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 1.29 2001/02/09 00:05:31 nilsen
19 Added fMajor/MinorVersion variables and made other changes to better make
20 use of the new code changes in AliITSgeom related classes.
22 Revision 1.28 2001/02/02 23:57:28 nilsen
23 Added include file that are no londer included in AliITSgeom.h
25 Revision 1.27 2001/01/30 09:23:13 hristov
26 Streamers removed (R.Brun)
28 Revision 1.26 2000/11/30 11:13:11 barbera
29 Added changes suggested by Federico Carminati on nov, 30, 2000
31 Revision 1.25 2000/10/05 20:50:00 nilsen
32 Now using root generated streamers.
34 Revision 1.14.4.12 2000/10/02 16:04:03 barbera
35 Forward declarations added
37 Revision 1.22 2000/07/10 16:07:19 fca
38 Release version of ITS code
40 Revision 1.14.4.4 2000/05/19 10:10:21 nilsen
41 fix for bug with HP and Sun unix + fix for event display in ITS-working branch
43 Revision 1.14.4.3 2000/03/04 23:46:38 nilsen
44 Fixed up the comments/documentation.
46 Revision 1.14.4.2 2000/03/02 21:53:02 nilsen
47 To make it compatable with the changes in AliRun/AliModule.
49 Revision 1.14.4.1 2000/01/12 19:03:33 nilsen
50 This is the version of the files after the merging done in December 1999.
51 See the ReadMe110100.txt file for details
53 Revision 1.14 1999/10/22 08:16:49 fca
54 Correct destructors, thanks to I.Hrivnacova
56 Revision 1.13 1999/10/06 10:15:19 fca
57 Correct bug in allocation of layer name and add destructor
59 Revision 1.12 1999/10/05 08:05:09 fca
60 Minor corrections for uninitialised variables.
62 Revision 1.11 1999/09/29 09:24:20 fca
63 Introduction of the Copyright and cvs Log
67 ///////////////////////////////////////////////////////////////////////////////
69 // Inner Traking System version 5
70 // This class contains the base procedures for the Inner Tracking System
72 // Authors: R. Barbera, B. S. Nilsen.
74 // Created September 17 1999.
76 ///////////////////////////////////////////////////////////////////////////////
82 #include <TGeometry.h>
85 #include <TFile.h> // only required for Tracking function?
87 #include <TObjArray.h>
88 #include <TLorentzVector.h>
89 #include <TObjString.h>
90 #include <TClonesArray.h>
96 #include "../TGeant3/TGeant3.h"
97 #include "AliITShit.h"
98 #include "AliITSGeant3Geometry.h"
100 #include "AliITSv5.h"
101 #include "AliITSgeom.h"
102 #include "AliITSgeomSPD.h"
103 #include "AliITSgeomSDD.h"
104 #include "AliITSgeomSSD.h"
108 //_____________________________________________________________________________
109 AliITSv5::AliITSv5() {
110 ////////////////////////////////////////////////////////////////////////
111 // Standard default constructor for the ITS version 5.
112 ////////////////////////////////////////////////////////////////////////
118 fEuclidOut = kFALSE; // Don't write Euclide file
119 fGeomDetOut = kFALSE; // Don't write .det file
120 fGeomDetIn = kTRUE; // Read .det file
121 fGeomOldDetIn = kTRUE; // Read old formatted .det file
122 fMajorVersion = IsVersion();
124 for(i=0;i<60;i++) fRead[i] = '\0';
125 for(i=0;i<60;i++) fWrite[i] = '\0';
126 for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
128 //_____________________________________________________________________________
129 AliITSv5::AliITSv5(const char *name, const char *title) : AliITS(name, title){
130 ////////////////////////////////////////////////////////////////////////
131 // Standard constructor for the ITS version 5.
132 ////////////////////////////////////////////////////////////////////////
136 fIdName = new TString[fIdN];
143 fIdSens = new Int_t[fIdN];
144 for (i=0;i<fIdN;i++) fIdSens[i] = 0;
145 fEuclidOut = kFALSE; // Don't write Euclide file
146 fGeomDetOut = kFALSE; // Don't write .det file
147 fGeomDetIn = kTRUE; // Read .det file
148 fGeomOldDetIn = kTRUE; // Read old formatted .det file
149 fMajorVersion = IsVersion();
151 for(i=0;i<60;i++) fRead[i] = '\0';
152 for(i=0;i<60;i++) fWrite[i] = '\0';
154 fEuclidMaterial = "$ALICE_ROOT/Euclid/ITSgeometry_5.tme";
155 fEuclidGeometry = "$ALICE_ROOT/Euclid/ITSgeometry_5.euc";
156 strncpy(fEuclidGeomDet,"$ALICE_ROOT/ITS/ITSgeometry_v5.det",60);
157 strncpy(fRead,fEuclidGeomDet,60);
158 strncpy(fWrite,fEuclidGeomDet,60);
160 //____________________________________________________________________________
161 AliITSv5::AliITSv5(const AliITSv5 &source){
162 ////////////////////////////////////////////////////////////////////////
163 // Copy Constructor for ITS version 5.
164 ////////////////////////////////////////////////////////////////////////
165 if(&source == this) return;
166 Warning("Copy Constructor","Not allowed to copy AliITSv5");
169 //_____________________________________________________________________________
170 AliITSv5& AliITSv5::operator=(const AliITSv5 &source){
171 ////////////////////////////////////////////////////////////////////////
172 // Assignment operator for the ITS version 5.
173 ////////////////////////////////////////////////////////////////////////
175 if(&source == this) return *this;
176 Warning("= operator","Not allowed to copy AliITSv5");
180 //_____________________________________________________________________________
181 AliITSv5::~AliITSv5() {
182 ////////////////////////////////////////////////////////////////////////
183 // Standard destructor for the ITS version 5.
184 ////////////////////////////////////////////////////////////////////////
186 //______________________________________________________________________
187 void AliITSv5::BuildGeometry(){
188 ////////////////////////////////////////////////////////////////////////
189 // Geometry builder for the ITS version 5.
190 ////////////////////////////////////////////////////////////////////////
192 // Build ITS TNODE geometry for event display using detailed geometry.
193 // This function builds a simple ITS geometry used by the ROOT macro
198 //const int kColorITSSPD=kRed;
199 //const int kColorITSSDD=kGreen;
200 const int kColorITSSSD=kBlue;
202 AliITSgeom *gm = this->GetITSgeom();
204 top=gAlice->GetGeometry()->GetNode("alice");
213 //TCanvas *c1 = new TCanvas("c1","ITS");
215 for(lay=1;lay<=2;lay++)
216 for(lad=1;lad<=gm->GetNladders(lay);lad++)
217 for(det=1;det<=gm->GetNdetectors(lay);det++){
219 box = new TBRIK ("ActiveSPD","Active volume of SPD","SPD SI DET",
222 cout << "EXCEPTION in box = new TBRIK" << endl;
225 gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
226 gm->GetRotMatrix(lay,lad,det,rt);
227 //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
228 for(i=0;i<9;i++) rtd[i] = rt[i];
230 rm = new TRotMatrix(name,name,rtd);
232 cout << "EXCEPTION in new TRotMatrix" << endl;
236 //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det);
238 nd = new TNode("SPD"," ",box,xg[0],xg[1],xg[2],rm);
240 cout << "EXCEPTION in new TNode" << endl;
243 nd->SetLineColor(kColorITSSSD);
247 for(lay=3;lay<=3;lay++)
248 for(lad=1;lad<=gm->GetNladders(lay);lad++)
249 for(det=1;det<=gm->GetNdetectors(lay);det++){
251 box = new TBRIK ("ActiveSDD","Active volume of SDD","SDD SI DET",
254 cout << "EXCEPTION in box = new TBRIK" << endl;
257 gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
258 gm->GetRotMatrix(lay,lad,det,rt);
259 //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
260 for(i=0;i<9;i++) rtd[i] = rt[i];
262 rm = new TRotMatrix(name,name,rtd);
264 cout << "EXCEPTION in new TRotMatrix" << endl;
268 //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det);
270 nd = new TNode("SDD"," ",box,xg[0],xg[1],xg[2],rm);
272 cout << "EXCEPTION in new TNode" << endl;
275 nd->SetLineColor(kColorITSSSD);
279 for(lay=4;lay<=4;lay++)
280 for(lad=1;lad<=gm->GetNladders(lay);lad++)
281 for(det=1;det<=gm->GetNdetectors(lay);det++){
283 box = new TBRIK ("ActiveSDD","Active volume of SDD","SDD SI DET",
286 cout << "EXCEPTION in box = new TBRIK" << endl;
289 gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
290 gm->GetRotMatrix(lay,lad,det,rt);
291 //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
292 for(i=0;i<9;i++) rtd[i] = rt[i];
294 rm = new TRotMatrix(name,name,rtd);
296 cout << "EXCEPTION in new TRotMatrix" << endl;
300 //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det);
302 nd = new TNode("SDD"," ",box,xg[0],xg[1],xg[2],rm);
304 cout << "EXCEPTION in new TNode" << endl;
307 nd->SetLineColor(kColorITSSSD);
310 for(lay=5;lay<=5;lay++)
311 for(lad=1;lad<=gm->GetNladders(lay);lad++)
312 for(det=1;det<=gm->GetNdetectors(lay);det++){
314 box = new TBRIK ("ActiveSSD","Active volume of SSD","SSD SI DET",
317 cout << "EXCEPTION in box = new TBRIK" << endl;
320 gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
321 gm->GetRotMatrix(lay,lad,det,rt);
322 //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
323 for(i=0;i<9;i++) rtd[i] = rt[i];
325 rm = new TRotMatrix(name,name,rtd);
327 cout << "EXCEPTION in new TRotMatrix" << endl;
331 //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det);
333 nd = new TNode("SSD"," ",box,xg[0],xg[1],xg[2],rm);
335 cout << "EXCEPTION in new TNode" << endl;
338 nd->SetLineColor(kColorITSSSD);
342 for(lay=6;lay<=6;lay++)
343 for(lad=1;lad<=gm->GetNladders(lay);lad++)
344 for(det=1;det<=gm->GetNdetectors(lay);det++){
346 box = new TBRIK ("ActiveSSD","Active volume of SSD","SSD SI DET",
349 cout << "EXCEPTION in box = new TBRIK" << endl;
353 gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
354 gm->GetRotMatrix(lay,lad,det,rt);
355 //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
356 for(i=0;i<9;i++) rtd[i] = rt[i];
358 rm = new TRotMatrix(name,name,rtd);
360 cout << "EXCEPTION in new TRotMatrix" << endl;
364 //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det);
366 nd = new TNode("SSD"," ",box,xg[0],xg[1],xg[2],rm);
368 cout << "EXCEPTION in new TNode" << endl;
371 nd->SetLineColor(kColorITSSSD);
377 //_____________________________________________________________________________
378 void AliITSv5::CreateMaterials(){
379 ////////////////////////////////////////////////////////////////////////
380 // Read a file containing the materials for the ITS version 5.
381 ////////////////////////////////////////////////////////////////////////
384 filtmp = gSystem->ExpandPathName(fEuclidMaterial.Data());
386 FILE *file = fopen(filtmp,"r");
389 ReadEuclidMedia(filtmp);
391 Error("CreateMaterials"," THE MEDIA FILE %s DOES NOT EXIST !",filtmp);
395 //_____________________________________________________________________________
396 void AliITSv5::CreateGeometry(){
397 //////////////////////////////////////////////////////////////////////
398 // This is the geometry used for the ITS Pre-TDR and comes from an
399 // Euclid to Geant conversion. The only difference
400 // is in the details of the ITS supports. The detectors elements,
401 // detector numbering, and local and global reference frames are shown in
402 // the following figures.
405 <img src="picts/ITS/its1+2_convention_front_5.gif">
408 <font size=+2 color=red>
409 <p>This shows the front view of the SPDs.
412 <img src="picts/ITS/its1+2_convention_side_5.gif">
415 <font size=+2 color=red>
416 <p>This shows the perspective view of the SPDs.
418 <img src="picts/ITS/its1+2_tree.gif">
421 <font size=+2 color=red>
422 <p>This shows the geometry Tree for the SPDs.
427 <img src="picts/ITS/its3+4_convention_front_5.gif">
430 <font size=+2 color=red>
431 <p>This shows the front view of the SDDs.
434 <img src="picts/ITS/its3+4_convention_side_5.gif">
437 <font size=+2 color=red>
438 <p>This shows the perspective view of the SDDs.
440 <img src="picts/ITS/its3+4_tree.gif">
443 <font size=+2 color=red>
444 <p>This shows the geometry Tree for the SDDs.
449 <img src="picts/ITS/its5+6_convention_front_5.gif">
452 <font size=+2 color=red>
453 <p>This shows the front view of the SSDs.
456 <img src="picts/ITS/its5+6_convention_side_5.gif">
459 <font size=+2 color=red>
460 <p>This shows the perspective view of the SSDs.
463 <img src="picts/ITS/its5+6_tree.gif">
466 <font size=+2 color=red>
467 <p>This shows the geometry Tree for the SSDs.
472 <img src="picts/ITS/its_layer1-6_2.gif">
475 <font size=+2 color=red>
476 <p>This shows the front view of the whole ITS..
480 <img src="picts/ITS/its_layer1-6_1.gif">
483 <font size=+2 color=red>
484 <p>This shows the perspective view of the whole ITS..
488 <img src="picts/ITS/its1-6_tree.gif">
491 <font size=+2 color=red>
492 <p>This shows the geometry Tree for the whole ITS.
499 // Here are shown the details of the ITS support cones and services.
500 // First is a GEANT tree showing the organization of all of the volumes
501 // that make up the ITS supports and services.
504 <img src="picts/ITS/supports_tree.gif">
507 // What follows are a number of figures showing what these support
508 // structures look like.
512 <img src="picts/ITS/supports_3.gif">
515 <font size=+2 color=red>
516 <p>This shows the geometry of the supports for the Drift and Strip layers only.
520 <img src="picts/ITS/supports_2.gif">
523 <font size=+2 color=red>
524 <p>This shows the geometry of the supports for the Drift and Strip layers in front cut out.
528 <img src="picts/ITS/supports_1.gif">
531 <font size=+2 color=red>
532 <p>This shows the geometry of the supports for the Drift and Strip layers in a back cut out..
536 <img src="picts/ITS/suppssd.gif">
539 <font size=+2 color=red>
540 <p>This shows the geometry for the Strip layers supports.
544 <img src="picts/ITS/suppsdd.gif">
547 <font size=+2 color=red>
548 <p>This shows the geometry for the Drift layers supports.
554 // Read a file containing the geometry for the ITS version 5.
555 ////////////////////////////////////////////////////////////////////////
561 filtmp = gSystem->ExpandPathName(fEuclidGeometry.Data());
562 FILE *file = fopen(filtmp,"r");
566 cout << "Ready to read Euclid geometry file" << endl;
567 ReadEuclid(fEuclidGeometry.Data(),topvol);
568 printf("Read in euclid geometries\n");
570 Error("CreateGeometry"," THE GEOM FILE %s DOES NOT EXIST !",
571 fEuclidGeometry.Data());
575 // Place the ITS ghost volume ITSV in its mother volume (ALIC) and make it
578 gMC->Gspos("ITSV",1,"ALIC",0,0,0,0,"ONLY");
580 // Outputs the geometry tree in the EUCLID/CAD format if requested to do so
583 gMC->WriteEuclid("ITSgeometry", "ITSV", 1, 5);
584 } // end if (fEuclidOut)
586 cout << "finished with euclid geometrys" << endl;
588 //______________________________________________________________________
589 void AliITSv5::ReadOldGeometry(const char *filename){
590 // read in the file containing the transformations for the active
591 // volumes for the ITS version 5. This is expected to be in a file
592 // ending in .det. This geometry is kept in the AliITSgeom class.
597 if(fITSgeom!=0) delete fITSgeom;
598 filtmp = gSystem->ExpandPathName(filename);
599 size = strlen(filtmp);
600 if(size>4 && fGeomDetIn){
601 filtmp[size-3] = 'd'; // change from .euc to .det
602 filtmp[size-2] = 'e';
603 filtmp[size-1] = 't';
604 file = fopen(filtmp,"r");
605 if(file){ // if file exists use it to fill AliITSgeom structure.
607 fITSgeom = new AliITSgeom(filtmp);
608 fITSgeom->DefineShapes(3); // if fShape isn't defined define it.
609 // Now define the detector types/shapes.
610 fITSgeom->ReSetShape(kSPD,new AliITSgeomSPD300());
611 fITSgeom->ReSetShape(kSDD,new AliITSgeomSDD300());
612 fITSgeom->ReSetShape(kSSD,new AliITSgeomSSD175());
615 // fill AliITSgeom structure from geant structure just filled above
620 //______________________________________________________________________
621 void AliITSv5::InitAliITSgeom(){
622 // Based on the geometry tree defined in Geant 3.21, this
623 // routine initilizes the Class AliITSgeom from the Geant 3.21 ITS geometry
625 if(!((TGeant3*)gMC)) {
626 Error("InitAliITSgeom",
627 "Wrong Monte Carlo. InitAliITSgeom uses TGeant3 calls");
630 cout << "Reading Geometry transformation directly from Geant 3." << endl;
631 const Int_t nlayers = 6;
632 const Int_t ndeep = 7;
633 Int_t itsGeomTreeNames[nlayers][ndeep],lnam[20],lnum[20];
634 Int_t nlad[nlayers],ndet[nlayers];
636 Float_t par[20],att[20];
637 Int_t npar,natt,idshape,imat,imed;
638 AliITSGeant3Geometry *ig = new AliITSGeant3Geometry();
639 Int_t mod,lay,lad,det,i,j,k;
640 char *names[nlayers][ndeep] = {
641 {"ALIC","ITSV","ITSD","IT12","I132","I186","ITS1"}, // lay=1
642 {"ALIC","ITSV","ITSD","IT12","I132","I131","ITS2"}, // lay=2
643 {"ALIC","ITSV","ITSD","IT34","I004","I302","ITS3"}, // lay=3
644 {"ALIC","ITSV","ITSD","IT34","I005","I402","ITS4"}, // lay=4
645 {"ALIC","ITSV","ITSD","IT56","I565","I562","ITS5"}, // lay=5
646 {"ALIC","ITSV","ITSD","IT56","I569","I566","ITS6"}};// lay=6
647 Int_t itsGeomTreeCopys[nlayers][ndeep] = {{1,1,1,1,10, 2,4}, // lay=1
648 {1,1,1,1,10, 4,4}, // lay=2
649 {1,1,1,1,14, 6,1}, // lay=3
650 {1,1,1,1,22, 8,1}, // lay=4
651 {1,1,1,1,34,23,1}, // lay=5
652 {1,1,1,1,38,26,1}};// lay=6
654 // Sorry, but this is not very pritty code. It should be replaced
655 // at some point with a version that can search through the geometry
657 for(i=0;i<20;i++) lnam[i] = lnum[i] = 0;
658 for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++)
659 itsGeomTreeNames[i][j] = ig->StringToInt(names[i][j]);
661 for(i=0;i<nlayers;i++){
663 for(j=0;j<ndeep;j++) if(itsGeomTreeCopys[i][j]!=0)
664 k *= TMath::Abs(itsGeomTreeCopys[i][j]);
668 if(fITSgeom!=0) delete fITSgeom;
669 nlad[0]=20;nlad[1]=40;nlad[2]=14;nlad[3]=22;nlad[4]=34;nlad[5]=38;
670 ndet[0]=4;ndet[1]=4;ndet[2]=6;ndet[3]=8;ndet[4]=22;ndet[5]=25;
671 fITSgeom = new AliITSgeom(0,6,nlad,ndet,mod);
673 for(lay=1;lay<=nlayers;lay++){
674 for(j=0;j<ndeep;j++) lnam[j] = itsGeomTreeNames[lay-1][j];
675 for(j=0;j<ndeep;j++) lnum[j] = itsGeomTreeCopys[lay-1][j];
677 case 1: case 2: // layers 1 and 2 are a bit special
679 for(j=1;j<=itsGeomTreeCopys[lay-1][4];j++){
681 for(k=1;k<=itsGeomTreeCopys[lay-1][5];k++){
684 for(det=1;det<=itsGeomTreeCopys[lay-1][6];det++){
687 ig->GetGeometry(ndeep,lnam,lnum,t,r,idshape,npar,natt,
689 fITSgeom->CreatMatrix(mod,lay,lad,det,kSPD,t,r);
690 if(!(fITSgeom->IsShapeDefined((Int_t)kSPD)))
691 fITSgeom->ReSetShape(kSPD,
692 new AliITSgeomSPD300());
697 case 3: case 4: case 5: case 6: // layers 3-6
699 for(lad=1;lad<=itsGeomTreeCopys[lay-1][4];lad++){
701 for(det=1;det<=itsGeomTreeCopys[lay-1][5];det++){
704 ig->GetGeometry(7,lnam,lnum,t,r,idshape,npar,natt,
708 fITSgeom->CreatMatrix(mod,lay,lad,det,kSDD,t,r);
709 if(!(fITSgeom->IsShapeDefined(kSDD)))
710 fITSgeom->ReSetShape(kSDD,new AliITSgeomSDD300());
713 fITSgeom->CreatMatrix(mod,lay,lad,det,kSSD,t,r);
714 if(!(fITSgeom->IsShapeDefined(kSSD)))
715 fITSgeom->ReSetShape(kSSD,new AliITSgeomSSD175());
725 //_____________________________________________________________________________
726 void AliITSv5::Init(){
727 ////////////////////////////////////////////////////////////////////////
728 // Initialise the ITS after it has been created.
729 ////////////////////////////////////////////////////////////////////////
734 for(i=0;i<30;i++) cout << "*";cout << " ITSv5_Init ";
735 for(i=0;i<30;i++) cout << "*";cout << endl;
737 if(fITSgeom==0) bg = kTRUE;
738 if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
739 if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
740 if(fGeomDetIn && !fGeomOldDetIn){
741 if(fITSgeom!=0) delete fITSgeom;
742 fITSgeom = new AliITSgeom();
743 fITSgeom->ReadNewFile(fRead);
745 if(fGeomDetIn && fGeomOldDetIn) ReadOldGeometry(fEuclidGeometry.Data());
747 if(!fGeomDetIn) this->InitAliITSgeom();
748 if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
749 if(bg) BuildGeometry(); // call BuildGeometry here if fITSgeom was not
753 for(i=0;i<72;i++) cout << "*";
756 //_____________________________________________________________________________
757 void AliITSv5::StepManager(){
758 ////////////////////////////////////////////////////////////////////////
759 // Called for every step in the ITS, then calles the AliITShit class
760 // creator with the information to be recoreded about that hit.
761 // The value of the macro ALIITSPRINTGEOM if set to 1 will allow the
762 // printing of information to a file which can be used to create a .det
763 // file read in by the routine CreateGeometry(). If set to 0 or any other
764 // value except 1, the default behavior, then no such file is created nor
765 // it the extra variables and the like used in the printing allocated.
766 ////////////////////////////////////////////////////////////////////////
771 TLorentzVector position, momentum;
772 TClonesArray &lhits = *fHits;
776 if(gMC->IsTrackInside()) vol[3] += 1;
777 if(gMC->IsTrackEntering()) vol[3] += 2;
778 if(gMC->IsTrackExiting()) vol[3] += 4;
779 if(gMC->IsTrackOut()) vol[3] += 8;
780 if(gMC->IsTrackDisappeared()) vol[3] += 16;
781 if(gMC->IsTrackStop()) vol[3] += 32;
782 if(gMC->IsTrackAlive()) vol[3] += 64;
784 // Fill hit structure.
785 if(!(gMC->TrackCharge())) return;
787 // Only entering charged tracks
788 if((id = gMC->CurrentVolID(copy)) == fIdSens[0]) {
790 id = gMC->CurrentVolOffID(0,copy);
791 //detector copy in the ladder = 1<->4 (ITS1)
793 gMC->CurrentVolOffID(1,copy1);
794 //ladder copy in the module = 1<->2 (I186)
795 gMC->CurrentVolOffID(2,copy2);
796 //module copy in the layer = 1<->10 (I132)
797 vol[2] = copy1+(copy2-1)*2;//# of ladders in one module = 2
798 } else if(id == fIdSens[1]){
800 id = gMC->CurrentVolOffID(0,copy);
801 //detector copy in the ladder = 1<->4 (ITS2)
803 gMC->CurrentVolOffID(1,copy1);
804 //ladder copy in the module = 1<->4 (I131)
805 gMC->CurrentVolOffID(2,copy2);
806 //module copy in the layer = 1<->10 (I132)
807 vol[2] = copy1+(copy2-1)*4;//# of ladders in one module = 4
808 } else if(id == fIdSens[2]){
810 id = gMC->CurrentVolOffID(1,copy);
811 //detector copy in the ladder = 1<->5 (ITS3 is inside I314)
813 id = gMC->CurrentVolOffID(2,copy);
814 //ladder copy in the layer = 1<->12 (I316)
816 } else if(id == fIdSens[3]){
818 id = gMC->CurrentVolOffID(1,copy);
819 //detector copy in the ladder = 1<->8 (ITS4 is inside I414)
821 id = gMC->CurrentVolOffID(2,copy);
822 //ladder copy in the layer = 1<->22 (I417)
824 }else if(id == fIdSens[4]){
826 id = gMC->CurrentVolOffID(1,copy);
827 //detector copy in the ladder = 1<->23 (ITS5 is inside I562)
829 id = gMC->CurrentVolOffID(2,copy);
830 //ladder copy in the layer = 1<->34 (I565)
832 }else if(id == fIdSens[5]){
834 id = gMC->CurrentVolOffID(1,copy);
835 //detector copy in the ladder = 1<->26 (ITS6 is inside I566)
837 id = gMC->CurrentVolOffID(2,copy);
838 //ladder copy in the layer = 1<->38 (I569)
841 return; // not an ITS volume?
842 } // end if/else if (gMC->CurentVolID(copy) == fIdSens[i])
844 gMC->TrackPosition(position);
845 gMC->TrackMomentum(momentum);
853 hits[7]=gMC->TrackTime();
854 // Fill hit structure with this new hit.
855 new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,hits);