1 /**************************************************************************
2 * Copyright(c) 2007-2009, 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 **************************************************************************/
17 /* $Id: AliITSUv1.cxx */
20 //========================================================================
22 // Geometry for the Upgrade of the Inner Tracking System
24 // Mario Sitta (sitta@to.infn.it)
25 // Chinorat Kobdaj (kobdaj@g.sut.ac.th)
27 //========================================================================
31 // $Log: AliITSUv1.cxx,v $
33 #include <TClonesArray.h>
34 #include <TGeoGlobalMagField.h>
35 #include <TGeoManager.h>
36 #include <TGeoMatrix.h>
37 #include <TGeoPhysicalNode.h>
38 #include <TGeoVolume.h>
41 #include <TLorentzVector.h>
43 #include <TVirtualMC.h>
46 #include "AliITSUHit.h"
51 #include "AliTrackReference.h"
52 #include "AliITSv11Geometry.h"
53 #include "AliITSUv1Layer.h"
54 #include "AliITSUv1.h"
55 #include "AliITSUGeomTGeo.h"
56 #include "AliGeomManager.h"
57 using namespace TMath;
62 //______________________________________________________________________
63 AliITSUv1::AliITSUv1()
81 ,fStaveModelIB(kIBModel0)
82 ,fStaveModelOB(kOBModel0)
84 // Standard default constructor
93 //______________________________________________________________________
94 AliITSUv1::AliITSUv1(const char *title,const Int_t nlay)
113 ,fStaveModelIB(kIBModel0)
114 ,fStaveModelOB(kOBModel0)
116 // Standard constructor for the Upgrade geometry.
118 // const char * name Ignored, set to "ITS"
119 // const char * title Arbitrary title
120 // const Int_t nlay Number of layers
122 fLayerName = new TString[fNLayers];
124 for (Int_t j=0; j<fNLayers; j++)
125 fLayerName[j].Form("%s%d",AliITSUGeomTGeo::GetITSSensorPattern(),j); // See AliITSUv1Layer
127 fLayTurbo = new Bool_t[fNLayers];
128 fLayPhi0 = new Double_t[fNLayers];
129 fLayRadii = new Double_t[fNLayers];
130 fLayZLength = new Double_t[fNLayers];
131 fLaddPerLay = new Int_t[fNLayers];
132 fModPerLadd = new Int_t[fNLayers];
133 fLadThick = new Double_t[fNLayers];
134 fLadWidth = new Double_t[fNLayers];
135 fLadTilt = new Double_t[fNLayers];
136 fDetThick = new Double_t[fNLayers];
137 fDetTypeID = new UInt_t[fNLayers];
138 fBuildLevel = new Int_t[fNLayers];
141 fUpGeom = new AliITSUv1Layer*[fNLayers];
143 if (fNLayers > 0) { // if not, we'll Fatal-ize in CreateGeometry
144 for (Int_t j=0; j<fNLayers; j++) {
159 //______________________________________________________________________
160 AliITSUv1::~AliITSUv1() {
161 // Standard destructor
171 delete [] fLayZLength;
172 delete [] fLaddPerLay;
173 delete [] fModPerLadd;
178 delete [] fDetTypeID;
179 delete [] fBuildLevel;
183 delete [] fWrapZSpan;
186 //______________________________________________________________________
187 void AliITSUv1::AddAlignableVolumes() const{
188 // Creates entries for alignable volumes associating the symbolic volume
189 // name with the corresponding volume path.
191 // Records in the alignable entries the transformation matrices converting
192 // TGeo local coordinates (in the RS of alignable volumes) to the tracking
194 // For this, this function has to run before the misalignment because we
195 // are using the ideal positions in the AliITSgeom object.
203 AliInfo("Add ITS alignable volumes");
205 if (!gGeoManager) { AliFatal("TGeoManager doesn't exist !"); return; }
208 pth = Form("ALIC_1/%s_2",AliITSUGeomTGeo::GetITSVolPattern());
209 // RS: to be checked with MS
210 if( !gGeoManager->SetAlignableEntry(AliITSUGeomTGeo::ComposeSymNameITS(),pth.Data()) )
211 AliFatal(Form("Unable to set alignable entry ! %s :: %s","ITS",pth.Data()));
215 for (int lr=0; lr<fNLayers; lr++) {
217 pth = Form("ALIC_1/%s_2/%s%d_1",AliITSUGeomTGeo::GetITSVolPattern(),AliITSUGeomTGeo::GetITSLayerPattern(),lr);
218 //printf("SetAlignable: %s %s\n",snm.Data(),pth.Data());
219 gGeoManager->SetAlignableEntry(AliITSUGeomTGeo::ComposeSymNameLayer(lr),pth.Data());
221 for (int ld=0; ld<fLaddPerLay[lr]; ld++) {
223 TString pthL = Form("%s/%s%d_%d",pth.Data(),AliITSUGeomTGeo::GetITSLadderPattern(),lr,ld);
224 //printf("SetAlignable: %s %s\n",snmL.Data(),pthL.Data());
225 gGeoManager->SetAlignableEntry(AliITSUGeomTGeo::ComposeSymNameLadder(lr,ld),pthL.Data());
227 for (int md=0; md<fModPerLadd[lr]; md++) {
229 TString pthM = Form("%s/%s%d_%d",pthL.Data(),AliITSUGeomTGeo::GetITSModulePattern(),lr,md);
231 // RS: Attention, this is a hack: AliGeomManager cannot accomodate all ITSU modules w/o
232 // conflicts with TPC. For this reason we define the UID of the module to be simply its ID
233 // int modUID = AliGeomManager::LayerToVolUID(lr+1,modNum++); // here modNum would be module within the layer
234 int modUID = AliITSUGeomTGeo::ModuleVolUID( modNum++ );
236 gGeoManager->SetAlignableEntry(AliITSUGeomTGeo::ComposeSymNameModule(lr,ld,md),pthM.Data(),modUID);
244 //______________________________________________________________________
245 void AliITSUv1::SetNWrapVolumes(Int_t n)
247 // book arrays for wrapper volumes
248 if (fNWrapVol) AliFatal(Form("%d wrapper volumes already defined",fNWrapVol));
251 fWrapRMin = new Double_t[fNWrapVol];
252 fWrapRMax = new Double_t[fNWrapVol];
253 fWrapZSpan= new Double_t[fNWrapVol];
254 for (int i=fNWrapVol;i--;) fWrapRMin[i]=fWrapRMax[i]=fWrapZSpan[i]=-1;
258 //______________________________________________________________________
259 void AliITSUv1::DefineWrapVolume(Int_t id, Double_t rmin,Double_t rmax, Double_t zspan)
261 // set parameters of id-th wrapper volume
262 if (id>=fNWrapVol||id<0) AliFatal(Form("id=%d of wrapper volume is not in 0-%d range",id,fNWrapVol-1));
263 fWrapRMin[id] = rmin;
264 fWrapRMax[id] = rmax;
265 fWrapZSpan[id] = zspan;
268 //______________________________________________________________________
269 void AliITSUv1::CreateGeometry() {
271 // Create the geometry and insert it in the mother volume ITSV
272 TGeoManager *geoManager = gGeoManager;
274 TGeoVolume *vALIC = geoManager->GetVolume("ALIC");
276 new TGeoVolumeAssembly(AliITSUGeomTGeo::GetITSVolPattern());
277 TGeoVolume *vITSV = geoManager->GetVolume(AliITSUGeomTGeo::GetITSVolPattern());
278 vITSV->SetUniqueID(AliITSUGeomTGeo::GetUIDShift()); // store modID -> midUUID bitshift
279 vALIC->AddNode(vITSV, 2, 0); // Copy number is 2 to cheat AliGeoManager::CheckSymNamesLUT
281 const Int_t kLength=100;
282 Char_t vstrng[kLength] = "xxxRS"; //?
283 vITSV->SetTitle(vstrng);
285 // Check that we have all needed parameters
286 if (fNLayers <= 0) AliFatal(Form("Wrong number of layers (%d)",fNLayers));
288 for (Int_t j=0; j<fNLayers; j++) {
289 if (fLayRadii[j] <= 0) AliFatal(Form("Wrong layer radius for layer %d (%f)",j,fLayRadii[j]));
290 if (fLayZLength[j] <= 0) AliFatal(Form("Wrong layer length for layer %d (%f)",j,fLayZLength[j]));
291 if (fLaddPerLay[j] <= 0) AliFatal(Form("Wrong number of ladders for layer %d (%d)",j,fLaddPerLay[j]));
292 if (fModPerLadd[j] <= 0) AliFatal(Form("Wrong number of modules for layer %d (%d)",j,fModPerLadd[j]));
293 if (fLadThick[j] < 0) AliFatal(Form("Wrong ladder thickness for layer %d (%f)",j,fLadThick[j]));
294 if (fLayTurbo[j] && fLadWidth[j] <= 0) AliFatal(Form("Wrong ladder width for layer %d (%f)",j,fLadWidth[j]));
295 if (fDetThick[j] < 0) AliFatal(Form("Wrong module thickness for layer %d (%f)",j,fDetThick[j]));
298 if (fLayRadii[j]<=fLayRadii[j-1]) AliFatal(Form("Layer %d radius (%f) is smaller than layer %d radius (%f)",
299 j,fLayRadii[j],j-1,fLayRadii[j-1]));
302 if (fLadThick[j] == 0) AliInfo(Form("Ladder thickness for layer %d not set, using default",j));
303 if (fDetThick[j] == 0) AliInfo(Form("Module thickness for layer %d not set, using default",j));
305 } // for (Int_t j=0; j<fNLayers; j++)
307 // Create the wrapper volumes
308 TGeoVolume **wrapVols = 0;
310 wrapVols = new TGeoVolume*[fNWrapVol];
311 for (int id=0;id<fNWrapVol;id++) {
312 wrapVols[id] = CreateWrapperVolume(id);
313 vITSV->AddNode(wrapVols[id], 1, 0);
317 // Now create the actual geometry
318 for (Int_t j=0; j<fNLayers; j++) {
319 TGeoVolume* dest = vITSV;
322 fUpGeom[j] = new AliITSUv1Layer(j,kTRUE,kFALSE);
323 fUpGeom[j]->SetLadderWidth(fLadWidth[j]);
324 fUpGeom[j]->SetLadderTilt(fLadTilt[j]);
326 else fUpGeom[j] = new AliITSUv1Layer(j,kFALSE);
328 fUpGeom[j]->SetPhi0(fLayPhi0[j]);
329 fUpGeom[j]->SetRadius(fLayRadii[j]);
330 fUpGeom[j]->SetZLength(fLayZLength[j]);
331 fUpGeom[j]->SetNLadders(fLaddPerLay[j]);
332 fUpGeom[j]->SetNModules(fModPerLadd[j]);
333 fUpGeom[j]->SetDetType(fDetTypeID[j]);
334 fUpGeom[j]->SetBuildLevel(fBuildLevel[j]);
336 fUpGeom[j]->SetStaveModel(fStaveModelIB);
338 fUpGeom[j]->SetStaveModel(fStaveModelOB);
339 AliDebug(1,Form("fBuildLevel: %d\n",fBuildLevel[j]));
341 if (fLadThick[j] != 0) fUpGeom[j]->SetLadderThick(fLadThick[j]);
342 if (fDetThick[j] != 0) fUpGeom[j]->SetSensorThick(fDetThick[j]);
344 for (int iw=0;iw<fNWrapVol;iw++) {
345 if (fLayRadii[j]>fWrapRMin[iw] && fLayRadii[j]<fWrapRMax[iw]) {
346 AliInfo(Form("Will embed layer %d in wrapper volume %d",j,iw));
347 if (fLayZLength[j]>=fWrapZSpan[iw]) AliFatal(Form("ZSpan %.3f of wrapper volume %d is less than ZSpan %.3f of layer %d",
348 fWrapZSpan[iw],iw,fLayZLength[j],j));
353 fUpGeom[j]->CreateLayer(dest);
355 delete wrapVols; // delete pointer only, not the volumes
359 //______________________________________________________________________
360 void AliITSUv1::CreateMaterials() {
361 // Create ITS materials
362 // This function defines the default materials used in the Geant
363 // Monte Carlo simulations for the geometries AliITSv1, AliITSv3,
365 // In general it is automatically replaced by
366 // the CreateMaterials routine defined in AliITSv?. Should the function
367 // CreateMaterials not exist for the geometry version you are using this
368 // one is used. See the definition found in AliITSv5 or the other routine
369 // for a complete definition.
377 Int_t ifield = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
378 Float_t fieldm = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
380 Float_t tmaxfd = 0.1; // 1.0; // Degree
381 Float_t stemax = 1.0; // cm
382 Float_t deemax = 0.1; // 30.0; // Fraction of particle's energy 0<deemax<=1
383 Float_t epsil = 1.0E-4; // 1.0; // cm
384 Float_t stmin = 0.0; // cm "Default value used"
386 Float_t tmaxfdSi = 0.1; // .10000E+01; // Degree
387 Float_t stemaxSi = 0.0075; // .10000E+01; // cm
388 Float_t deemaxSi = 0.1; // 0.30000E-02; // Fraction of particle's energy 0<deemax<=1
389 Float_t epsilSi = 1.0E-4;// .10000E+01;
390 Float_t stminSi = 0.0; // cm "Default value used"
392 Float_t tmaxfdAir = 0.1; // .10000E+01; // Degree
393 Float_t stemaxAir = .10000E+01; // cm
394 Float_t deemaxAir = 0.1; // 0.30000E-02; // Fraction of particle's energy 0<deemax<=1
395 Float_t epsilAir = 1.0E-4;// .10000E+01;
396 Float_t stminAir = 0.0; // cm "Default value used"
399 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
400 Float_t zAir[4]={6.,7.,8.,18.};
401 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
402 Float_t dAir = 1.20479E-3;
405 Float_t aWater[2]={1.00794,15.9994};
406 Float_t zWater[2]={1.,8.};
407 Float_t wWater[2]={0.111894,0.888106};
408 Float_t dWater = 1.0;
412 Float_t aKapton[4]={1.00794,12.0107, 14.010,15.9994};
413 Float_t zKapton[4]={1.,6.,7.,8.};
414 Float_t wKapton[4]={0.026362,0.69113,0.07327,0.209235};
415 Float_t dKapton = 1.42;
417 AliMixture(1,"AIR$",aAir,zAir,dAir,4,wAir);
418 AliMedium(1, "AIR$",1,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);
420 AliMixture(2,"WATER$",aWater,zWater,dWater,2,wWater);
421 AliMedium(2, "WATER$",2,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
423 AliMaterial(3,"SI$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
424 AliMedium(3, "SI$",3,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
426 AliMaterial(4,"BERILLIUM$",9.01, 4., 1.848, 35.3, 36.7);// From AliPIPEv3
427 AliMedium(4, "BERILLIUM$",4,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
429 AliMaterial(5,"COPPER$",0.63546E+02,0.29000E+02,0.89600E+01,0.14300E+01,0.99900E+03);
430 AliMedium(5, "COPPER$",5,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
433 // needed for STAVE , Carbon, kapton, Epoxy, flexcable
435 //AliMaterial(6,"CARBON$",12.0107,6,2.210,999,999);
436 AliMaterial(6,"CARBON$",12.0107,6,2.210/1.3,999,999);
437 AliMedium(6, "CARBON$",6,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
439 AliMixture(7,"KAPTON(POLYCH2)$", aKapton, zKapton, dKapton, 4, wKapton);
440 AliMedium(7, "KAPTON(POLYCH2)$",7,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
444 // values below modified as compared to source AliITSv11 !
446 //AliMaterial(7,"GLUE$",0.12011E+02,0.60000E+01,0.1930E+01/2.015,999,999); // original
447 AliMaterial(15,"GLUE$",12.011,6,1.93/2.015,999,999); // conform with ATLAS, Corrado, Stefan
448 AliMedium(15, "GLUE$",15,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
450 // All types of carbon
451 // Unidirectional prepreg
452 AliMaterial(8,"K13D2U2k$",12.0107,6,1.643,999,999);
453 AliMedium(8, "K13D2U2k$",8,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
455 AliMaterial(9,"M60J3K$",12.0107,6,2.21,999,999);
456 AliMedium(9, "M60J3K$",9,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
458 AliMaterial(10,"M55J6K$",12.0107,6,1.63,999,999);
459 AliMedium(10, "M55J6K$",10,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
461 AliMaterial(11,"T300$",12.0107,6,1.725,999,999);
462 AliMedium(11, "T300$",11,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
464 AliMaterial(12,"FGS003$",12.0107,6,1.6,999,999);
465 AliMedium(12, "FGS003$",12,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
467 AliMaterial(13,"CarbonFleece$",12.0107,6,0.4,999,999);
468 AliMedium(13, "CarbonFleece$",13,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
471 Float_t aFCm[5]={12.0107,1.00794,14.0067,15.9994,26.981538};
472 Float_t zFCm[5]={6.,1.,7.,8.,13.};
473 Float_t wFCm[5]={0.520088819984,0.01983871336,0.0551367996,0.157399667056, 0.247536};
474 //Float_t dFCm = 1.6087; // original
475 //Float_t dFCm = 2.55; // conform with STAR
476 Float_t dFCm = 2.595; // conform with Corrado
478 AliMixture(14,"FLEXCABLE$",aFCm,zFCm,dFCm,5,wFCm);
479 AliMedium(14, "FLEXCABLE$",14,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
481 AliMaterial(16,"ALUMINUM$",0.26982E+02,0.13000E+02,0.26989E+01,0.89000E+01,0.99900E+03);
482 AliMedium(16,"ALUMINUM$",16,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
486 //______________________________________________________________________
487 void AliITSUv1::DefineLayer(const Int_t nlay, const double phi0, const Double_t r,
488 const Double_t zlen, const Int_t nladd,
489 const Int_t nmod, const Double_t lthick,
490 const Double_t dthick, const UInt_t dettypeID,
491 const Int_t buildLevel)
493 // Sets the layer parameters
499 // nladd number of ladders
500 // nmod number of modules per ladder
501 // lthick ladder thickness (if omitted, defaults to 0)
502 // dthick detector thickness (if omitted, defaults to 0)
503 // buildLevel (if 0, all geometry is build, used for material budget studies)
509 if (nlay >= fNLayers || nlay < 0) {
510 AliError(Form("Wrong layer number (%d)",nlay));
514 fLayTurbo[nlay] = kFALSE;
515 fLayPhi0[nlay] = phi0;
517 fLayZLength[nlay] = zlen;
518 fLaddPerLay[nlay] = nladd;
519 fModPerLadd[nlay] = nmod;
520 fLadThick[nlay] = lthick;
521 fDetThick[nlay] = dthick;
522 fDetTypeID[nlay] = dettypeID;
523 fBuildLevel[nlay] = buildLevel;
527 //______________________________________________________________________
528 void AliITSUv1::DefineLayerTurbo(Int_t nlay, Double_t phi0, Double_t r, Double_t zlen, Int_t nladd,
529 Int_t nmod, Double_t width, Double_t tilt,
530 Double_t lthick,Double_t dthick,
531 UInt_t dettypeID, Int_t buildLevel)
533 // Sets the layer parameters for a "turbo" layer
534 // (i.e. a layer whose ladders overlap in phi)
537 // phi0 phi of 1st ladder
540 // nladd number of ladders
541 // nmod number of modules per ladder
542 // width ladder width
543 // tilt layer tilt angle (degrees)
544 // lthick ladder thickness (if omitted, defaults to 0)
545 // dthick detector thickness (if omitted, defaults to 0)
547 // buildLevel (if 0, all geometry is build, used for material budget studies)
553 if (nlay >= fNLayers || nlay < 0) {
554 AliError(Form("Wrong layer number (%d)",nlay));
558 fLayTurbo[nlay] = kTRUE;
559 fLayPhi0[nlay] = phi0;
561 fLayZLength[nlay] = zlen;
562 fLaddPerLay[nlay] = nladd;
563 fModPerLadd[nlay] = nmod;
564 fLadThick[nlay] = lthick;
565 fLadWidth[nlay] = width;
566 fLadTilt[nlay] = tilt;
567 fDetThick[nlay] = dthick;
568 fDetTypeID[nlay] = dettypeID;
569 fBuildLevel[nlay] = buildLevel;
573 //______________________________________________________________________
574 void AliITSUv1::GetLayerParameters(Int_t nlay, Double_t &phi0,
575 Double_t &r, Double_t &zlen,
576 Int_t &nladd, Int_t &nmod,
577 Double_t &width, Double_t &tilt,
578 Double_t <hick, Double_t &dthick,
579 UInt_t &dettype) const
581 // Gets the layer parameters
585 // phi0 phi of 1st ladder
588 // nladd number of ladders
589 // nmod number of modules per ladder
590 // width ladder width
591 // tilt ladder tilt angle
592 // lthick ladder thickness
593 // dthick detector thickness
594 // dettype detector type
598 if (nlay >= fNLayers || nlay < 0) {
599 AliError(Form("Wrong layer number (%d)",nlay));
603 phi0 = fLayPhi0[nlay];
605 zlen = fLayZLength[nlay];
606 nladd = fLaddPerLay[nlay];
607 nmod = fModPerLadd[nlay];
608 width = fLadWidth[nlay];
609 tilt = fLadTilt[nlay];
610 lthick = fLadThick[nlay];
611 dthick = fDetThick[nlay];
612 dettype= fDetTypeID[nlay];
615 //______________________________________________________________________
616 TGeoVolume* AliITSUv1::CreateWrapperVolume(Int_t id)
618 // Creates an air-filled wrapper cylindrical volume
622 // the wrapper volume
624 if (fWrapRMin[id]<0 || fWrapRMax[id]<0 || fWrapZSpan[id]<0) AliFatal(Form("Wrapper volume %d was requested but not defined",id));
625 // Now create the actual shape and volume
627 TGeoTube *tube = new TGeoTube(fWrapRMin[id], fWrapRMax[id], fWrapZSpan[id]/2.);
629 TGeoMedium *medAir = gGeoManager->GetMedium("ITS_AIR$");
632 snprintf(volnam, 29, "%s%d", AliITSUGeomTGeo::GetITSWrapVolPattern(),id);
634 TGeoVolume *wrapper = new TGeoVolume(volnam, tube, medAir);
639 //______________________________________________________________________
640 void AliITSUv1::Init()
642 // Initialise the ITS after it has been created.
643 UpdateInternalGeometry();
648 //______________________________________________________________________
649 Bool_t AliITSUv1::IsLayerTurbo(Int_t nlay)
651 // Returns true if the layer is a "turbo" layer
652 if ( nlay < 0 || nlay > fNLayers ) {
653 AliError(Form("Wrong layer number %d",nlay));
656 else return fUpGeom[nlay]->IsTurbo();
659 //______________________________________________________________________
660 void AliITSUv1::SetDefaults()
662 // sets the default segmentation, response, digit and raw cluster classes
665 //______________________________________________________________________
666 void AliITSUv1::StepManager()
668 // Called for every step in the ITS, then calles the AliITSUHit class
669 // creator with the information to be recoreded about that hit.
670 // The value of the macro ALIITSPRINTGEOM if set to 1 will allow the
671 // printing of information to a file which can be used to create a .det
672 // file read in by the routine CreateGeometry(). If set to 0 or any other
673 // value except 1, the default behavior, then no such file is created nor
674 // it the extra variables and the like used in the printing allocated.
681 if(!(this->IsActive())) return;
682 if(!(gMC->TrackCharge())) return;
685 Int_t id = gMC->CurrentVolID(copy);
687 Bool_t notSens = kFALSE;
688 while ((lay<fNLayers) && (notSens = (id!=fIdSens[lay]))) ++lay;
689 //printf("R: %.1f | Lay: %d NotSens: %d\n",positionRS.Pt(), lay, notSens);
693 if(gMC->IsTrackExiting()) {
694 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kITS);
695 } // if Outer ITS mother Volume
697 static TLorentzVector position, momentum; // Saves on calls to construtors
698 static AliITSUHit hit;// Saves on calls to constructors
700 TClonesArray &lhits = *(Hits());
701 Int_t cpn0, cpn1, mod, status = 0;
704 if(gMC->IsTrackInside()) status += 1;
705 if(gMC->IsTrackEntering()) status += 2;
706 if(gMC->IsTrackExiting()) status += 4;
707 if(gMC->IsTrackOut()) status += 8;
708 if(gMC->IsTrackDisappeared()) status += 16;
709 if(gMC->IsTrackStop()) status += 32;
710 if(gMC->IsTrackAlive()) status += 64;
713 // retrieve the indices with the volume path
715 if (lay < 0 || lay >= fNLayers) {
716 AliError(Form("Invalid value: lay=%d. Not an ITS sensitive volume",lay));
717 return; // not an ITS sensitive volume.
720 gMC->CurrentVolOffID(1,cpn1);
721 gMC->CurrentVolOffID(2,cpn0);
724 mod = fGeomTGeo->GetModuleIndex(lay,cpn0,cpn1);
725 //RS2DEL fInitGeom.DecodeDetector(mod,lay+1,cpn0,cpn1,copy);
727 // Fill hit structure.
730 hit.SetTrack(gAlice->GetMCApp()->GetCurrentTrackNumber());
731 gMC->TrackPosition(position);
732 gMC->TrackMomentum(momentum);
733 hit.SetPosition(position);
734 hit.SetTime(gMC->TrackTime());
735 hit.SetMomentum(momentum);
736 hit.SetStatus(status);
737 hit.SetEdep(gMC->Edep());
738 hit.SetShunt(GetIshunt());
739 if(gMC->IsTrackEntering()){
740 hit.SetStartPosition(position);
741 hit.SetStartTime(gMC->TrackTime());
742 hit.SetStartStatus(status);
743 return; // don't save entering hit.
744 } // end if IsEntering
745 // Fill hit structure with this new hit.
746 //Info("StepManager","Calling Copy Constructor");
747 new(lhits[fNhits++]) AliITSUHit(hit); // Use Copy Construtor.
748 // Save old position... for next hit.
749 hit.SetStartPosition(position);
750 hit.SetStartTime(gMC->TrackTime());
751 hit.SetStartStatus(status);
756 //______________________________________________________________________
757 void AliITSUv1::SetLayerDetTypeID(Int_t lr, UInt_t id)
760 if (!fDetTypeID || fNLayers<=lr) AliFatal(Form("Number of layers %d, %d is manipulated",fNLayers,lr));
764 //______________________________________________________________________
765 Int_t AliITSUv1::GetLayerDetTypeID(Int_t lr)
768 if (!fDetTypeID || fNLayers<=lr) AliFatal(Form("Number of layers %d, %d is manipulated",fNLayers,lr));
769 return fDetTypeID[lr];