New class to help with buggy use of indexRange in SSD simulations.
[u/mrichter/AliRoot.git] / ITS / AliITSsimulationSSD.cxx
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57817f7c 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15/* $Id$ */
16
b0f5e3fc 17#include <stdio.h>
8a00af9a 18#include <stdlib.h>
fd61217e 19#include <iostream.h>
57817f7c 20#include <iomanip.h>
b0f5e3fc 21#include <TObjArray.h>
1ca7869b 22#include <TRandom.h>
fd61217e 23#include <TMath.h>
b0f5e3fc 24
fd61217e 25#include "AliITSmodule.h"
57817f7c 26#include "AliITSMapA2.h"
c7a4dac0 27#include "AliITSpList.h"
9e8d6423 28#include "AliITSresponseSSD.h"
c7a4dac0 29#include "AliITSsegmentationSSD.h"
b0f5e3fc 30#include "AliITSdcsSSD.h"
31#include "AliITS.h"
32#include "AliRun.h"
0315d466 33#include "AliITSgeom.h"
57817f7c 34#include "AliITSsimulationSSD.h"
b0f5e3fc 35
36ClassImp(AliITSsimulationSSD);
fd61217e 37////////////////////////////////////////////////////////////////////////
38// Version: 0
39// Written by Enrico Fragiacomo
40// July 2000
41//
42// AliITSsimulationSSD is the simulation of SSDs.
43
57817f7c 44//----------------------------------------------------------------------
45AliITSsimulationSSD::AliITSsimulationSSD(){
46 //default Constructor
47
48 fDCS = 0;
57817f7c 49 fDifConst[0] = fDifConst[1] = 0.0;
50 fDriftVel[0] = fDriftVel[1] = 0.0;
51 fMapA2 = 0;
52}
0315d466 53//----------------------------------------------------------------------
b0f5e3fc 54AliITSsimulationSSD::AliITSsimulationSSD(AliITSsegmentation *seg,
55 AliITSresponse *resp){
0315d466 56 // Constructor
b0f5e3fc 57
c7a4dac0 58 fDCS = 0;
59 fDifConst[0] = fDifConst[1] = 0.0;
60 fDriftVel[0] = fDriftVel[1] = 0.0;
61 fMapA2 = 0;
62 Init((AliITSsegmentationSSD*)seg,(AliITSresponseSSD*)resp);
63}
64//----------------------------------------------------------------------
65void AliITSsimulationSSD::Init(AliITSsegmentationSSD *seg,
66 AliITSresponseSSD *resp){
67 // Constructor
68
57817f7c 69 fSegmentation = seg;
70 fResponse = resp;
0315d466 71 Float_t noise[2] = {0.,0.};
72 fResponse->GetNoiseParam(noise[0],noise[1]); // retrieves noise parameters
57817f7c 73 fDCS = new AliITSdcsSSD(seg,resp);
74
57817f7c 75 SetDriftVelocity(); // use default values in .h file
76 SetIonizeE(); // use default values in .h file
77 SetDiffConst(); // use default values in .h file
78 fMapA2 = new AliITSMapA2(fSegmentation);
b0f5e3fc 79}
0315d466 80//______________________________________________________________________
57817f7c 81AliITSsimulationSSD& AliITSsimulationSSD::operator=(
82 const AliITSsimulationSSD &s){
0315d466 83 // Operator =
fd61217e 84
57817f7c 85 if(this==&s) return *this;
86
87 this->fDCS = new AliITSdcsSSD(*(s.fDCS));
88 this->fMapA2 = s.fMapA2;
57817f7c 89 this->fIonE = s.fIonE;
90 this->fDifConst[0] = s.fDifConst[0];
91 this->fDifConst[1] = s.fDifConst[1];
92 this->fDriftVel[0] = s.fDriftVel[0];
93 this->fDriftVel[1] = s.fDriftVel[1];
b0f5e3fc 94 return *this;
95}
57817f7c 96//______________________________________________________________________
97AliITSsimulationSSD::AliITSsimulationSSD(const AliITSsimulationSSD &source){
0315d466 98 // copy constructor
fd61217e 99
0315d466 100 *this = source;
b0f5e3fc 101}
0315d466 102//______________________________________________________________________
b0f5e3fc 103AliITSsimulationSSD::~AliITSsimulationSSD() {
0315d466 104 // destructor
fd61217e 105 delete fMapA2;
b0f5e3fc 106 delete fDCS;
0315d466 107}
57817f7c 108//______________________________________________________________________
c7a4dac0 109void AliITSsimulationSSD::DigitiseModule(AliITSmodule *mod,
110 Int_t dummy0,Int_t dummy1) {
111 // Digitizes hits for one SSD module
112 Int_t module = mod->GetIndex();
113 AliITSpList *pList = new AliITSpList(2,GetNStrips());
0315d466 114
c7a4dac0 115 HitsToAnalogDigits(mod,pList);
116 SDigitToDigit(module,pList);
0315d466 117
c7a4dac0 118 delete pList;
119 fMapA2->ClearMap();
120}
121//______________________________________________________________________
122void AliITSsimulationSSD::SDigitiseModule(AliITSmodule *mod,Int_t dummy0,
123 Int_t dummy1) {
124 // Produces Summable/Analog digits and writes them to the SDigit tree.
125 AliITSpList *pList = new AliITSpList(2,GetNStrips());
126
127 HitsToAnalogDigits(mod,pList);
128
129 WriteSDigits(pList);
130
131 delete pList;
132 fMapA2->ClearMap();
133}
134//______________________________________________________________________
135void AliITSsimulationSSD::SDigitToDigit(Int_t module,AliITSpList *pList){
136 // Takes the pList and finishes the digitization.
fc2bd64b 137
138// FillMapFrompList(pList); //commented out to avoid double counting of the
139 //charge
c7a4dac0 140
141 ApplyNoise(pList,module);
142 ApplyCoupling(pList,module);
143
144 ChargeToSignal(pList);
145}
146//______________________________________________________________________
147void AliITSsimulationSSD::HitsToAnalogDigits(AliITSmodule *mod,
148 AliITSpList *pList){
149 // Loops over all hits to produce Analog/floating point digits. This
150 // is also the first task in producing standard digits.
0315d466 151 Int_t indexRange[4] = {0,0,0,0};
57817f7c 152 static Bool_t first = kTRUE;
153 Int_t lasttrack = -2;
154 Int_t idtrack = -2;
c7a4dac0 155 Double_t x0=0.0, y0=0.0, z0=0.0;
156 Double_t x1=0.0, y1=0.0, z1=0.0;
157 Double_t de=0.0;
158 Int_t module = mod->GetIndex();
159
160 TObjArray *hits = mod->GetHits();
161 Int_t nhits = hits->GetEntriesFast();
162 if (nhits<=0) return;
163
164 module = mod->GetIndex();
165 if ( mod->GetLayer() == 6 ) GetSegmentation()->SetLayer(6);
166 if ( mod->GetLayer() == 5 ) GetSegmentation()->SetLayer(5);
167
0315d466 168 for(Int_t i=0; i<nhits; i++) {
169 // LineSegmentL returns 0 if the hit is entering
170 // If hits is exiting returns positions of entering and exiting hits
171 // Returns also energy loss
172
173 if (mod->LineSegmentL(i, x0, x1, y0, y1, z0, z1, de, idtrack)) {
174 HitToDigit(module, x0, y0, z0, x1, y1, z1, de, indexRange, first);
fd61217e 175
0315d466 176 if (lasttrack != idtrack || i==(nhits-1)) {
c7a4dac0 177 GetList(idtrack,i,module,pList,indexRange);
0315d466 178 first=kTRUE;
179 } // end if
180 lasttrack=idtrack;
181 } // end if
182 } // end loop over hits
c7a4dac0 183 return;
b0f5e3fc 184}
0315d466 185//----------------------------------------------------------------------
fd61217e 186void AliITSsimulationSSD::HitToDigit(Int_t module, Double_t x0, Double_t y0,
187 Double_t z0, Double_t x1, Double_t y1,
188 Double_t z1, Double_t de,
189 Int_t *indexRange, Bool_t first) {
0315d466 190 // Turns hits in SSD module into one or more digits.
191
192 Float_t tang[2] = {0.0,0.0};
57817f7c 193 GetSegmentation()->Angles(tang[0], tang[1]);//stereo<<->tan(stereo)~=stereo
0315d466 194 Double_t x, y, z;
195 Double_t dex=0.0, dey=0.0, dez=0.0;
57817f7c 196 Double_t pairs; // pair generation energy per step.
0315d466 197 Double_t sigma[2] = {0.,0.};// standard deviation of the diffusion gaussian
0315d466 198 Double_t tdrift[2] = {0.,0.}; // time of drift
0315d466 199 Double_t w;
200 Double_t inf[2], sup[2], par0[2];
57817f7c 201
0315d466 202 // Steps in the module are determined "manually" (i.e. No Geant)
203 // NumOfSteps divide path between entering and exiting hits in steps
204 Int_t numOfSteps = NumOfSteps(x1, y1, z1, dex, dey, dez);
fd61217e 205
0315d466 206 // Enery loss is equally distributed among steps
57817f7c 207 de = de/numOfSteps;
208 pairs = de/GetIonizeE(); // e-h pairs generated
0315d466 209
210 for(Int_t j=0; j<numOfSteps; j++) { // stepping
0315d466 211 x = x0 + (j+0.5)*dex;
212 y = y0 + (j+0.5)*dey;
57817f7c 213 if ( y > (GetSegmentation()->Dy()/2+10)*1.0E-4 ) {
0315d466 214 // check if particle is within the detector
b5456f1c 215 Warning("HitToDigit","hit out of detector y0=%e,y=%e,dey=%e,j =%e",
216 y0,y,dey,j);
0315d466 217 return;
218 } // end if
219 z = z0 + (j+0.5)*dez;
220
221 // calculate drift time
222 // y is the minimum path
57817f7c 223 tdrift[0] = (y+(GetSegmentation()->Dy()*1.0E-4)/2)/GetDriftVelocity(0);
224 tdrift[1] = ((GetSegmentation()->Dy()*1.0E-4)/2-y)/GetDriftVelocity(1);
0315d466 225
226 for(Int_t k=0; k<2; k++) { // both sides remember: 0=Pside 1=Nside
227
228 tang[k]=TMath::Tan(tang[k]);
229
230 // w is the coord. perpendicular to the strips
231 if(k==0) {
57817f7c 232 w = (x+(GetSegmentation()->Dx()*1.0E-4)/2) -
233 (z+(GetSegmentation()->Dz()*1.0E-4)/2)*tang[k];
0315d466 234 }else{
57817f7c 235 w = (x+(GetSegmentation()->Dx()*1.0E-4)/2) +
236 (z-(GetSegmentation()->Dz()*1.0E-4)/2)*tang[k];
0315d466 237 } // end if
c7a4dac0 238 w /= (GetStripPitch()*1.0E-4); // w is converted in units of pitch
0315d466 239
c7a4dac0 240 if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
0315d466 241 // this check rejects hits in regions not covered by strips
242 // 0.5 takes into account boundaries
82136bec 243 return; // There are dead region on the SSD sensitive volume.
244 /*
245 if(k==0) Warning("HitToDigit",
246 "no strip in this region of P side");
247 else Warning"HitToDigit","no strip in this region of N side");
0315d466 248 return;
82136bec 249 */
0315d466 250 } // end if
251
252 // sigma is the standard deviation of the diffusion gaussian
0315d466 253 if(tdrift[k]<0) return;
57817f7c 254 sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
c7a4dac0 255 sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
0315d466 256 if(sigma[k]==0.0) {
b5456f1c 257 Error("HitToDigit"," sigma[%d]=0",k);
0315d466 258 exit(0);
259 } // end if
260
261 par0[k] = pairs;
262 // we integrate the diffusion gaussian from -3sigma to 3sigma
263 inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
264 sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
265 // IntegrateGaussian does the actual
266 // integration of diffusion gaussian
267 IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],
268 indexRange, first);
269 } // end for loop over side (0=Pside, 1=Nside)
270 } // end stepping
271 //delete seg;
b0f5e3fc 272}
57817f7c 273//______________________________________________________________________
c7a4dac0 274void AliITSsimulationSSD::ApplyNoise(AliITSpList *pList,Int_t module){
0315d466 275 // Apply Noise.
c7a4dac0 276 Int_t k,ix;
277 Double_t signal,noise;
278 Double_t noiseP[2] = {0.,0.};
57817f7c 279 Float_t a,b;
c7a4dac0 280
57817f7c 281 fResponse->GetNoiseParam(a,b); // retrieves noise parameters
c7a4dac0 282 noiseP[0] = (Double_t) a; noiseP[1] = (Double_t) b;
283 for(k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
284 for(ix=0;ix<GetNStrips();ix++){ // loop over strips
285 noise = gRandom->Gaus(0,noiseP[k]);// get noise to signal
286 signal = noise + fMapA2->GetSignal(k,ix);//get signal from map
0315d466 287 if(signal<0.) signal=0.0; // in case noise is negative...
57817f7c 288 fMapA2->SetHit(k,ix,signal); // give back signal to map
c7a4dac0 289 if(signal>0.0) pList->AddNoise(k,ix,module,noise);
0315d466 290 } // loop over strip
291 } // loop over k (P or N side)
b0f5e3fc 292}
0315d466 293//______________________________________________________________________
c7a4dac0 294void AliITSsimulationSSD::ApplyCoupling(AliITSpList *pList,Int_t module) {
0315d466 295 // Apply the effect of electronic coupling between channels
c7a4dac0 296 Int_t ix;
297 Double_t signalLeft=0, signalRight=0,signal=0;
0315d466 298
c7a4dac0 299 for(ix=0;ix<GetNStrips();ix++){
300 // P side coupling
57817f7c 301 if(ix>0.)signalLeft = fMapA2->GetSignal(0,ix-1)*fDCS->GetCouplingPL();
0315d466 302 else signalLeft = 0.0;
c7a4dac0 303 if(ix<(GetNStrips()-1)) signalRight = fMapA2->GetSignal(0,ix+1)*
0315d466 304 fDCS->GetCouplingPR();
305 else signalRight = 0.0;
c7a4dac0 306 signal = signalLeft + signalRight;
307 fMapA2->AddSignal(0,ix,signal);
308 if(signal>0.0) pList->AddNoise(0,ix,module,signal);
309
310 signalLeft = signalRight = signal = 0.0;
311 // N side coupling
57817f7c 312 if(ix>0.) signalLeft = fMapA2->GetSignal(1,ix-1)*fDCS->GetCouplingNL();
0315d466 313 else signalLeft = 0.0;
c7a4dac0 314 if(ix<(GetNStrips()-1)) signalRight = fMapA2->GetSignal(1,ix+1)*
0315d466 315 fDCS->GetCouplingNR();
316 else signalRight = 0.0;
c7a4dac0 317 signal = signalLeft + signalRight;
318 fMapA2->AddSignal(1,ix,signal);
319 if(signal>0.0) pList->AddNoise(1,ix,module,signal);
0315d466 320 } // loop over strips
b0f5e3fc 321}
0315d466 322//______________________________________________________________________
fd61217e 323Float_t AliITSsimulationSSD::F(Float_t av, Float_t x, Float_t s) {
0315d466 324 // Computes the integral of a gaussian using Error Function
325 Float_t sqrt2 = TMath::Sqrt(2.0);
326 Float_t sigm2 = sqrt2*s;
327 Float_t integral;
fd61217e 328
0315d466 329 integral = 0.5 * TMath::Erf( (x - av) / sigm2);
330 return integral;
331}
332//______________________________________________________________________
fd61217e 333void AliITSsimulationSSD::IntegrateGaussian(Int_t k,Double_t par, Double_t w,
334 Double_t sigma,
335 Double_t inf, Double_t sup,
336 Int_t *indexRange, Bool_t first) {
0315d466 337 // integrate the diffusion gaussian
338 // remind: inf and sup are w-3sigma and w+3sigma
339 // we could define them here instead of passing them
340 // this way we are free to introduce asimmetry
341
342 Double_t a=0.0, b=0.0;
57817f7c 343 Double_t dXCharge1 = 0.0, dXCharge2 = 0.0;
0315d466 344 // dXCharge1 and 2 are the charge to two neighbouring strips
345 // Watch that we only involve at least two strips
346 // Numbers greater than 2 of strips in a cluster depend on
347 // geometry of the track and delta rays, not charge diffusion!
fd61217e 348
0315d466 349 Double_t strip = TMath::Floor(w); // clostest strip on the left
350
351 if ( TMath::Abs((strip - w)) < 0.5) {
352 // gaussian mean is closer to strip on the left
353 a = inf; // integration starting point
354 if((strip+0.5)<=sup) {
355 // this means that the tail of the gaussian goes beyond
356 // the middle point between strips ---> part of the signal
357 // is given to the strip on the right
358 b = strip + 0.5; // integration stopping point
359 dXCharge1 = F( w, b, sigma) - F(w, a, sigma);
360 dXCharge2 = F( w, sup, sigma) - F(w ,b, sigma);
361 }else {
362 // this means that all the charge is given to the strip on the left
363 b = sup;
364 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
365 dXCharge2 = 0.0;
366 } // end if
367
368 dXCharge1 = par * dXCharge1;// normalize by mean of number of carriers
369 dXCharge2 = par * dXCharge2;
370
371 // for the time being, signal is the charge
372 // in ChargeToSignal signal is converted in ADC channel
b48af428 373 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
c7a4dac0 374 if(((Int_t) strip) < (GetNStrips()-1)) {
375 // strip doesn't have to be the last (remind: last=GetNStrips()-1)
0315d466 376 // otherwise part of the charge is lost
b48af428 377 fMapA2->AddSignal(k,((Int_t)strip+1),dXCharge2);
0315d466 378 } // end if
fd61217e 379
0315d466 380 if(dXCharge1 > 1.) {
381 if (first) {
57817f7c 382 indexRange[k*2+0] = indexRange[k*2+1]=(Int_t) strip;
0315d466 383 first=kFALSE;
384 } // end if first
385
386 indexRange[k*2+0]=TMath::Min(indexRange[k*2+0],(Int_t) strip);
387 indexRange[k*2+1]=TMath::Max(indexRange[k*2+1],(Int_t) strip);
388 } // dXCharge > 1 e-
389
390 }else{
391 // gaussian mean is closer to strip on the right
392 strip++; // move to strip on the rigth
393 b = sup; // now you know where to stop integrating
394 if((strip-0.5)>=inf) {
395 // tail of diffusion gaussian on the left goes left of
396 // middle point between strips
397 a = strip - 0.5; // integration starting point
398 dXCharge1 = F(w, b, sigma) - F(w, a, sigma);
399 dXCharge2 = F(w, a, sigma) - F(w, inf, sigma);
400 }else {
401 a = inf;
402 dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
403 dXCharge2 = 0.0;
404 } // end if
fd61217e 405
0315d466 406 dXCharge1 = par * dXCharge1; // normalize by means of carriers
407 dXCharge2 = par * dXCharge2;
408
409 // for the time being, signal is the charge
410 // in ChargeToSignal signal is converted in ADC channel
b48af428 411 fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
0315d466 412 if(((Int_t) strip) > 0) {
413 // strip doesn't have to be the first
414 // otherwise part of the charge is lost
b48af428 415 fMapA2->AddSignal(k,((Int_t)strip-1),dXCharge2);
0315d466 416 } // end if
fd61217e 417
0315d466 418 if(dXCharge1 > 1.) {
419 if (first) {
420 indexRange[k*2+0]=indexRange[k*2+1]=(Int_t) strip;
421 first=kFALSE;
422 } // end if first
423
424 indexRange[k*2+0]=TMath::Min(indexRange[k*2+0],(Int_t) strip);
425 indexRange[k*2+1]=TMath::Max(indexRange[k*2+1],(Int_t) strip);
426 } // dXCharge > 1 e-
427 } // end if
b0f5e3fc 428}
0315d466 429//______________________________________________________________________
fd61217e 430Int_t AliITSsimulationSSD::NumOfSteps(Double_t x, Double_t y, Double_t z,
0315d466 431 Double_t & dex,Double_t & dey,Double_t & dez){
432 // number of steps
433 // it also returns steps for each coord
434 //AliITSsegmentationSSD *seg = new AliITSsegmentationSSD();
fd61217e 435
0315d466 436 Double_t step = 25E-4;
437 //step = (Double_t) seg->GetStepSize(); // step size (cm)
438 Int_t numOfSteps = (Int_t) (TMath::Sqrt(x*x+y*y+z*z)/step);
fd61217e 439
0315d466 440 if (numOfSteps < 1) numOfSteps = 1; // one step, at least
fd61217e 441
0315d466 442 // we could condition the stepping depending on the incident angle
443 // of the track
444 dex = x/numOfSteps;
445 dey = y/numOfSteps;
446 dez = z/numOfSteps;
b0f5e3fc 447
0315d466 448 return numOfSteps;
fd61217e 449}
0315d466 450//----------------------------------------------------------------------
c7a4dac0 451void AliITSsimulationSSD::GetList(Int_t label,Int_t hit,Int_t mod,
452 AliITSpList *pList,Int_t *indexRange) {
0315d466 453 // loop over nonzero digits
c7a4dac0 454 Int_t ix,i;
455 Double_t signal=0.;
fd61217e 456
0315d466 457 for(Int_t k=0; k<2; k++) {
458 for(ix=indexRange[k*2+0];ix<indexRange[k*2+1]+1;ix++){
c7a4dac0 459// if(indexRange[k*2+0]<indexRange[k*2+1])
57817f7c 460 signal = fMapA2->GetSignal(k,ix);
c7a4dac0 461 if(signal==0.0) continue;
0315d466 462 // check the signal magnitude
c7a4dac0 463 for(i=0;i<pList->GetNSignals(k,ix);i++)
464 signal -= pList->GetTSignal(k,ix,i);
0315d466 465 // compare the new signal with already existing list
c7a4dac0 466 pList->AddSignal(k,ix,label,hit,mod,signal);
0315d466 467 } // end of loop pixels in x
468 } // end of loop over pixels in z
fd61217e 469}
0315d466 470//----------------------------------------------------------------------
c7a4dac0 471void AliITSsimulationSSD::ChargeToSignal(AliITSpList *pList) {
0315d466 472 // charge to signal
c7a4dac0 473 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
0315d466 474 Float_t threshold = 0.;
c7a4dac0 475 Int_t digits[3], tracks[3],hits[3],j1;
476 Float_t charges[3] = {0.0,0.0,0.0};
477 Float_t signal;
0315d466 478 Float_t noise[2] = {0.,0.};
479
c7a4dac0 480 ((AliITSresponseSSD*)fResponse)->GetNoiseParam(noise[0],noise[1]);
0315d466 481
c7a4dac0 482 for(Int_t k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
0315d466 483 // Threshold for zero-suppression
484 // It can be defined in AliITSresponseSSD
485 // threshold = (Float_t)fResponse->MinVal(k);
486 // I prefer to think adjusting the threshold "manually", looking
487 // at the scope, and considering noise standard deviation
c7a4dac0 488 threshold = 4.0*noise[k]; // 4 times noise is a choice
489 for(Int_t ix=0;ix<GetNStrips();ix++){ // loop over strips
490 if(fMapA2->GetSignal(k,ix) <= threshold) continue;
491 // convert to ADC signal
492 signal = ((AliITSresponseSSD*)fResponse)->DEvToADC(
493 fMapA2->GetSignal(k,ix));
494 if(signal>1024.) signal = 1024.;//if exceeding, accumulate last one
495 digits[0] = k;
496 digits[1] = ix;
497 digits[2] = (Int_t) signal;
498 for(j1=0;j1<3;j1++){ // only three in digit.
499 tracks[j1] = pList->GetTrack(k,ix,j1);
500 hits[j1] = pList->GetHit(k,ix,j1);
501 } // end for j1
502 // finally add digit
503 aliITS->AddSimDigit(2,0,digits,tracks,hits,charges);
0315d466 504 } // end for ix
505 } // end for k
c7a4dac0 506}
507//______________________________________________________________________
508void AliITSsimulationSSD::WriteSDigits(AliITSpList *pList){
509 // Fills the Summable digits Tree
510 Int_t i,ni,j,nj;
511 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
512
513 pList->GetMaxMapIndex(ni,nj);
514 for(i=0;i<ni;i++)for(j=0;j<nj;j++){
515 if(pList->GetSignalOnly(i,j)>0.0){
516 aliITS->AddSumDigit(*(pList->GetpListItem(i,j)));
517// cout << "pListSSD: " << *(pList->GetpListItem(i,j)) << endl;
518 } // end if
519 } // end for i,j
520 return;
521}
522//______________________________________________________________________
523void AliITSsimulationSSD::FillMapFrompList(AliITSpList *pList){
524 // Fills fMap2A from the pList of Summable digits
525 Int_t k,ix;
526
527 for(k=0;k<2;k++)for(ix=0;ix<GetNStrips();ix++)
528 fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix));
529 return;
b0f5e3fc 530}
57817f7c 531//______________________________________________________________________
532void AliITSsimulationSSD::Print(ostream *os){
533 //Standard output format for this class
534
535 //AliITSsimulation::Print(os);
c7a4dac0 536 *os << fIonE <<",";
57817f7c 537 *os << fDifConst[0] <<","<< fDifConst[1] <<",";
538 *os << fDriftVel[0] <<","<< fDriftVel[1];
539 //*os <<","; fDCS->Print(os);
540 //*os <<","; fMapA2->Print(os);
541}
542//______________________________________________________________________
543void AliITSsimulationSSD::Read(istream *is){
544 // Standard output streaming function.
545
546 //AliITSsimulation::Read(is);
c7a4dac0 547 *is >> fIonE;
57817f7c 548 *is >> fDifConst[0] >> fDifConst[1];
549 *is >> fDriftVel[0] >> fDriftVel[1];
550 //fDCS->Read(is);
551 //fMapA2->Read(is);
552}
553//______________________________________________________________________
554ostream &operator<<(ostream &os,AliITSsimulationSSD &source){
555 // Standard output streaming function.
556
557 source.Print(&os);
558 return os;
559}
560//______________________________________________________________________
561istream &operator>>(istream &os,AliITSsimulationSSD &source){
562 // Standard output streaming function.
563
564 source.Read(&os);
565 return os;
566}
c7a4dac0 567//______________________________________________________________________