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"
38 ClassImp(AliITSsimulationSSD)
39 ////////////////////////////////////////////////////////////////////////
41 // Author: Enrico Fragiacomo //
42 // enrico.fragiacomo@ts.infn.it //
43 // Last revised: june 2008 //
45 // AliITSsimulationSSD is the simulation of SSD. //
46 ////////////////////////////////////////////////////////////////////////
48 //----------------------------------------------------------------------
49 AliITSsimulationSSD::AliITSsimulationSSD():AliITSsimulation(),
61 // A default construction AliITSsimulationSSD class
63 //----------------------------------------------------------------------
64 AliITSsimulationSSD::AliITSsimulationSSD(AliITSDetTypeSim* dettyp):
65 AliITSsimulation(dettyp),
73 // AliITSDetTypeSim Pointer to the SSD dettype to be used
77 // A standard constructed AliITSsimulationSSD class
81 //----------------------------------------------------------------------
82 void AliITSsimulationSSD::Init(){
83 // Inilizer, Inilizes all of the variable as needed in a standard place.
85 // AliITSsegmentationSSD *seg Pointer to the SSD segmentation to be used
86 // AliITSCalibrationSSD *resp Pointer to the SSD responce class to be used
91 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
93 SetDriftVelocity(); // use default values in .h file
94 SetIonizeE(); // use default values in .h file
95 SetDiffConst(); // use default values in .h file
96 fpList = new AliITSpList(2,GetNStrips());
97 fMapA2 = new AliITSMapA2(seg);
99 //______________________________________________________________________
100 AliITSsimulationSSD& AliITSsimulationSSD::operator=(
101 const AliITSsimulationSSD &s){
104 if(this==&s) return *this;
106 // this->fDCS = new AliITSdcsSSD(*(s.fDCS));
107 this->fMapA2 = s.fMapA2;
108 this->fIonE = s.fIonE;
109 this->fDifConst[0] = s.fDifConst[0];
110 this->fDifConst[1] = s.fDifConst[1];
111 this->fDriftVel[0] = s.fDriftVel[0];
112 this->fDriftVel[1] = s.fDriftVel[1];
116 //______________________________________________________________________
117 AliITSsimulation& AliITSsimulationSSD::operator=(
118 const AliITSsimulation &s){
121 if(this==&s) return *this;
122 Error("AliITSsimulationSSD","Not allowed to make a = with "
123 "AliITSsimulationSSD Using default creater instead");
128 //______________________________________________________________________
129 AliITSsimulationSSD::AliITSsimulationSSD(const AliITSsimulationSSD &source):
130 AliITSsimulation(source),
131 fMapA2(source.fMapA2),
136 fDifConst[0] = source.fDifConst[0];
137 fDifConst[1] = source.fDifConst[1];
138 fDriftVel[0] = source.fDriftVel[0];
139 fDriftVel[1] = source.fDriftVel[1];
141 //______________________________________________________________________
142 AliITSsimulationSSD::~AliITSsimulationSSD() {
147 //______________________________________________________________________
148 void AliITSsimulationSSD::InitSimulationModule(Int_t module,Int_t event){
149 // Creates maps to build the list of tracks for each sumable digit
151 // Int_t module // Module number to be simulated
152 // Int_t event // Event number to be simulated
158 SetModuleNumber(module);
159 SetEventNumber(event);
163 //______________________________________________________________________
164 void AliITSsimulationSSD::FinishSDigitiseModule(){
165 // Does the Sdigits to Digits work
173 FillMapFrompList(fpList); // need to check if needed here or not????
174 SDigitToDigit(fModule,fpList);
178 //______________________________________________________________________
179 void AliITSsimulationSSD::DigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
180 // Digitizes hits for one SSD module
181 SetModuleNumber(mod->GetIndex());
183 HitsToAnalogDigits(mod,fpList);
184 SDigitToDigit(GetModuleNumber(),fpList);
189 //______________________________________________________________________
190 void AliITSsimulationSSD::SDigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
191 // Produces Summable/Analog digits and writes them to the SDigit tree.
193 HitsToAnalogDigits(mod,fpList);
195 WriteSDigits(fpList);
200 //______________________________________________________________________
201 void AliITSsimulationSSD::SDigitToDigit(Int_t module,AliITSpList *pList){
202 // Takes the pList and finishes the digitization.
204 ApplyNoise(pList,module);
205 ApplyCoupling(pList,module);
206 ApplyDeadChannels(module);
208 ChargeToSignal(module,pList);
210 //______________________________________________________________________
211 void AliITSsimulationSSD::HitsToAnalogDigits(AliITSmodule *mod,
213 // Loops over all hits to produce Analog/floating point digits. This
214 // is also the first task in producing standard digits.
215 Int_t lasttrack = -2;
217 Double_t x0=0.0, y0=0.0, z0=0.0;
218 Double_t x1=0.0, y1=0.0, z1=0.0;
220 Int_t module = mod->GetIndex();
222 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
224 TObjArray *hits = mod->GetHits();
225 Int_t nhits = hits->GetEntriesFast();
226 if (nhits<=0) return;
227 AliITSTableSSD * tav = new AliITSTableSSD(GetNStrips());
228 module = mod->GetIndex();
229 if ( mod->GetLayer() == 6 ) seg->SetLayer(6);
230 if ( mod->GetLayer() == 5 ) seg->SetLayer(5);
231 for(Int_t i=0; i<nhits; i++) {
232 // LineSegmentL returns 0 if the hit is entering
233 // If hits is exiting returns positions of entering and exiting hits
234 // Returns also energy loss
237 cout << mod->GetHit(i)->GetXL() << " "<<mod->GetHit(i)->GetYL();
238 cout << " " << mod->GetHit(i)->GetZL();
241 if (mod->LineSegmentL(i, x0, x1, y0, y1, z0, z1, de, idtrack)) {
242 HitToDigit(module, x0, y0, z0, x1, y1, z1, de,tav);
243 if (lasttrack != idtrack || i==(nhits-1)) {
244 GetList(idtrack,i,module,pList,tav);
248 } // end loop over hits
252 //----------------------------------------------------------------------
253 void AliITSsimulationSSD::HitToDigit(Int_t module, Double_t x0, Double_t y0,
254 Double_t z0, Double_t x1, Double_t y1,
255 Double_t z1, Double_t de,
256 AliITSTableSSD *tav) {
258 // hit to digit conversion
260 AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
261 // Turns hits in SSD module into one or more digits.
262 //Float_t tang[2] = {0.0,0.0};
263 //seg->Angles(tang[0], tang[1]);//stereo<<->tan(stereo)~=stereo
265 Double_t dex=0.0, dey=0.0, dez=0.0;
266 Double_t pairs; // pair generation energy per step.
267 Double_t sigma[2] = {0.,0.};// standard deviation of the diffusion gaussian
268 Double_t tdrift[2] = {0.,0.}; // time of drift
270 Double_t inf[2], sup[2], par0[2];
272 // Steps in the module are determined "manually" (i.e. No Geant)
273 // NumOfSteps divide path between entering and exiting hits in steps
274 Int_t numOfSteps = NumOfSteps(x1, y1, z1, dex, dey, dez);
275 // Enery loss is equally distributed among steps
277 pairs = de/GetIonizeE(); // e-h pairs generated
279 //-----------------------------------------------------
281 //-----------------------------------------------------
282 for(Int_t j=0; j<numOfSteps; j++) { // stepping
284 x = x0 + (j+0.5)*dex;
285 y = y0 + (j+0.5)*dey;
286 if ( y > (seg->Dy()/2+10)*1.0E-4 ) {
287 // check if particle is within the detector
288 Warning("HitToDigit",
289 "hit out of detector y0=%e,y=%e,dey=%e,j =%d module=%d, exceed=%e",
290 y0,y,dey,j,module, y-(seg->Dy()/2+10)*1.0E-4);
293 z = z0 + (j+0.5)*dez;
295 if(GetDebug(4)) cout <<"HitToDigit "<<x<<" "<<y<<" "<<z<< " "
296 <<dex<<" "<<dey<<" "<<dez<<endl;
298 if(seg->GetLayer()==6) {
299 y=-y; // Lay6 module has sensor up-side-down!!!
302 // w is the coord. perpendicular to the strips
303 // Float_t xp=x*1.e+4,zp=z*1.e+4; // microns
305 seg->GetPadTxz(xp,zp);
308 //---------------------------------------------------------
310 //------------------------------------------------------------
313 // calculate drift time
314 // y is the minimum path
315 tdrift[0] = (y+(seg->Dy()*1.0E-4)/2)/GetDriftVelocity(0);
317 w = xp; // P side strip number
319 if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
320 // this check rejects hits in regions not covered by strips
321 // 0.5 takes into account boundaries
322 if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
323 return; // There are dead region on the SSD sensitive volume!!!
326 // sigma is the standard deviation of the diffusion gaussian
327 if(tdrift[k]<0) return;
329 sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
330 sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
333 Error("HitToDigit"," sigma[%d]=0",k);
338 // we integrate the diffusion gaussian from -3sigma to 3sigma
339 inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
340 sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
341 // IntegrateGaussian does the actual
342 // integration of diffusion gaussian
343 IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
345 //------------------------------------------------------
347 //-------------------------------------------------------
349 //------------------------------------------------------
351 //-------------------------------------------------------
353 tdrift[1] = ((seg->Dy()*1.0E-4)/2-y)/GetDriftVelocity(1);
355 //tang[k]=TMath::Tan(tang[k]);
357 w = zp; // N side strip number
359 if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
360 // this check rejects hits in regions not covered by strips
361 // 0.5 takes into account boundaries
362 if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
363 return; // There are dead region on the SSD sensitive volume.
366 // sigma is the standard deviation of the diffusion gaussian
367 if(tdrift[k]<0) return;
369 sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
370 sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
373 Error("HitToDigit"," sigma[%d]=0",k);
378 // we integrate the diffusion gaussian from -3sigma to 3sigma
379 inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
380 sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
381 // IntegrateGaussian does the actual
382 // integration of diffusion gaussian
383 IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
385 //-------------------------------------------------
387 //-------------------------------------------------
393 //______________________________________________________________________
394 void AliITSsimulationSSD::ApplyNoise(AliITSpList *pList,Int_t module){
397 Double_t signal,noise;
398 AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
401 for(ix=0;ix<GetNStrips();ix++){ // loop over strips
404 noise = (Double_t) gRandom->Gaus(0,res->GetNoiseP(ix));
406 // need to calibrate noise
407 // NOTE. noise from the calibration database comes uncalibrated,
408 // it needs to be calibrated in order to be added
409 // to the signal. It will be decalibrated later on together with the noise
410 noise *= (Double_t) res->GetGainP(ix);
412 // noise comes in ADC channels from the calibration database
413 // It needs to be converted back to electronVolts
414 noise /= res->GetSSDDEvToADC(1.);
416 // Finally, noise is added to the signal
417 signal = noise + fMapA2->GetSignal(0,ix);//get signal from map
418 fMapA2->SetHit(0,ix,signal); // give back signal to map
419 if(signal>0.0) pList->AddNoise(0,ix,module,noise);
423 for(ix=0;ix<GetNStrips();ix++){ // loop over strips
424 noise = (Double_t) gRandom->Gaus(0,res->GetNoiseN(ix));// give noise to signal
425 noise *= (Double_t) res->GetGainN(ix);
426 noise /= res->GetSSDDEvToADC(1.);
427 signal = noise + fMapA2->GetSignal(1,ix);//get signal from map
428 fMapA2->SetHit(1,ix,signal); // give back signal to map
429 if(signal>0.0) pList->AddNoise(1,ix,module,noise);
433 //______________________________________________________________________
434 void AliITSsimulationSSD::ApplyCoupling(AliITSpList *pList,Int_t module) {
435 // Apply the effect of electronic coupling between channels
438 //AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
439 AliITSSimuParam* res = fDetType->GetSimuParam();
441 Double_t *contrLeft = new Double_t[GetNStrips()];
442 Double_t *contrRight = new Double_t[GetNStrips()];
445 for(ix=0;ix<GetNStrips();ix++){
446 if(ix>0) contrLeft[ix] = fMapA2->GetSignal(0,ix-1)*res->GetSSDCouplingPL();
447 else contrLeft[ix] = 0.0;
448 if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(0,ix+1)*res->GetSSDCouplingPR();
449 else contrRight[ix] = 0.0;
450 } // loop over strips
452 for(ix=0;ix<GetNStrips();ix++){
453 signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingPL() * fMapA2->GetSignal(0,ix)
454 - res->GetSSDCouplingPR() * fMapA2->GetSignal(0,ix);
455 fMapA2->AddSignal(0,ix,signal);
456 if(signal>0.0) pList->AddNoise(0,ix,module,signal);
457 } // loop over strips
460 for(ix=0;ix<GetNStrips();ix++){
461 if(ix>0) contrLeft[ix] = fMapA2->GetSignal(1,ix-1)*res->GetSSDCouplingNL();
462 else contrLeft[ix] = 0.0;
463 if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(1,ix+1)*res->GetSSDCouplingNR();
464 else contrRight[ix] = 0.0;
465 } // loop over strips
467 for(ix=0;ix<GetNStrips();ix++){
468 signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingNL() * fMapA2->GetSignal(0,ix)
469 - res->GetSSDCouplingNR() * fMapA2->GetSignal(0,ix);
470 fMapA2->AddSignal(1,ix,signal);
471 if(signal>0.0) pList->AddNoise(1,ix,module,signal);
472 } // loop over strips
476 delete [] contrRight;
479 //______________________________________________________________________
480 void AliITSsimulationSSD::ApplyDeadChannels(Int_t module) {
481 // Kill dead channels setting gain to zero
483 AliITSCalibrationSSD* res = (AliITSCalibrationSSD*)GetCalibrationModel(module);
485 for(Int_t i=0;i<GetNStrips();i++){
487 if(res->IsPChannelBad(i)) res->SetGainP(i,0.0);
488 if(res->IsNChannelBad(i)) res->SetGainN(i,0.0);
490 } // loop over strips
494 //______________________________________________________________________
495 Float_t AliITSsimulationSSD::F(Float_t av, Float_t x, Float_t s) {
496 // Computes the integral of a gaussian using Error Function
497 Float_t sqrt2 = TMath::Sqrt(2.0);
498 Float_t sigm2 = sqrt2*s;
501 integral = 0.5 * TMath::Erf( (x - av) / sigm2);
504 //______________________________________________________________________
505 void AliITSsimulationSSD::IntegrateGaussian(Int_t k,Double_t par, Double_t w,
507 Double_t inf, Double_t sup,
508 AliITSTableSSD *tav) {
509 // integrate the diffusion gaussian
510 // remind: inf and sup are w-3sigma and w+3sigma
511 // we could define them here instead of passing them
512 // this way we are free to introduce asimmetry
514 Double_t a=0.0, b=0.0;
515 Double_t dXCharge1 = 0.0, dXCharge2 = 0.0;
516 // dXCharge1 and 2 are the charge to two neighbouring strips
517 // Watch that we only involve at least two strips
518 // Numbers greater than 2 of strips in a cluster depend on
519 // geometry of the track and delta rays, not charge diffusion!
521 Double_t strip = TMath::Floor(w); // closest strip on the left
523 if ( TMath::Abs((strip - w)) < 0.5) {
524 // gaussian mean is closer to strip on the left
525 a = inf; // integration starting point
526 if((strip+0.5)<=sup) {
527 // this means that the tail of the gaussian goes beyond
528 // the middle point between strips ---> part of the signal
529 // is given to the strip on the right
530 b = strip + 0.5; // integration stopping point
531 dXCharge1 = F( w, b, sigma) - F(w, a, sigma);
532 dXCharge2 = F( w, sup, sigma) - F(w ,b, sigma);
534 // this means that all the charge is given to the strip on the left
536 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
539 dXCharge1 = par * dXCharge1;// normalize by mean of number of carriers
540 dXCharge2 = par * dXCharge2;
542 // for the time being, signal is the charge
543 // in ChargeToSignal signal is converted in ADC channel
544 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
545 tav->Add(k,(Int_t)strip);
546 if(((Int_t) strip) < (GetNStrips()-1)) {
547 // strip doesn't have to be the last (remind: last=GetNStrips()-1)
548 // otherwise part of the charge is lost
549 fMapA2->AddSignal(k,((Int_t)strip+1),dXCharge2);
550 tav->Add(k,((Int_t)(strip+1)));
553 // gaussian mean is closer to strip on the right
554 strip++; // move to strip on the rigth
555 b = sup; // now you know where to stop integrating
556 if((strip-0.5)>=inf) {
557 // tail of diffusion gaussian on the left goes left of
558 // middle point between strips
559 a = strip - 0.5; // integration starting point
560 dXCharge1 = F(w, b, sigma) - F(w, a, sigma);
561 dXCharge2 = F(w, a, sigma) - F(w, inf, sigma);
564 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
567 dXCharge1 = par * dXCharge1; // normalize by means of carriers
568 dXCharge2 = par * dXCharge2;
569 // for the time being, signal is the charge
570 // in ChargeToSignal signal is converted in ADC channel
571 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
572 tav->Add(k,(Int_t)strip);
573 if(((Int_t) strip) > 0) {
574 // strip doesn't have to be the first
575 // otherwise part of the charge is lost
576 fMapA2->AddSignal(k,((Int_t)strip-1),dXCharge2);
577 tav->Add(k,((Int_t)(strip-1)));
581 //______________________________________________________________________
582 Int_t AliITSsimulationSSD::NumOfSteps(Double_t x, Double_t y, Double_t z,
583 Double_t &dex,Double_t &dey,
586 // it also returns steps for each coord
587 //AliITSsegmentationSSD *seg = new AliITSsegmentationSSD();
589 Double_t step = 25E-4;
590 //step = (Double_t) seg->GetStepSize(); // step size (cm)
591 Int_t numOfSteps = (Int_t) (TMath::Sqrt(x*x+y*y+z*z)/step);
593 if (numOfSteps < 1) numOfSteps = 1; // one step, at least
596 // we could condition the stepping depending on the incident angle
604 //----------------------------------------------------------------------
605 void AliITSsimulationSSD::GetList(Int_t label,Int_t hit,Int_t mod,
606 AliITSpList *pList,AliITSTableSSD *tav) {
607 // loop over nonzero digits
611 for(Int_t k=0; k<2; k++) {
614 signal = fMapA2->GetSignal(k,ix);
618 } // end if signal==0.0
619 // check the signal magnitude
620 for(i=0;i<pList->GetNSignals(k,ix);i++){
621 signal -= pList->GetTSignal(k,ix,i);
623 // compare the new signal with already existing list
624 if(signal>0)pList->AddSignal(k,ix,label,hit,mod,signal);
626 } // end of loop on strips
627 } // end of loop on P/N side
630 //----------------------------------------------------------------------
631 void AliITSsimulationSSD::ChargeToSignal(Int_t module,AliITSpList *pList) {
633 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
634 Float_t threshold = 0.;
635 Int_t size = AliITSdigitSSD::GetNTracks();
636 Int_t * digits = new Int_t[size];
637 Int_t * tracks = new Int_t[size];
638 Int_t * hits = new Int_t[size];
640 Float_t charges[3] = {0.0,0.0,0.0};
642 AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
643 AliITSSimuParam* simpar = fDetType->GetSimuParam();
645 for(Int_t k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
646 for(Int_t ix=0;ix<GetNStrips();ix++){ // loop over strips
648 // if strip is dead -> gain=0
649 if( ((k==0)&&(res->GetGainP(ix)==0)) || ((k==1)&&(res->GetGainN(ix)==0))) continue;
651 signal = fMapA2->GetSignal(k,ix);
652 // signal has to be uncalibrated
653 // In real life, gains are supposed to be calculated from calibration runs,
654 // stored in the calibration DB and used in the reconstruction
655 // (see AliITSClusterFinderSSD.cxx)
656 if(k==0) signal /= res->GetGainP(ix);
657 else signal /= res->GetGainN(ix);
659 // signal is converted in unit of ADC
660 signal = res->GetSSDDEvToADC(signal);
661 if(signal>4096.) signal = 4096.;//if exceeding, accumulate last one
663 // threshold for zero suppression is set on the basis of the noise
664 // A good value is 3*sigma_noise
665 if(k==0) threshold = res->GetNoiseP(ix);
666 else threshold = res->GetNoiseN(ix);
668 threshold *= simpar->GetSSDZSThreshold(); // threshold at 3 sigma noise
670 if(signal < threshold) continue;
671 //cout<<signal<<" "<<threshold<<endl;
675 digits[2] = TMath::Nint(signal);
676 for(j1=0;j1<size;j1++)if(j1<pList->GetNEntries()){
677 // only three in digit.
678 tracks[j1] = pList->GetTrack(k,ix,j1);
679 hits[j1] = pList->GetHit(k,ix,j1);
685 aliITS->AddSimDigit(2,0,digits,tracks,hits,charges);
692 //______________________________________________________________________
693 void AliITSsimulationSSD::WriteSDigits(AliITSpList *pList){
694 // Fills the Summable digits Tree
696 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
698 pList->GetMaxMapIndex(ni,nj);
699 for(i=0;i<ni;i++)for(j=0;j<nj;j++){
700 if(pList->GetSignalOnly(i,j)>0.0){
701 aliITS->AddSumDigit(*(pList->GetpListItem(i,j)));
702 if(GetDebug(4)) cout << "pListSSD: "<<*(pList->GetpListItem(i,j))
708 //______________________________________________________________________
709 void AliITSsimulationSSD::FillMapFrompList(AliITSpList *pList){
710 // Fills fMap2A from the pList of Summable digits
713 for(k=0;k<2;k++)for(ix=0;ix<GetNStrips();ix++)
714 fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix));
717 //______________________________________________________________________
718 void AliITSsimulationSSD::Print(ostream *os){
719 //Standard output format for this class
721 //AliITSsimulation::Print(os);
723 *os << fDifConst[0] <<","<< fDifConst[1] <<",";
724 *os << fDriftVel[0] <<","<< fDriftVel[1];
725 //*os <<","; fDCS->Print(os);
726 //*os <<","; fMapA2->Print(os);
728 //______________________________________________________________________
729 void AliITSsimulationSSD::Read(istream *is){
730 // Standard output streaming function.
732 //AliITSsimulation::Read(is);
734 *is >> fDifConst[0] >> fDifConst[1];
735 *is >> fDriftVel[0] >> fDriftVel[1];
739 //______________________________________________________________________
740 ostream &operator<<(ostream &os,AliITSsimulationSSD &source){
741 // Standard output streaming function.
746 //______________________________________________________________________
747 istream &operator>>(istream &os,AliITSsimulationSSD &source){
748 // Standard output streaming function.
753 //______________________________________________________________________