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 **************************************************************************/
20 #include <Riostream.h>
21 #include <TObjArray.h>
24 #include "AliITSmodule.h"
25 #include "AliITSMapA2.h"
26 #include "AliITSpList.h"
27 #include "AliITSCalibrationSSD.h"
28 #include "AliITSsegmentationSSD.h"
29 //#include "AliITSdcsSSD.h"
31 #include "AliITShit.h"
32 #include "AliITSdigitSSD.h"
34 #include "AliITSgeom.h"
35 #include "AliITSsimulationSSD.h"
36 #include "AliITSTableSSD.h"
40 ClassImp(AliITSsimulationSSD)
41 ////////////////////////////////////////////////////////////////////////
43 // Author: Enrico Fragiacomo //
44 // enrico.fragiacomo@ts.infn.it //
45 // Last revised: june 2008 //
47 // AliITSsimulationSSD is the simulation of SSD. //
48 ////////////////////////////////////////////////////////////////////////
50 //----------------------------------------------------------------------
51 AliITSsimulationSSD::AliITSsimulationSSD():AliITSsimulation(),
63 // A default construction AliITSsimulationSSD class
65 //----------------------------------------------------------------------
66 AliITSsimulationSSD::AliITSsimulationSSD(AliITSDetTypeSim* dettyp):
67 AliITSsimulation(dettyp),
76 // AliITSDetTypeSim Pointer to the SSD dettype to be used
80 // A standard constructed AliITSsimulationSSD class
82 fTimeResponse = new TF1("ftimeresponse",".5*x*exp(1.-.5*x)");
85 //----------------------------------------------------------------------
86 void AliITSsimulationSSD::Init(){
87 // Inilizer, Inilizes all of the variable as needed in a standard place.
89 // AliITSsegmentationSSD *seg Pointer to the SSD segmentation to be used
90 // AliITSCalibrationSSD *resp Pointer to the SSD responce class to be used
95 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
97 SetDriftVelocity(); // use default values in .h file
98 SetIonizeE(); // use default values in .h file
99 SetDiffConst(); // use default values in .h file
100 fpList = new AliITSpList(2,GetNStrips());
101 fMapA2 = new AliITSMapA2(seg);
103 //______________________________________________________________________
104 AliITSsimulationSSD& AliITSsimulationSSD::operator=(
105 const AliITSsimulationSSD &s){
108 if(this==&s) return *this;
110 // this->fDCS = new AliITSdcsSSD(*(s.fDCS));
111 this->fMapA2 = s.fMapA2;
112 this->fIonE = s.fIonE;
113 this->fDifConst[0] = s.fDifConst[0];
114 this->fDifConst[1] = s.fDifConst[1];
115 this->fDriftVel[0] = s.fDriftVel[0];
116 this->fDriftVel[1] = s.fDriftVel[1];
117 this->fTimeResponse = s.fTimeResponse;
121 //______________________________________________________________________
122 AliITSsimulation& AliITSsimulationSSD::operator=(
123 const AliITSsimulation &s){
126 if(this==&s) return *this;
127 Error("AliITSsimulationSSD","Not allowed to make a = with "
128 "AliITSsimulationSSD Using default creater instead");
133 //______________________________________________________________________
134 AliITSsimulationSSD::AliITSsimulationSSD(const AliITSsimulationSSD &source):
135 AliITSsimulation(source),
136 fMapA2(source.fMapA2),
140 fTimeResponse(source.fTimeResponse){
142 fDifConst[0] = source.fDifConst[0];
143 fDifConst[1] = source.fDifConst[1];
144 fDriftVel[0] = source.fDriftVel[0];
145 fDriftVel[1] = source.fDriftVel[1];
147 //______________________________________________________________________
148 AliITSsimulationSSD::~AliITSsimulationSSD() {
151 delete fTimeResponse;
154 //______________________________________________________________________
155 void AliITSsimulationSSD::InitSimulationModule(Int_t module,Int_t event){
156 // Creates maps to build the list of tracks for each sumable digit
158 // Int_t module // Module number to be simulated
159 // Int_t event // Event number to be simulated
165 SetModuleNumber(module);
166 SetEventNumber(event);
170 //______________________________________________________________________
171 void AliITSsimulationSSD::FinishSDigitiseModule(){
172 // Does the Sdigits to Digits work
180 FillMapFrompList(fpList); // need to check if needed here or not????
181 SDigitToDigit(fModule,fpList);
185 //______________________________________________________________________
186 void AliITSsimulationSSD::DigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
187 // Digitizes hits for one SSD module
188 SetModuleNumber(mod->GetIndex());
190 HitsToAnalogDigits(mod,fpList);
191 SDigitToDigit(GetModuleNumber(),fpList);
196 //______________________________________________________________________
197 void AliITSsimulationSSD::SDigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
198 // Produces Summable/Analog digits and writes them to the SDigit tree.
200 HitsToAnalogDigits(mod,fpList);
202 WriteSDigits(fpList);
207 //______________________________________________________________________
208 void AliITSsimulationSSD::SDigitToDigit(Int_t module,AliITSpList *pList){
209 // Takes the pList and finishes the digitization.
211 ApplyNoise(pList,module);
212 ApplyCoupling(pList,module);
213 ApplyDeadChannels(module);
215 ChargeToSignal(module,pList);
217 //______________________________________________________________________
218 void AliITSsimulationSSD::HitsToAnalogDigits(AliITSmodule *mod,
220 // Loops over all hits to produce Analog/floating point digits. This
221 // is also the first task in producing standard digits.
222 Int_t lasttrack = -2;
224 Double_t x0=0.0, y0=0.0, z0=0.0;
225 Double_t x1=0.0, y1=0.0, z1=0.0;
227 Int_t module = mod->GetIndex();
231 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
233 TObjArray *hits = mod->GetHits();
234 Int_t nhits = hits->GetEntriesFast();
235 if (nhits<=0) return;
236 AliITSTableSSD * tav = new AliITSTableSSD(GetNStrips());
237 module = mod->GetIndex();
238 if ( mod->GetLayer() == 6 ) seg->SetLayer(6);
239 if ( mod->GetLayer() == 5 ) seg->SetLayer(5);
240 for(Int_t i=0; i<nhits; i++) {
241 // LineSegmentL returns 0 if the hit is entering
242 // If hits is exiting returns positions of entering and exiting hits
243 // Returns also energy loss
246 cout << mod->GetHit(i)->GetXL() << " "<<mod->GetHit(i)->GetYL();
247 cout << " " << mod->GetHit(i)->GetZL();
250 if (mod->LineSegmentL(i, x0, x1, y0, y1, z0, z1, de, idtrack)) {
252 // Scale down dE/dx according to the hit's TOF wrt to the trigger
253 // Necessary for pileup simulation
255 tof = mod->GetHit(i)->GetTOF();
256 tof *= 1.E+6; // convert time in microsecond
257 de = de * fTimeResponse->Eval(-1.*tof+2.);
260 HitToDigit(module, x0, y0, z0, x1, y1, z1, de,tav);
261 if (lasttrack != idtrack || i==(nhits-1)) {
262 GetList(idtrack,i,module,pList,tav);
266 } // end loop over hits
270 //----------------------------------------------------------------------
271 void AliITSsimulationSSD::HitToDigit(Int_t module, Double_t x0, Double_t y0,
272 Double_t z0, Double_t x1, Double_t y1,
273 Double_t z1, Double_t de,
274 AliITSTableSSD *tav) {
276 // hit to digit conversion
278 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
279 // Turns hits in SSD module into one or more digits.
280 //Float_t tang[2] = {0.0,0.0};
281 //seg->Angles(tang[0], tang[1]);//stereo<<->tan(stereo)~=stereo
283 Double_t dex=0.0, dey=0.0, dez=0.0;
284 Double_t pairs; // pair generation energy per step.
285 Double_t sigma[2] = {0.,0.};// standard deviation of the diffusion gaussian
286 Double_t tdrift[2] = {0.,0.}; // time of drift
288 Double_t inf[2], sup[2], par0[2];
290 // Steps in the module are determined "manually" (i.e. No Geant)
291 // NumOfSteps divide path between entering and exiting hits in steps
292 Int_t numOfSteps = NumOfSteps(x1, y1, z1, dex, dey, dez);
293 // Enery loss is equally distributed among steps
295 pairs = de/GetIonizeE(); // e-h pairs generated
297 //-----------------------------------------------------
299 //-----------------------------------------------------
300 for(Int_t j=0; j<numOfSteps; j++) { // stepping
302 x = x0 + (j+0.5)*dex;
303 y = y0 + (j+0.5)*dey;
304 if ( y > (seg->Dy()/2+10)*1.0E-4 ) {
305 // check if particle is within the detector
306 Warning("HitToDigit",
307 "hit out of detector y0=%e,y=%e,dey=%e,j =%d module=%d, exceed=%e",
308 y0,y,dey,j,module, y-(seg->Dy()/2+10)*1.0E-4);
311 z = z0 + (j+0.5)*dez;
313 if(GetDebug(4)) cout <<"HitToDigit "<<x<<" "<<y<<" "<<z<< " "
314 <<dex<<" "<<dey<<" "<<dez<<endl;
316 if(seg->GetLayer()==6) {
317 y=-y; // Lay6 module has sensor up-side-down!!!
320 // w is the coord. perpendicular to the strips
321 // Float_t xp=x*1.e+4,zp=z*1.e+4; // microns
323 seg->GetPadTxz(xp,zp);
326 //---------------------------------------------------------
328 //------------------------------------------------------------
331 // calculate drift time
332 // y is the minimum path
333 tdrift[0] = (y+(seg->Dy()*1.0E-4)/2)/GetDriftVelocity(0);
335 w = xp; // P side strip number
337 if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
338 // this check rejects hits in regions not covered by strips
339 // 0.5 takes into account boundaries
340 if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
341 return; // There are dead region on the SSD sensitive volume!!!
344 // sigma is the standard deviation of the diffusion gaussian
345 if(tdrift[k]<0) return;
347 sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
348 sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
351 Error("HitToDigit"," sigma[%d]=0",k);
356 // we integrate the diffusion gaussian from -3sigma to 3sigma
357 inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
358 sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
359 // IntegrateGaussian does the actual
360 // integration of diffusion gaussian
361 IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
363 //------------------------------------------------------
365 //-------------------------------------------------------
367 //------------------------------------------------------
369 //-------------------------------------------------------
371 tdrift[1] = ((seg->Dy()*1.0E-4)/2-y)/GetDriftVelocity(1);
373 //tang[k]=TMath::Tan(tang[k]);
375 w = zp; // N side strip number
377 if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
378 // this check rejects hits in regions not covered by strips
379 // 0.5 takes into account boundaries
380 if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
381 return; // There are dead region on the SSD sensitive volume.
384 // sigma is the standard deviation of the diffusion gaussian
385 if(tdrift[k]<0) return;
387 sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
388 sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
391 Error("HitToDigit"," sigma[%d]=0",k);
396 // we integrate the diffusion gaussian from -3sigma to 3sigma
397 inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
398 sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
399 // IntegrateGaussian does the actual
400 // integration of diffusion gaussian
401 IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
403 //-------------------------------------------------
405 //-------------------------------------------------
411 //______________________________________________________________________
412 void AliITSsimulationSSD::ApplyNoise(AliITSpList *pList,Int_t module){
415 Double_t signal,noise;
416 AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
419 for(ix=0;ix<GetNStrips();ix++){ // loop over strips
422 noise = (Double_t) gRandom->Gaus(0,res->GetNoiseP(ix));
424 // need to calibrate noise
425 // NOTE. noise from the calibration database comes uncalibrated,
426 // it needs to be calibrated in order to be added
427 // to the signal. It will be decalibrated later on together with the noise
428 noise *= (Double_t) res->GetGainP(ix);
430 // noise comes in ADC channels from the calibration database
431 // It needs to be converted back to electronVolts
432 noise /= res->GetSSDDEvToADC(1.);
434 // Finally, noise is added to the signal
435 signal = noise + fMapA2->GetSignal(0,ix);//get signal from map
436 fMapA2->SetHit(0,ix,signal); // give back signal to map
437 if(signal>0.0) pList->AddNoise(0,ix,module,noise);
441 for(ix=0;ix<GetNStrips();ix++){ // loop over strips
442 noise = (Double_t) gRandom->Gaus(0,res->GetNoiseN(ix));// give noise to signal
443 noise *= (Double_t) res->GetGainN(ix);
444 noise /= res->GetSSDDEvToADC(1.);
445 signal = noise + fMapA2->GetSignal(1,ix);//get signal from map
446 fMapA2->SetHit(1,ix,signal); // give back signal to map
447 if(signal>0.0) pList->AddNoise(1,ix,module,noise);
451 //______________________________________________________________________
452 void AliITSsimulationSSD::ApplyCoupling(AliITSpList *pList,Int_t module) {
453 // Apply the effect of electronic coupling between channels
456 //AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
457 AliITSSimuParam* res = fDetType->GetSimuParam();
459 Double_t *contrLeft = new Double_t[GetNStrips()];
460 Double_t *contrRight = new Double_t[GetNStrips()];
463 for(ix=0;ix<GetNStrips();ix++){
464 if(ix>0) contrLeft[ix] = fMapA2->GetSignal(0,ix-1)*res->GetSSDCouplingPL();
465 else contrLeft[ix] = 0.0;
466 if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(0,ix+1)*res->GetSSDCouplingPR();
467 else contrRight[ix] = 0.0;
468 } // loop over strips
470 for(ix=0;ix<GetNStrips();ix++){
471 signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingPL() * fMapA2->GetSignal(0,ix)
472 - res->GetSSDCouplingPR() * fMapA2->GetSignal(0,ix);
473 fMapA2->AddSignal(0,ix,signal);
474 if(signal>0.0) pList->AddNoise(0,ix,module,signal);
475 } // loop over strips
478 for(ix=0;ix<GetNStrips();ix++){
479 if(ix>0) contrLeft[ix] = fMapA2->GetSignal(1,ix-1)*res->GetSSDCouplingNL();
480 else contrLeft[ix] = 0.0;
481 if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(1,ix+1)*res->GetSSDCouplingNR();
482 else contrRight[ix] = 0.0;
483 } // loop over strips
485 for(ix=0;ix<GetNStrips();ix++){
486 signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingNL() * fMapA2->GetSignal(0,ix)
487 - res->GetSSDCouplingNR() * fMapA2->GetSignal(0,ix);
488 fMapA2->AddSignal(1,ix,signal);
489 if(signal>0.0) pList->AddNoise(1,ix,module,signal);
490 } // loop over strips
494 delete [] contrRight;
497 //______________________________________________________________________
498 void AliITSsimulationSSD::ApplyDeadChannels(Int_t module) {
499 // Kill dead channels setting gain to zero
501 AliITSCalibrationSSD* res = (AliITSCalibrationSSD*)GetCalibrationModel(module);
503 for(Int_t i=0;i<GetNStrips();i++){
505 if(res->IsPChannelBad(i)) res->SetGainP(i,0.0);
506 if(res->IsNChannelBad(i)) res->SetGainN(i,0.0);
508 } // loop over strips
512 //______________________________________________________________________
513 Float_t AliITSsimulationSSD::F(Float_t av, Float_t x, Float_t s) {
514 // Computes the integral of a gaussian using Error Function
515 Float_t sqrt2 = TMath::Sqrt(2.0);
516 Float_t sigm2 = sqrt2*s;
519 integral = 0.5 * TMath::Erf( (x - av) / sigm2);
522 //______________________________________________________________________
523 void AliITSsimulationSSD::IntegrateGaussian(Int_t k,Double_t par, Double_t w,
525 Double_t inf, Double_t sup,
526 AliITSTableSSD *tav) {
527 // integrate the diffusion gaussian
528 // remind: inf and sup are w-3sigma and w+3sigma
529 // we could define them here instead of passing them
530 // this way we are free to introduce asimmetry
532 Double_t a=0.0, b=0.0;
533 Double_t dXCharge1 = 0.0, dXCharge2 = 0.0;
534 // dXCharge1 and 2 are the charge to two neighbouring strips
535 // Watch that we only involve at least two strips
536 // Numbers greater than 2 of strips in a cluster depend on
537 // geometry of the track and delta rays, not charge diffusion!
539 Double_t strip = TMath::Floor(w); // closest strip on the left
541 if ( TMath::Abs((strip - w)) < 0.5) {
542 // gaussian mean is closer to strip on the left
543 a = inf; // integration starting point
544 if((strip+0.5)<=sup) {
545 // this means that the tail of the gaussian goes beyond
546 // the middle point between strips ---> part of the signal
547 // is given to the strip on the right
548 b = strip + 0.5; // integration stopping point
549 dXCharge1 = F( w, b, sigma) - F(w, a, sigma);
550 dXCharge2 = F( w, sup, sigma) - F(w ,b, sigma);
552 // this means that all the charge is given to the strip on the left
554 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
557 dXCharge1 = par * dXCharge1;// normalize by mean of number of carriers
558 dXCharge2 = par * dXCharge2;
560 // for the time being, signal is the charge
561 // in ChargeToSignal signal is converted in ADC channel
562 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
563 tav->Add(k,(Int_t)strip);
564 if(((Int_t) strip) < (GetNStrips()-1)) {
565 // strip doesn't have to be the last (remind: last=GetNStrips()-1)
566 // otherwise part of the charge is lost
567 fMapA2->AddSignal(k,((Int_t)strip+1),dXCharge2);
568 tav->Add(k,((Int_t)(strip+1)));
571 // gaussian mean is closer to strip on the right
572 strip++; // move to strip on the rigth
573 b = sup; // now you know where to stop integrating
574 if((strip-0.5)>=inf) {
575 // tail of diffusion gaussian on the left goes left of
576 // middle point between strips
577 a = strip - 0.5; // integration starting point
578 dXCharge1 = F(w, b, sigma) - F(w, a, sigma);
579 dXCharge2 = F(w, a, sigma) - F(w, inf, sigma);
582 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
585 dXCharge1 = par * dXCharge1; // normalize by means of carriers
586 dXCharge2 = par * dXCharge2;
587 // for the time being, signal is the charge
588 // in ChargeToSignal signal is converted in ADC channel
589 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
590 tav->Add(k,(Int_t)strip);
591 if(((Int_t) strip) > 0) {
592 // strip doesn't have to be the first
593 // otherwise part of the charge is lost
594 fMapA2->AddSignal(k,((Int_t)strip-1),dXCharge2);
595 tav->Add(k,((Int_t)(strip-1)));
599 //______________________________________________________________________
600 Int_t AliITSsimulationSSD::NumOfSteps(Double_t x, Double_t y, Double_t z,
601 Double_t &dex,Double_t &dey,
604 // it also returns steps for each coord
605 //AliITSsegmentationSSD *seg = new AliITSsegmentationSSD();
607 Double_t step = 25E-4;
608 //step = (Double_t) seg->GetStepSize(); // step size (cm)
609 Int_t numOfSteps = (Int_t) (TMath::Sqrt(x*x+y*y+z*z)/step);
611 if (numOfSteps < 1) numOfSteps = 1; // one step, at least
614 // we could condition the stepping depending on the incident angle
622 //----------------------------------------------------------------------
623 void AliITSsimulationSSD::GetList(Int_t label,Int_t hit,Int_t mod,
624 AliITSpList *pList,AliITSTableSSD *tav) {
625 // loop over nonzero digits
629 for(Int_t k=0; k<2; k++) {
632 signal = fMapA2->GetSignal(k,ix);
636 } // end if signal==0.0
637 // check the signal magnitude
638 for(i=0;i<pList->GetNSignals(k,ix);i++){
639 signal -= pList->GetTSignal(k,ix,i);
641 // compare the new signal with already existing list
642 if(signal>0)pList->AddSignal(k,ix,label,hit,mod,signal);
644 } // end of loop on strips
645 } // end of loop on P/N side
648 //----------------------------------------------------------------------
649 void AliITSsimulationSSD::ChargeToSignal(Int_t module,AliITSpList *pList) {
651 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
652 Float_t threshold = 0.;
653 Int_t size = AliITSdigitSSD::GetNTracks();
654 Int_t * digits = new Int_t[size];
655 Int_t * tracks = new Int_t[size];
656 Int_t * hits = new Int_t[size];
658 Float_t charges[3] = {0.0,0.0,0.0};
660 AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
661 AliITSSimuParam* simpar = fDetType->GetSimuParam();
663 for(Int_t k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
664 for(Int_t ix=0;ix<GetNStrips();ix++){ // loop over strips
666 // if strip is dead -> gain=0
667 if( ((k==0)&&(res->GetGainP(ix)==0)) || ((k==1)&&(res->GetGainN(ix)==0))) continue;
669 signal = fMapA2->GetSignal(k,ix);
670 // signal has to be uncalibrated
671 // In real life, gains are supposed to be calculated from calibration runs,
672 // stored in the calibration DB and used in the reconstruction
673 // (see AliITSClusterFinderSSD.cxx)
674 if(k==0) signal /= res->GetGainP(ix);
675 else signal /= res->GetGainN(ix);
677 // signal is converted in unit of ADC
678 signal = res->GetSSDDEvToADC(signal);
679 if(signal>4096.) signal = 4096.;//if exceeding, accumulate last one
681 // threshold for zero suppression is set on the basis of the noise
682 // A good value is 3*sigma_noise
683 if(k==0) threshold = res->GetNoiseP(ix);
684 else threshold = res->GetNoiseN(ix);
686 threshold *= simpar->GetSSDZSThreshold(); // threshold at 3 sigma noise
688 if(signal < threshold) continue;
689 //cout<<signal<<" "<<threshold<<endl;
693 digits[2] = TMath::Nint(signal);
694 for(j1=0;j1<size;j1++)if(j1<pList->GetNEntries()){
695 // only three in digit.
696 tracks[j1] = pList->GetTrack(k,ix,j1);
697 hits[j1] = pList->GetHit(k,ix,j1);
703 aliITS->AddSimDigit(2,0,digits,tracks,hits,charges);
710 //______________________________________________________________________
711 void AliITSsimulationSSD::WriteSDigits(AliITSpList *pList){
712 // Fills the Summable digits Tree
714 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
716 pList->GetMaxMapIndex(ni,nj);
717 for(i=0;i<ni;i++)for(j=0;j<nj;j++){
718 if(pList->GetSignalOnly(i,j)>0.0){
719 aliITS->AddSumDigit(*(pList->GetpListItem(i,j)));
720 if(GetDebug(4)) cout << "pListSSD: "<<*(pList->GetpListItem(i,j))
726 //______________________________________________________________________
727 void AliITSsimulationSSD::FillMapFrompList(AliITSpList *pList){
728 // Fills fMap2A from the pList of Summable digits
731 for(k=0;k<2;k++)for(ix=0;ix<GetNStrips();ix++)
732 fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix));
735 //______________________________________________________________________
736 void AliITSsimulationSSD::Print(ostream *os){
737 //Standard output format for this class
739 //AliITSsimulation::Print(os);
741 *os << fDifConst[0] <<","<< fDifConst[1] <<",";
742 *os << fDriftVel[0] <<","<< fDriftVel[1];
743 //*os <<","; fDCS->Print(os);
744 //*os <<","; fMapA2->Print(os);
746 //______________________________________________________________________
747 void AliITSsimulationSSD::Read(istream *is){
748 // Standard output streaming function.
750 //AliITSsimulation::Read(is);
752 *is >> fDifConst[0] >> fDifConst[1];
753 *is >> fDriftVel[0] >> fDriftVel[1];
757 //______________________________________________________________________
758 ostream &operator<<(ostream &os,AliITSsimulationSSD &source){
759 // Standard output streaming function.
764 //______________________________________________________________________
765 istream &operator>>(istream &os,AliITSsimulationSSD &source){
766 // Standard output streaming function.
771 //______________________________________________________________________