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1609 gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1612 // readout chambers->TDGN (drift gas)
1614 xc = rInner*TMath::Cos(phi3*kDegrad);
1615 yc = rInner*TMath::Sin(phi3*kDegrad);
1617 gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1619 // here lower sectors
1621 gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1622 gMC->Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1624 xc = rOuter*TMath::Cos(phi3*kDegrad);
1625 yc = rOuter*TMath::Sin(phi3*kDegrad);
1627 gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1629 // here upper sectors
1631 gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1632 gMC->Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1636 theta2 = 0.; // reflection
1638 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1640 xc = rInner*TMath::Cos(phi3*kDegrad);
1641 yc = rInner*TMath::Sin(phi3*kDegrad);
1643 gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1645 xc = rOuter*TMath::Cos(phi3*kDegrad);
1646 yc = rOuter*TMath::Sin(phi3*kDegrad);
1648 gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1654 // reflection matrix
1663 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1668 gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1669 gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[nRotMat],"ONLY");
1670 gMC->Gspos("TPEW",1,"TPC ",0.,0.,257.65,0,"ONLY");
1671 gMC->Gspos("TPEW",2,"TPC ",0.,0.,-257.5,0,"ONLY");
1675 //-------------------------------------------------------
1676 // Tpc High Voltage Membrane - NOMEX honeycomb
1677 //-------------------------------------------------------
1696 gMC->Gsvolu("THVM","PGON",idtmed[6],dm,10);
1698 gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1700 //----------------------------------------------------------
1701 // TPc Support Rods - MAKROLON
1702 //----------------------------------------------------------
1708 gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,3);
1710 for(Int_t nrod=1;nrod<18;nrod++){
1711 Float_t angle=innerOpenAngle*(Float_t)nrod;
1713 xc=82.4*TMath::Cos(angle);
1714 yc=82.4*TMath::Sin(angle);
1716 gMC->Gspos("TPSR",nrod,"TDGN",xc,yc,126.95,0,"ONLY");
1717 gMC->Gspos("TPSR",nrod+17,"TDGN",xc,yc,-126.95,0,"ONLY");
1719 xc=254.2*TMath::Cos(angle);
1720 yc=254.2*TMath::Sin(angle);
1722 gMC->Gspos("TPSR",nrod+34,"TDGN",xc,yc,126.95,0,"ONLY");
1723 gMC->Gspos("TPSR",nrod+51,"TDGN",xc,yc,-126.95,0,"ONLY");
1727 //----------------------------------------------------------
1728 // Tpc High Voltage rod - MAKROLON + Copper cable
1729 //----------------------------------------------------------
1731 // rod with cable (Left)
1737 gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1745 gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1753 gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1755 gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1756 gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1758 // rod without cable
1764 gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1768 gMC->Gspos("THVL",1,"TDGN",82.4,0.,-126.95,0,"ONLY");
1769 gMC->Gspos("THVL",2,"TDGN",254.2,0.,-126.95,0,"ONLY");
1771 gMC->Gspos("THVR",1,"TDGN",82.4,0.,126.95,0,"ONLY");
1772 gMC->Gspos("THVR",2,"TDGN",254.2,0.,126.95,0,"ONLY");
1776 gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY");
1778 // services wheel cover -> wheel
1781 gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1782 gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1785 // put the wheel into the TPC
1787 gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1788 gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1790 gMC->Gsord("TPMW",6);
1791 gMC->Gsord("TPLS",3);
1792 gMC->Gsord("TPUS",3);
1793 gMC->Gsord("TDGN",6);
1794 gMC->Gsord("TSSW",6);
1795 gMC->Gsord("TSWC",6);
1797 // put the TPC into ALIC (main mother volume)
1799 gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
1802 } // end of function
1804 //_____________________________________________________________________________
1805 void AliTPCv1::DrawDetector()
1808 // Draw a shaded view of the Time Projection Chamber version 1
1811 // Set everything unseen
1812 gMC->Gsatt("*", "seen", -1);
1814 // Set ALIC mother transparent
1815 gMC->Gsatt("ALIC","SEEN",0);
1817 // Set the volumes visible
1818 gMC->Gsatt("TPC ","SEEN",0);
1819 gMC->Gsatt("TOIN","SEEN",1);
1820 gMC->Gsatt("TOIN","COLO",7);
1821 gMC->Gsatt("TPCR","SEEN",0);
1822 gMC->Gsatt("TOCV","SEEN",1);
1823 gMC->Gsatt("TOCV","COLO",4);
1824 gMC->Gsatt("TSA1","SEEN",0);
1825 gMC->Gsatt("TSA2","SEEN",0);
1826 gMC->Gsatt("TSA3","SEEN",0);
1827 gMC->Gsatt("TSA4","SEEN",0);
1828 gMC->Gsatt("TOFC","SEEN",1);
1829 gMC->Gsatt("TOFC","COLO",4);
1830 gMC->Gsatt("TSA5","SEEN",0);
1831 gMC->Gsatt("TSA6","SEEN",0);
1832 gMC->Gsatt("TSA7","SEEN",0);
1833 gMC->Gsatt("TIIN","COLO",7);
1834 gMC->Gsatt("TIIN","SEEN",1);
1835 gMC->Gsatt("TICL","SEEN",0);
1836 gMC->Gsatt("TSA9","SEEN",0);
1837 gMC->Gsatt("TS10","SEEN",0);
1838 gMC->Gsatt("TS11","SEEN",0);
1839 gMC->Gsatt("TS12","SEEN",0);
1840 gMC->Gsatt("TICR","SEEN",0);
1841 gMC->Gsatt("TS13","SEEN",0);
1842 gMC->Gsatt("TS14","SEEN",0);
1843 gMC->Gsatt("TS15","SEEN",0);
1844 gMC->Gsatt("TS16","SEEN",0);
1845 gMC->Gsatt("TIFC","SEEN",1);
1846 gMC->Gsatt("TIFC","COLO",4);
1847 gMC->Gsatt("TS17","SEEN",0);
1848 gMC->Gsatt("TS18","SEEN",0);
1849 gMC->Gsatt("TS19","SEEN",0);
1850 gMC->Gsatt("TS21","SEEN",0);
1851 gMC->Gsatt("TS22","SEEN",0);
1852 gMC->Gsatt("TS23","SEEN",0);
1853 gMC->Gsatt("TS24","SEEN",0);
1854 gMC->Gsatt("TDGN","SEEN",0);
1855 gMC->Gsatt("TIRC","SEEN",0);
1856 gMC->Gsatt("TIC1","SEEN",1);
1857 gMC->Gsatt("TIPP","SEEN",0);
1858 gMC->Gsatt("TIC3","SEEN",0);
1859 gMC->Gsatt("TRCE","SEEN",0);
1860 gMC->Gsatt("TPSC","SEEN",0);
1861 gMC->Gsatt("TPCC","SEEN",0);
1862 gMC->Gsatt("TORC","SEEN",0);
1863 gMC->Gsatt("TOPP","SEEN",0);
1864 gMC->Gsatt("TOC3","SEEN",0);
1865 gMC->Gsatt("TOC1","SEEN",1);
1866 gMC->Gsatt("TSSW","SEEN",1);
1867 gMC->Gsatt("TSWC","SEEN",1);
1868 gMC->Gsatt("TSCE","SEEN",1);
1869 gMC->Gsatt("TSSW","COLO",3);
1870 gMC->Gsatt("TSWC","COLO",3);
1871 gMC->Gsatt("TSCE","COLO",6);
1872 gMC->Gsatt("TWES","SEEN",0);
1873 gMC->Gsatt("TSWB","SEEN",0);
1874 gMC->Gsatt("TPEL","SEEN",0);
1875 gMC->Gsatt("TPMW","SEEN",1);
1876 gMC->Gsatt("TPEW","SEEN",1);
1877 gMC->Gsatt("TESR","SEEN",1);
1878 gMC->Gsatt("TPMW","COLO",12);
1879 gMC->Gsatt("TPEW","COLO",12);
1880 gMC->Gsatt("TWES","COLO",5);
1881 gMC->Gsatt("TIC1","COLO",5);
1882 gMC->Gsatt("TOC1","COLO",5);
1883 gMC->Gsatt("TESB","SEEN",0);
1884 gMC->Gsatt("TPLS","SEEN",0);
1885 gMC->Gsatt("TPUS","SEEN",0);
1886 gMC->Gsatt("TPSS","SEEN",0);
1887 gMC->Gsatt("THVM","SEEN",1);
1888 gMC->Gsatt("THVM","COLO",11);
1889 gMC->Gsatt("TPSR","SEEN",0);
1890 gMC->Gsatt("THVL","SEEN",0);
1891 gMC->Gsatt("THVC","SEEN",0);
1892 gMC->Gsatt("THVE","SEEN",0);
1893 gMC->Gsatt("THVR","SEEN",0);
1895 gMC->Gdopt("hide", "on");
1896 gMC->Gdopt("shad", "on");
1897 gMC->Gsatt("*", "fill", 7);
1898 gMC->SetClipBox(".");
1899 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1900 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1901 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1902 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1903 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1904 gMC->DefaultRange();
1905 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1906 gMC->Gdhead(1111, "Time Projection Chamber");
1907 gMC->Gdman(18, 4, "MAN");
1908 gMC->Gdopt("hide","off");
1911 //_____________________________________________________________________________
1912 void AliTPCv1::CreateMaterials()
1915 // Define materials for Time Projection Chamber
1917 AliTPC::CreateMaterials();
1920 //_____________________________________________________________________________
1921 void AliTPCv1::Init()
1924 // Initialises TPC detector after it has been created
1927 fIdSens=gMC->VolId("TPSS"); // sensitive strip
1928 fIdLSec=gMC->VolId("TPLS"); // lower sector
1929 fIdUSec=gMC->VolId("TPUS"); // upper sector
1931 printf("TPC version 1 initialized\n");
1934 //_____________________________________________________________________________
1935 void AliTPCv1::StepManager()
1938 // Called at every step in the Time Projection Chamber
1946 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1949 // Only charged tracks entering the sensitive volume
1952 id = gMC->CurrentVolID(copy);
1956 // sensitive volume (strip)
1958 vol[1]= copy-1; // row number (absolute)
1962 id = gMC->CurrentVolOffID(1,copy);
1968 vol[0] = copy-1; // sector number
1975 vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
1976 vol[1] -= fTPCParam->GetNRowLow(); // row number
1982 // because Jouri wants to have this
1984 gMC->TrackMomentum(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.
1993 gMC->TrackPosition(p);
1997 hits[3]=0.; // this hit has no energy loss
1998 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2000 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
2004 gMC->TrackPosition(p);
2005 for(i=0;i<3;++i) hits[i]=p[i];
2006 hits[3]=1; //I'd like to have something positive here (I.Belikov)
2007 // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2009 AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
2016 //_____________________________________________________________________________