Default track number set to -3 and not 0.
[u/mrichter/AliRoot.git] / ITS / AliITSsimulationSDD.cxx
CommitLineData
b0f5e3fc 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
16
17#include <iostream.h>
18#include <stdlib.h>
19#include <stdio.h>
20#include <string.h>
21
b0f5e3fc 22#include "AliRun.h"
e8189707 23#include "AliITS.h"
24#include "AliITSMapA1.h"
25#include "AliITSMapA2.h"
b0f5e3fc 26#include "AliITSsimulationSDD.h"
e8189707 27#include "AliITSetfSDD.h"
28#include "AliITSRawData.h"
b0f5e3fc 29#include "AliITSHuffman.h"
30
b0f5e3fc 31ClassImp(AliITSsimulationSDD)
32////////////////////////////////////////////////////////////////////////
33// Version: 0
34// Written by Piergiorgio Cerello
35// November 23 1999
36//
37// AliITSsimulationSDD is the simulation of SDDs.
38 //
39//Begin_Html
40/*
41<img src="picts/ITS/AliITShit_Class_Diagram.gif">
42</pre>
43<br clear=left>
44<font size=+2 color=red>
45<p>This show the relasionships between the ITS hit class and the rest of Aliroot.
46</font>
47<pre>
48*/
49//End_Html
50//_____________________________________________________________________________
51
52Int_t power(Int_t b, Int_t e) {
e8189707 53 // compute b to the e power, where both b and e are Int_ts.
b0f5e3fc 54 Int_t power = 1,i;
55 for(i=0; i<e; i++) power *= b;
56 return power;
57}
58
59//_____________________________________________
60
61void FastFourierTransform(AliITSetfSDD *alisddetf,Double_t *real,
62 Double_t *imag,Int_t direction) {
63 // Do a Fast Fourier Transform
64
65 Int_t samples = alisddetf->GetSamples();
66 Int_t l = (Int_t) ((log((Float_t) samples)/log(2.))+0.5);
67 Int_t m1 = samples;
68 Int_t m = samples/2;
69 Int_t m2 = samples/m1;
70 Int_t i,j,k;
71 for(i=1; i<=l; i++) {
72 for(j=0; j<samples; j += m1) {
73 Int_t p = 0;
74 for(k=j; k<= j+m-1; k++) {
75 Double_t wsr = alisddetf->GetWeightReal(p);
76 Double_t wsi = alisddetf->GetWeightImag(p);
77 if(direction == -1) wsi = -wsi;
78 Double_t xr = *(real+k+m);
79 Double_t xi = *(imag+k+m);
80 *(real+k+m) = wsr*(*(real+k)-xr) - wsi*(*(imag+k)-xi);
81 *(imag+k+m) = wsr*(*(imag+k)-xi) + wsi*(*(real+k)-xr);
82 *(real+k) += xr;
83 *(imag+k) += xi;
84 p += m2;
85 }
86 }
87 m1 = m;
88 m /= 2;
89 m2 += m2;
90 }
91
92 for(j=0; j<samples; j++) {
93 Int_t j1 = j;
94 Int_t p = 0;
95 Int_t i1;
96 for(i1=1; i1<=l; i1++) {
97 Int_t j2 = j1;
98 j1 /= 2;
99 p = p + p + j2 - j1 - j1;
100 }
101 if(p >= j) {
102 Double_t xr = *(real+j);
103 Double_t xi = *(imag+j);
104 *(real+j) = *(real+p);
105 *(imag+j) = *(imag+p);
106 *(real+p) = xr;
107 *(imag+p) = xi;
108 }
109 }
110 if(direction == -1) {
111 for(i=0; i<samples; i++) {
112 *(real+i) /= samples;
113 *(imag+i) /= samples;
114 }
115 }
116 return;
117}
118//_____________________________________________________________________________
119
120AliITSsimulationSDD::AliITSsimulationSDD(){
121 // Default constructor
122
123 fResponse = 0;
124 fSegmentation = 0;
125 fHis = 0;
126 fD.Set(0);
127 fT1.Set(0);
128 fT2.Set(0);
129 fTol.Set(0);
e8189707 130 SetScaleFourier();
131 SetPerpendTracksFlag();
5d18fa90 132 fInZR = 0;
133 fInZI = 0;
134 fOutZR = 0;
135 fOutZI = 0;
b0f5e3fc 136}
137//_____________________________________________________________________________
e8189707 138AliITSsimulationSDD::AliITSsimulationSDD(AliITSsimulationSDD &source)
139{
b0f5e3fc 140 // Copy constructor to satify Coding roules only.
141 if(this==&source) return;
142 printf("Not allowed to make a copy of AliITSsimulationSDD "
143 "Using default creater instead\n");
144 AliITSsimulationSDD();
145}
146//_____________________________________________________________________________
e8189707 147AliITSsimulationSDD& AliITSsimulationSDD::operator=(AliITSsimulationSDD &source)
148{
149 // Assignment operator to satify Coding roules only.
b0f5e3fc 150 if(this==&source) return *this;
151 printf("Not allowed to make a = with AliITSsimulationSDD "
152 "Using default creater instead\n");
153 return *this ;
154}
155//_____________________________________________________________________________
156
e8189707 157AliITSsimulationSDD::AliITSsimulationSDD(AliITSsegmentation *seg,AliITSresponse *resp)
158{
159 // Standard Constructor
b0f5e3fc 160 fResponse = resp;
161 fSegmentation = seg;
e8189707 162 SetScaleFourier();
163 SetPerpendTracksFlag();
b0f5e3fc 164
e8189707 165 fHitMap2 = new AliITSMapA2(fSegmentation,fScaleSize,1);
b0f5e3fc 166 fHitMap1 = new AliITSMapA1(fSegmentation);
167
168 //
169 fNofMaps=fSegmentation->Npz();
170 fMaxNofSamples=fSegmentation->Npx();
171
172 Float_t sddLength = fSegmentation->Dx();
173 Float_t sddWidth = fSegmentation->Dz();
174
175 Int_t dummy=0;
176 Float_t anodePitch = fSegmentation->Dpz(dummy);
177 Double_t timeStep = (Double_t)fSegmentation->Dpx(dummy);
178 Float_t driftSpeed=fResponse->DriftSpeed();
179
180 if(anodePitch*(fNofMaps/2) > sddWidth) {
181 Warning("AliITSsimulationSDD",
182 "Too many anodes %d or too big pitch %f \n",fNofMaps/2,anodePitch);
183 }
184
185 if(timeStep*fMaxNofSamples < sddLength/driftSpeed) {
186 Error("AliITSsimulationSDD",
187 "Time Interval > Allowed Time Interval: exit\n");
188 return;
189 }
190
e8189707 191 fElectronics = new AliITSetfSDD(timeStep/fScaleSize);
b0f5e3fc 192
e8189707 193 char opt1[20], opt2[20];
b0f5e3fc 194 fResponse->ParamOptions(opt1,opt2);
195 fParam=opt2;
196 char *same = strstr(opt1,"same");
197 if (same) {
198 fNoise.Set(0);
199 fBaseline.Set(0);
200 } else {
201 fNoise.Set(fNofMaps);
202 fBaseline.Set(fNofMaps);
203 }
204
205 //
e8189707 206 const char *kopt=fResponse->ZeroSuppOption();
b0f5e3fc 207 if (strstr(fParam,"file") ) {
208 fD.Set(fNofMaps);
209 fT1.Set(fNofMaps);
e8189707 210 if (strstr(kopt,"2D")) {
b0f5e3fc 211 fT2.Set(fNofMaps);
212 fTol.Set(0);
213 Init2D(); // desactivate if param change module by module
e8189707 214 } else if(strstr(kopt,"1D")) {
b0f5e3fc 215 fT2.Set(2);
216 fTol.Set(2);
217 Init1D(); // desactivate if param change module by module
218 }
219 } else {
220 fD.Set(2);
221 fTol.Set(2);
222 fT1.Set(2);
223 fT2.Set(2);
224 SetCompressParam();
225 }
226
227
228 Bool_t write=fResponse->OutputOption();
e8189707 229 if(write && strstr(kopt,"2D")) MakeTreeB();
b0f5e3fc 230
231 // call here if baseline does not change by module
232 // ReadBaseline();
233
234 fITS = (AliITS*)gAlice->GetModule("ITS");
235 Int_t size=fNofMaps*fMaxNofSamples;
236 fStream = new AliITSInStream(size);
237
e8189707 238 fInZR = new Double_t [fScaleSize*fMaxNofSamples];
239 fInZI = new Double_t [fScaleSize*fMaxNofSamples];
240 fOutZR = new Double_t [fScaleSize*fMaxNofSamples];
241 fOutZI = new Double_t [fScaleSize*fMaxNofSamples];
5d18fa90 242
b0f5e3fc 243}
244
245
246//_____________________________________________________________________________
247
248AliITSsimulationSDD::~AliITSsimulationSDD() {
249 // destructor
250
251 delete fHitMap1;
252 delete fHitMap2;
253 delete fStream;
254
255 fD.Set(0);
256 fT1.Set(0);
257 fT2.Set(0);
258 fTol.Set(0);
259 fNoise.Set(0);
260 fBaseline.Set(0);
261
262 if (fHis) {
263 fHis->Delete();
264 delete fHis;
e8189707 265 }
266 if(fInZR) delete [] fInZR;
267 if(fInZI) delete [] fInZI;
268 if(fOutZR) delete [] fOutZR;
269 if(fOutZI) delete [] fOutZI;
b0f5e3fc 270}
271//_____________________________________________________________________________
272
273void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
274 // create maps to build the lists of tracks
275 // for each digit
276
277 fModule=md;
278 fEvent=ev;
279
280 TObjArray *fHits = mod->GetHits();
281 Int_t nhits = fHits->GetEntriesFast();
282 if (!nhits) return;
283
284
285 TObjArray *list=new TObjArray;
286 static TClonesArray *padr=0;
287 if(!padr) padr=new TClonesArray("TVector",1000);
e8189707 288 Int_t arg[6] = {0,0,0,0,0,0};
b0f5e3fc 289 fHitMap1->SetArray(list);
290
291
e8189707 292 Int_t nofAnodes=fNofMaps/2;
b0f5e3fc 293
294 Float_t sddLength = fSegmentation->Dx();
295 Float_t sddWidth = fSegmentation->Dz();
296
297 Int_t dummy=0;
298 Float_t anodePitch = fSegmentation->Dpz(dummy);
299 Float_t timeStep = fSegmentation->Dpx(dummy);
300
301 Float_t driftSpeed=fResponse->DriftSpeed();
302
303 // Piergiorgio's part (apart for few variables which I made float
304 // when i thought that can be done
305
306 // Fill detector maps with GEANT hits
307 // loop over hits in the module
308
e8189707 309 const Float_t kconv=1.0e+6; // GeV->KeV
b0f5e3fc 310 Int_t ii;
311 for(ii=0; ii<nhits; ii++) {
312 AliITShit *hit = (AliITShit*) fHits->At(ii);
b0f5e3fc 313 Float_t xL[3];
e8189707 314 hit = (AliITShit*) fHits->At(ii);
b0f5e3fc 315 hit->GetPositionL(xL[0],xL[1],xL[2]);
e8189707 316 Int_t hitDetector = hit->GetDetector();
317
b0f5e3fc 318 // Deposited energy in keV
319 Float_t avpath = 0.;
320 Float_t avanod = 0.;
321 Float_t depEnergy = kconv*hit->GetIonization();
322 AliITShit *hit1 = 0;
e8189707 323 if(depEnergy != 0.) continue;
324
325 ii++;
326 Float_t xL1[3];
327 hit1 = (AliITShit*) fHits->At(ii);
328 hit1->GetPositionL(xL1[0],xL1[1],xL1[2]);
329 avpath = xL1[0];
330 avanod = xL1[2];
331 depEnergy = kconv*hit1->GetIonization();
332
333 // scale path to simulate a perpendicular track
334 if (fFlag) {
335 Float_t lC[3];
336 hit->GetPositionL(lC[0],lC[1],lC[2]);
337 Float_t lC1[3];
338 hit1->GetPositionL(lC1[0],lC1[1],lC1[2]);
339 Float_t pathInSDD = TMath::Sqrt((lC[0]-lC1[0])*(lC[0]-lC1[0])+(lC[1]-lC1[1])*(lC[1]-lC1[1])+(lC[2]-lC1[2])*(lC[2]-lC1[2]));
340 depEnergy *= (0.03/pathInSDD);
b0f5e3fc 341 }
e8189707 342
b0f5e3fc 343 Float_t avDrft = xL[0]+avpath;
344 Float_t avAnode = xL[2]+avanod;
345
346 if(avpath != 0.) avDrft /= 2.;
347 if(avanod != 0.) avAnode /= 2.;
348
349 Float_t driftPath = 10000.*avDrft;
b0f5e3fc 350 Int_t iWing = 2;
351 if(driftPath < 0) {
352 iWing = 1;
353 driftPath = -driftPath;
354 }
355 driftPath = sddLength-driftPath;
356 Int_t detector = 2*(hitDetector-1) + iWing;
357 if(driftPath < 0) {
358 cout << "Warning: negative drift path " << driftPath << endl;
359 continue;
360 }
361
362 // Drift Time
363 Float_t driftTime = driftPath/driftSpeed;
e8189707 364 Int_t timeSample = (Int_t) (fScaleSize*driftTime/timeStep + 1);
365 if(timeSample > fScaleSize*fMaxNofSamples) {
b0f5e3fc 366 cout << "Warning: Wrong Time Sample: " << timeSample << endl;
367 continue;
368 }
369
370 // Anode
e8189707 371 Float_t xAnode = 10000.*(avAnode)/anodePitch + nofAnodes/2; // +1?
372 if((xAnode+1)*anodePitch > sddWidth || xAnode*anodePitch < 0.)
b0f5e3fc 373 { cout << "Warning: Z = " << xAnode*anodePitch << endl; }
374 Int_t iAnode = (Int_t) (1.+xAnode); // xAnode?
e8189707 375 if(iAnode < 0 || iAnode > nofAnodes) {
b0f5e3fc 376 cout << "Warning: Wrong iAnode: " << iAnode << endl;
377 continue;
378 }
379
380
e8189707 381 // work with the idtrack=entry number in the TreeH for the moment
382 Int_t idhit,idtrack;
383 mod->GetHitTrackAndHitIndex(ii,idtrack,idhit);
384 //Int_t idtrack=mod->GetHitTrackIndex(ii);
b0f5e3fc 385 // or store straight away the particle position in the array
386 // of particles :
e8189707 387 Int_t itrack = hit->GetTrack();
b0f5e3fc 388
389 // Signal 2d Shape
e8189707 390 Float_t diffCoeff, s0;
391 fResponse->DiffCoeff(diffCoeff,s0);
b0f5e3fc 392
b0f5e3fc 393 // Squared Sigma along the anodes
e8189707 394 Double_t sigma2A = 2.*diffCoeff*driftTime+s0*s0;
395 Double_t sigmaA = TMath::Sqrt(sigma2A);
396 Double_t sigmaT = sigmaA/driftSpeed;
b0f5e3fc 397
398 // Peak amplitude in nanoAmpere
399 Double_t eVpairs = 3.6;
e8189707 400 Double_t amplitude = fScaleSize*160.*depEnergy/(timeStep*eVpairs*2.*acos(-1.)*sigmaT*sigmaA);
b0f5e3fc 401
e8189707 402 Float_t nsigma=fResponse->NSigmaIntegration();
b0f5e3fc 403 // Spread the charge
404 // Pixel index
405 Int_t ja = iAnode;
406 Int_t jt = timeSample;
407 // Sub-pixel index
e8189707 408 Int_t nsplit = 4; // hard-wired
b0f5e3fc 409 nsplit = (nsplit+1)/2*2;
410 // Sub-pixel size
e8189707 411 Double_t aStep = anodePitch/(nsplit*fScaleSize);
412 Double_t tStep = timeStep/(nsplit*fScaleSize);
b0f5e3fc 413 // Define SDD window corresponding to the hit
e8189707 414 Int_t anodeWindow = (Int_t) (fScaleSize*nsigma*sigmaA/anodePitch + 1);
415 Int_t timeWindow = (Int_t) (fScaleSize*nsigma*sigmaT/timeStep + 1);
416 Int_t jamin = (ja - anodeWindow/2 - 1)*fScaleSize*nsplit + 1;
417 Int_t jamax = (ja + anodeWindow/2)*fScaleSize*nsplit;
b0f5e3fc 418 if(jamin <= 0) jamin = 1;
e8189707 419 if(jamax > fScaleSize*nofAnodes*nsplit) jamax = fScaleSize*nofAnodes*nsplit;
420 Int_t jtmin = (jt - timeWindow*3 - 1)*nsplit + 1; //hard-wired
421 Int_t jtmax = (jt + timeWindow*3)*nsplit; //hard-wired
b0f5e3fc 422 if(jtmin <= 0) jtmin = 1;
e8189707 423 if(jtmax > fScaleSize*fMaxNofSamples*nsplit) jtmax = fScaleSize*fMaxNofSamples*nsplit;
424
b0f5e3fc 425 Double_t rlAnode = log(aStep*amplitude);
e8189707 426
b0f5e3fc 427 // Spread the charge in the anode-time window
428 Int_t ka;
429 for(ka=jamin; ka <=jamax; ka++) {
e8189707 430 Int_t ia = (ka-1)/(fScaleSize*nsplit) + 1;
b0f5e3fc 431 if(ia <= 0) { cout << "Warning: ia < 1: " << endl; continue; }
e8189707 432 if(ia > nofAnodes) ia = nofAnodes;
433 Double_t aExpo = (aStep*(ka-0.5)-xAnode*anodePitch)/sigmaA;
434 Double_t anodeAmplitude = rlAnode - 0.5*aExpo*aExpo;
b0f5e3fc 435 // Protect against overflows
436 if(anodeAmplitude > -87.3)
437 anodeAmplitude = exp(anodeAmplitude);
438 else
439 anodeAmplitude = 0;
e8189707 440 Int_t index = ((detector+1)%2)*nofAnodes+ia-1; // index starts from 0
b0f5e3fc 441 if(anodeAmplitude) {
442 Double_t rlTime = log(tStep*anodeAmplitude);
443 Int_t kt;
444 for(kt=jtmin; kt<=jtmax; kt++) {
e8189707 445 Int_t it = (kt-1)/nsplit+1; // it starts from 1
b0f5e3fc 446 if(it<=0) { cout << "Warning: it < 1: " << endl; continue; }
e8189707 447 if(it>fScaleSize*fMaxNofSamples) it = fScaleSize*fMaxNofSamples;
448 Double_t tExpo = (tStep*(kt-0.5)-driftTime)/sigmaT;
b0f5e3fc 449 Double_t timeAmplitude = rlTime - 0.5*tExpo*tExpo;
450 // Protect against overflows
e8189707 451 if(timeAmplitude > -87.3){
b0f5e3fc 452 timeAmplitude = exp(timeAmplitude);
e8189707 453 } else
b0f5e3fc 454 timeAmplitude = 0;
455
b0f5e3fc 456 // build the list of digits for this module
457 arg[0]=index;
458 arg[1]=it;
e8189707 459 arg[2]=itrack;
460 arg[3]=idhit;
b0f5e3fc 461 ListOfFiredCells(arg,timeAmplitude,list,padr);
462 } // loop over time in window
463 } // end if anodeAmplitude
464 } // loop over anodes in window
465 } // end loop over hits
466
b0f5e3fc 467 // introduce the electronics effects and do zero-suppression if required
e8189707 468 Int_t nentries=list->GetEntriesFast();
b0f5e3fc 469 if (nentries) {
470 ChargeToSignal();
471
e8189707 472 const char *kopt=fResponse->ZeroSuppOption();
473 ZeroSuppression(kopt);
b0f5e3fc 474 }
475
476 // clean memory
477 list->Delete();
478 delete list;
479
480 padr->Delete();
481
482 fHitMap1->ClearMap();
483 fHitMap2->ClearMap();
484
485 //gObjectTable->Print();
486}
487
488
489//____________________________________________
490
491void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
492 TObjArray *list,TClonesArray *padr){
493 // Returns the list of "fired" cells.
494
495 Int_t index=arg[0];
e8189707 496 Int_t ik=arg[1];
b0f5e3fc 497 Int_t idtrack=arg[2];
e8189707 498 Int_t idhit=arg[3];
499 Int_t counter=arg[4];
500 Int_t countadr=arg[5];
b0f5e3fc 501
e8189707 502 Double_t charge=timeAmplitude;
503 charge += fHitMap2->GetSignal(index,ik-1);
504 fHitMap2->SetHit(index, ik-1, charge);
b0f5e3fc 505
e8189707 506 Int_t digits[3];
507 Int_t it=(Int_t)((ik-1)/fScaleSize);
508
b0f5e3fc 509 digits[0]=index;
e8189707 510 digits[1]=it;
b0f5e3fc 511 digits[2]=(Int_t)timeAmplitude;
512 Float_t phys;
513 if (idtrack >= 0) phys=(Float_t)timeAmplitude;
514 else phys=0;
515
e8189707 516 Double_t cellcharge=0.;
b0f5e3fc 517 AliITSTransientDigit* pdigit;
518 // build the list of fired cells and update the info
e8189707 519 if (!fHitMap1->TestHit(index, it)) {
b0f5e3fc 520
e8189707 521 new((*padr)[countadr++]) TVector(3);
b0f5e3fc 522 TVector &trinfo=*((TVector*) (*padr)[countadr-1]);
523 trinfo(0)=(Float_t)idtrack;
e8189707 524 trinfo(1)=(Float_t)idhit;
525 trinfo(2)=(Float_t)timeAmplitude;
b0f5e3fc 526
527 list->AddAtAndExpand(
528 new AliITSTransientDigit(phys,digits),counter);
529
e8189707 530 fHitMap1->SetHit(index, it, counter);
b0f5e3fc 531 counter++;
b0f5e3fc 532 pdigit=(AliITSTransientDigit*)list->
533 At(list->GetLast());
534 // list of tracks
535 TObjArray *trlist=(TObjArray*)pdigit->TrackList();
536 trlist->Add(&trinfo);
537
538 } else {
539 pdigit=
e8189707 540 (AliITSTransientDigit*) fHitMap1->GetHit(index, it);
541 for(Int_t kk=0;kk<fScaleSize;kk++) {
542 cellcharge += fHitMap2->GetSignal(index,fScaleSize*it+kk);
543 }
b0f5e3fc 544 // update charge
e8189707 545 (*pdigit).fSignal=(Int_t)cellcharge;
b0f5e3fc 546 (*pdigit).fPhysics+=phys;
547 // update list of tracks
548 TObjArray* trlist=(TObjArray*)pdigit->TrackList();
549 Int_t lastentry=trlist->GetLast();
550 TVector *ptrkp=(TVector*)trlist->At(lastentry);
551 TVector &trinfo=*ptrkp;
552 Int_t lasttrack=Int_t(trinfo(0));
e8189707 553 Int_t lasthit=Int_t(trinfo(1));
554 Float_t lastcharge=(trinfo(2));
b0f5e3fc 555
556 if (lasttrack==idtrack ) {
557 lastcharge+=(Float_t)timeAmplitude;
558 trlist->RemoveAt(lastentry);
559 trinfo(0)=lasttrack;
e8189707 560 trinfo(1)=lasthit; // or idhit
561 trinfo(2)=lastcharge;
b0f5e3fc 562 trlist->AddAt(&trinfo,lastentry);
563 } else {
564
e8189707 565 new((*padr)[countadr++]) TVector(3);
b0f5e3fc 566 TVector &trinfo=*((TVector*) (*padr)[countadr-1]);
567 trinfo(0)=(Float_t)idtrack;
e8189707 568 trinfo(1)=(Float_t)idhit;
569 trinfo(2)=(Float_t)timeAmplitude;
b0f5e3fc 570
571 trlist->Add(&trinfo);
572 }
573
574#ifdef print
575 // check the track list - debugging
e8189707 576 Int_t trk[20], htrk[20];
577 Float_t chtrk[20];
b0f5e3fc 578 Int_t nptracks=trlist->GetEntriesFast();
579 if (nptracks > 2) {
580 Int_t tr;
e8189707 581 for (tr=0;tr<nptracks;tr++) {
b0f5e3fc 582 TVector *pptrkp=(TVector*)trlist->At(tr);
583 TVector &pptrk=*pptrkp;
584 trk[tr]=Int_t(pptrk(0));
e8189707 585 htrk[tr]=Int_t(pptrk(1));
586 chtrk[tr]=(pptrk(2));
b0f5e3fc 587 printf("nptracks %d \n",nptracks);
588 // set printings
589 }
590 } // end if nptracks
591#endif
592 } // end if pdigit
593
e8189707 594 arg[4]=counter;
595 arg[5]=countadr;
b0f5e3fc 596
597
598}
599
600
601//____________________________________________
602
603void AliITSsimulationSDD::AddDigit(Int_t i, Int_t j, Int_t signal){
604 // Adds a Digit.
605 // tag with -1 signals coming from background tracks
606 // tag with -2 signals coming from pure electronic noise
607
e8189707 608 Int_t digits[3], tracks[3], hits[3];
b0f5e3fc 609 Float_t phys, charges[3];
610
e8189707 611 Int_t trk[20], htrk[20];
b0f5e3fc 612 Float_t chtrk[20];
613
614 signal=Convert8to10(signal); // set a flag in case non-ZS are 10-bit
615 AliITSTransientDigit *obj = (AliITSTransientDigit*)fHitMap1->GetHit(i,j);
616 digits[0]=i;
617 digits[1]=j;
618 digits[2]=signal;
b0f5e3fc 619 if (!obj) {
620 phys=0;
621 Int_t k;
e8189707 622 for (k=0;k<3;k++) {
b0f5e3fc 623 tracks[k]=-2;
624 charges[k]=0;
e8189707 625 hits[k]=0;
b0f5e3fc 626 }
e8189707 627 fITS->AddSimDigit(1,phys,digits,tracks,hits,charges);
b0f5e3fc 628 } else {
629 phys=obj->fPhysics;
b0f5e3fc 630 TObjArray* trlist=(TObjArray*)obj->TrackList();
631 Int_t nptracks=trlist->GetEntriesFast();
632
633 if (nptracks > 20) {
634 cout<<"Attention - nptracks > 20 "<<nptracks<<endl;
635 nptracks=20;
636 }
637 Int_t tr;
e8189707 638 for (tr=0;tr<nptracks;tr++) {
b0f5e3fc 639 TVector &pp =*((TVector*)trlist->At(tr));
640 trk[tr]=Int_t(pp(0));
e8189707 641 htrk[tr]=Int_t(pp(1));
642 chtrk[tr]=(pp(2));
b0f5e3fc 643 }
644 if (nptracks > 1) {
e8189707 645 SortTracks(trk,chtrk,htrk,nptracks);
b0f5e3fc 646 }
647 Int_t i;
648 if (nptracks < 3 ) {
e8189707 649 for (i=0; i<nptracks; i++) {
b0f5e3fc 650 tracks[i]=trk[i];
651 charges[i]=chtrk[i];
e8189707 652 hits[i]=htrk[i];
b0f5e3fc 653 }
e8189707 654 for (i=nptracks; i<3; i++) {
b0f5e3fc 655 tracks[i]=0;
e8189707 656 hits[i]=0;
b0f5e3fc 657 charges[i]=0;
658 }
659 } else {
e8189707 660 for (i=0; i<3; i++) {
b0f5e3fc 661 tracks[i]=trk[i];
662 charges[i]=chtrk[i];
e8189707 663 hits[i]=htrk[i];
b0f5e3fc 664 }
665 }
666
e8189707 667 fITS->AddSimDigit(1,phys,digits,tracks,hits,charges);
b0f5e3fc 668
669 }
670
671}
672
673//____________________________________________
674
e8189707 675void AliITSsimulationSDD::SortTracks(Int_t *tracks,Float_t *charges,Int_t *hits,Int_t ntr){
b0f5e3fc 676 //
677 // Sort the list of tracks contributing to a given digit
678 // Only the 3 most significant tracks are acctually sorted
679 //
680
681 //
682 // Loop over signals, only 3 times
683 //
684
685
686 Float_t qmax;
687 Int_t jmax;
688 Int_t idx[3] = {-3,-3,-3};
689 Float_t jch[3] = {-3,-3,-3};
690 Int_t jtr[3] = {-3,-3,-3};
e8189707 691 Int_t jhit[3] = {-3,-3,-3};
b0f5e3fc 692 Int_t i,j,imax;
693
694 if (ntr<3) imax=ntr;
695 else imax=3;
696 for(i=0;i<imax;i++){
697 qmax=0;
698 jmax=0;
699
700 for(j=0;j<ntr;j++){
701
702 if((i == 1 && j == idx[i-1] )
703 ||(i == 2 && (j == idx[i-1] || j == idx[i-2]))) continue;
704
705 if(charges[j] > qmax) {
706 qmax = charges[j];
707 jmax=j;
708 }
709 }
710
711 if(qmax > 0) {
712 idx[i]=jmax;
713 jch[i]=charges[jmax];
714 jtr[i]=tracks[jmax];
e8189707 715 jhit[i]=hits[jmax];
b0f5e3fc 716 }
717
718 }
719
720 for(i=0;i<3;i++){
721 if (jtr[i] == -3) {
722 charges[i]=0;
e8189707 723 tracks[i]=-3;
724 hits[i]=-1;
b0f5e3fc 725 } else {
726 charges[i]=jch[i];
727 tracks[i]=jtr[i];
e8189707 728 hits[i]=jtr[i];
b0f5e3fc 729 }
730 }
731
732}
733//____________________________________________
734void AliITSsimulationSDD::ChargeToSignal() {
735 // add baseline, noise, electronics and ADC saturation effects
736
b0f5e3fc 737
738 Float_t maxadc = fResponse->MaxAdc();
e8189707 739 Float_t topValue = fResponse->MagicValue();
740 Float_t norm = maxadc/topValue;
b0f5e3fc 741
742
e8189707 743 char opt1[20], opt2[20];
b0f5e3fc 744 fResponse->ParamOptions(opt1,opt2);
745 char *read = strstr(opt1,"file");
746
747 Float_t baseline, noise;
748
749 if (read) {
750 static Bool_t readfile=kTRUE;
751 //read baseline and noise from file
752 if (readfile) ReadBaseline();
753 readfile=kFALSE;
754 } else fResponse->GetNoiseParam(noise,baseline);
755
756 Float_t contrib=0;
757 Bool_t first=kTRUE;
758
e8189707 759 TRandom *random = new TRandom();
760 Int_t i,k,kk;
761 for (i=0;i<=fNofMaps;i++) {
762 if (read && i<fNofMaps) GetAnodeBaseline(i,baseline,noise);
5d18fa90 763 if (!first) FastFourierTransform(fElectronics,&fInZR[0],&fInZI[0],1);
e8189707 764 for (k=0;k<fScaleSize*fMaxNofSamples;k++) {
b0f5e3fc 765 if (!first) {
e8189707 766 Float_t newcont = 0.;
767 Float_t maxcont = 0.;
768 Int_t it=(Int_t)(k/fScaleSize);
769 if (k%fScaleSize == 0) {
770 for(kk=0;kk<fScaleSize;kk++) {
771 newcont = fOutZR[fScaleSize*it+kk];
772 if(newcont > maxcont) maxcont = newcont;
773 }
774 newcont = maxcont;
775 // analog to digital ?
776 Double_t signal = newcont*norm;
777 if (signal >= maxadc) signal = maxadc -1;
778 // back to analog: ?
779 signal /=norm;
780 fHitMap2->SetHit(i-1,it,signal);
781 }
782 Double_t rw = fElectronics->GetTraFunReal(k);
783 Double_t iw = fElectronics->GetTraFunImag(k);
784 fOutZR[k] = fInZR[k]*rw - fInZI[k]*iw;
785 fOutZI[k] = fInZR[k]*iw + fInZI[k]*rw;
786 if(i+1 < fNofMaps) fInZR[k] = fHitMap2->GetSignal(i+1,k);
b0f5e3fc 787 }
e8189707 788
b0f5e3fc 789 if (first) {
e8189707 790 fInZR[k] = fHitMap2->GetSignal(i,k);
791 }
5d18fa90 792 fInZI[k] = 0.;
b0f5e3fc 793 // add baseline and noise
794 contrib = baseline + noise*random->Gaus();
5d18fa90 795 fInZR[k] += contrib;
e8189707 796
b0f5e3fc 797 } // loop over time
798
799 if (first) {
e8189707 800 FastFourierTransform(fElectronics,&fInZR[0],&fInZI[0],1);
801 for (k=0; k<fScaleSize*fMaxNofSamples; k++) {
802 Double_t rw = fElectronics->GetTraFunReal(k);
803 Double_t iw = fElectronics->GetTraFunImag(k);
804 fOutZR[k] = fInZR[k]*rw - fInZI[k]*iw;
805 fOutZI[k] = fInZR[k]*iw + fInZI[k]*rw;
806 fInZR[k] = fHitMap2->GetSignal(i+1,k);
807 fInZI[k] = 0.;
808 // add baseline and noise
809 contrib = baseline + noise*random->Gaus();
810 fInZR[k] += contrib;
811 }
b0f5e3fc 812 }
e8189707 813 if(i<fNofMaps) FastFourierTransform(fElectronics,&fOutZR[0],&fOutZI[0],-1);
b0f5e3fc 814 first = kFALSE;
815 } // loop over anodes
e8189707 816
b0f5e3fc 817}
818
819//____________________________________________
820void AliITSsimulationSDD::GetAnodeBaseline(Int_t i,Float_t &baseline,
821 Float_t &noise){
822 // Returns the Baseline for a particular anode.
823 baseline=fBaseline[i];
824 noise=fNoise[i];
825
826}
827
828//____________________________________________
829void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl,
830 Int_t &th){
831 // Returns the compression alogirthm parameters
832 Int_t size = fD.GetSize();
833 if (size > 2 ) {
834 db=fD[i]; tl=fT1[i]; th=fT2[i];
835 } else {
836 if (size <= 2 && i>=fNofMaps/2) {
837 db=fD[1]; tl=fT1[1]; th=fT2[1];
838 } else {
839 db=fD[0]; tl=fT1[0]; th=fT2[0];
840 }
841 }
842}
843//____________________________________________
844void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl){
845 // returns the compression alogirthm parameters
846 Int_t size = fD.GetSize();
847 if (size > 2 ) {
848 db=fD[i]; tl=fT1[i];
849 } else {
850 if (size <= 2 && i>=fNofMaps/2) {
851 db=fD[1]; tl=fT1[1];
852 } else {
853 db=fD[0]; tl=fT1[0];
854 }
855 }
856
857}
858//____________________________________________
859void AliITSsimulationSDD::SetCompressParam(){
860 // Sets the compression alogirthm parameters
861 Int_t cp[8],i;
862
863 fResponse->GiveCompressParam(cp);
e8189707 864 for (i=0; i<2; i++) {
b0f5e3fc 865 fD[i] =cp[i];
866 fT1[i] =cp[i+2];
867 fT2[i] =cp[i+4];
868 fTol[i]=cp[i+6];
b0f5e3fc 869 printf("\n i, fD, fT1, fT2, fTol %d %d %d %d %d\n",
870 i,fD[i],fT1[i],fT2[i],fTol[i]);
b0f5e3fc 871 }
872}
873
874//____________________________________________
875void AliITSsimulationSDD::ReadBaseline(){
876 // read baseline and noise from file - either a .root file and in this
877 // case data should be organised in a tree with one entry for each
878 // module => reading should be done accordingly
879 // or a classic file and do smth. like this:
880 //
881 // Read baselines and noise for SDD
882 //
883
884
885 Int_t na,pos;
886 Float_t bl,n;
e8189707 887 char input[100], base[100], param[100];
b0f5e3fc 888 char *filtmp;
889
e8189707 890 fResponse->Filenames(input,base,param);
b0f5e3fc 891 fFileName=base;
892//
893 filtmp = gSystem->ExpandPathName(fFileName.Data());
894 FILE *bline = fopen(filtmp,"r");
895 printf("filtmp %s\n",filtmp);
896 na = 0;
897
898 if(bline) {
899 while(fscanf(bline,"%d %f %f",&pos, &bl, &n) != EOF) {
b0f5e3fc 900 if (pos != na+1) {
901 Error("ReadBaseline","Anode number not in increasing order!",
902 filtmp);
903 exit(1);
904 }
905 fBaseline[na]=bl;
906 fNoise[na]=n;
907 na++;
908 }
909 } else {
910 Error("ReadBaseline"," THE BASELINE FILE %s DOES NOT EXIST !",
911 filtmp);
912 exit(1);
913 } // end if(bline)
914
915 fclose(bline);
916 delete [] filtmp;
b0f5e3fc 917}
918
919//____________________________________________
920Int_t AliITSsimulationSDD::Convert10to8(Int_t signal) {
921 // To the 10 to 8 bit lossive compression.
922 // code from Davide C. and Albert W.
923
924 if (signal < 128) return signal;
925 if (signal < 256) return (128+((signal-128)>>1));
926 if (signal < 512) return (192+((signal-256)>>3));
927 if (signal < 1024) return (224+((signal-512)>>4));
928 return 0;
929
930}
931
932//____________________________________________
933Int_t AliITSsimulationSDD::Convert8to10(Int_t signal) {
934 // Undo the lossive 10 to 8 bit compression.
935 // code from Davide C. and Albert W.
936 if (signal < 0 || signal > 255) {
937 printf("<Convert8to10> out of range %d \n",signal);
938 return 0;
939 }
940
941 if (signal < 128) return signal;
942 if (signal < 192) {
943 if (TMath::Odd(signal)) return (128+((signal-128)<<1));
944 else return (128+((signal-128)<<1)+1);
945 }
946 if (signal < 224) {
947 if (TMath::Odd(signal)) return (256+((signal-192)<<3)+3);
948 else return (256+((signal-192)<<3)+4);
949 }
950 if (TMath::Odd(signal)) return (512+((signal-224)<<4)+7);
951 else return (512+((signal-224)<<4)+7);
952 return 0;
953
954}
955
956//____________________________________________
957AliITSMap* AliITSsimulationSDD::HitMap(Int_t i){
958 //Return the correct map.
959 return ((i==0)? fHitMap1 : fHitMap2);
960}
961
962
963//____________________________________________
e8189707 964void AliITSsimulationSDD::ZeroSuppression(const char *option) {
b0f5e3fc 965 // perform the zero suppresion
966 if (strstr(option,"2D")) {
967 //Init2D(); // activate if param change module by module
968 Compress2D();
969 } else if (strstr(option,"1D")) {
970 //Init1D(); // activate if param change module by module
971 Compress1D();
972 } else StoreAllDigits();
973
974}
975
976//____________________________________________
977void AliITSsimulationSDD::Init2D(){
978 // read in and prepare arrays: fD, fT1, fT2
979 // savemu[nanodes], savesigma[nanodes]
980 // read baseline and noise from file - either a .root file and in this
981 // case data should be organised in a tree with one entry for each
982 // module => reading should be done accordingly
983 // or a classic file and do smth. like this ( code from Davide C. and
984 // Albert W.) :
985 //
986 // Read 2D zero-suppression parameters for SDD
987 //
988
989 if (!strstr(fParam,"file")) return;
990
991 Int_t na,pos,tempTh;
992 Float_t mu,sigma;
5d18fa90 993 Float_t *savemu = new Float_t [fNofMaps];
e8189707 994 Float_t *savesigma = new Float_t [fNofMaps];
995 char input[100],basel[100],par[100];
b0f5e3fc 996 char *filtmp;
997
998
999 Int_t minval = fResponse->MinVal();
1000
e8189707 1001 fResponse->Filenames(input,basel,par);
1002 fFileName=par;
b0f5e3fc 1003
1004//
1005 filtmp = gSystem->ExpandPathName(fFileName.Data());
1006 FILE *param = fopen(filtmp,"r");
1007 na = 0;
1008
1009 if(param) {
1010 while(fscanf(param,"%d %f %f",&pos, &mu, &sigma) != EOF) {
1011 if (pos != na+1) {
1012 Error("Init2D ","Anode number not in increasing order!",
1013 filtmp);
1014 exit(1);
1015 }
1016 savemu[na]=mu;
1017 savesigma[na]=sigma;
1018 if ((2.*sigma) < mu) {
1019 fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
1020 mu = 2.0 * sigma;
1021 } else fD[na] = 0;
1022 tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
1023 if (tempTh < 0) tempTh=0;
1024 fT1[na] = tempTh;
1025 tempTh = (Int_t)floor(mu+3.0*sigma+0.5) - minval;
1026 if (tempTh < 0) tempTh=0;
1027 fT2[na] = tempTh;
1028 na++;
1029 } // end while
1030
1031 } else {
1032 Error("Init2D "," THE FILE %s DOES NOT EXIST !",
1033 filtmp);
1034 exit(1);
1035 } // end if(param)
1036
1037 fclose(param);
1038 delete [] filtmp;
5d18fa90 1039 delete [] savemu;
e8189707 1040 delete [] savesigma;
b0f5e3fc 1041}
e8189707 1042
b0f5e3fc 1043//____________________________________________
1044void AliITSsimulationSDD::Compress2D(){
1045 //
1046 // simple ITS cluster finder -- online zero-suppression conditions
1047 //
1048 //
1049
b0f5e3fc 1050 Int_t db,tl,th;
1051 Int_t minval = fResponse->MinVal();
1052 Bool_t write=fResponse->OutputOption();
1053
1054 Int_t nz, nl, nh, low, i, j;
1055
e8189707 1056 for (i=0; i<fNofMaps; i++) {
b0f5e3fc 1057 CompressionParam(i,db,tl,th);
1058 nz=0;
1059 nl=0;
1060 nh=0;
1061 low=0;
e8189707 1062 for (j=0; j<fMaxNofSamples; j++) {
b0f5e3fc 1063 Int_t signal=(Int_t)(fHitMap2->GetSignal(i,j));
1064 signal -= db; // if baseline eq. is done here
1065 if (signal <= 0) {nz++; continue;}
1066 if ((signal - tl) < minval) low++;
1067 if ((signal - th) >= minval) {
1068 nh++;
1069 Bool_t cond=kTRUE;
b0f5e3fc 1070 FindCluster(i,j,signal,minval,cond);
1071 } else if ((signal - tl) >= minval) nl++;
1072 } // loop time samples
1073 if (write) TreeB()->Fill(nz,nl,nh,low,i+1);
b0f5e3fc 1074 } // loop anodes
1075
1076 char hname[30];
1077 if (write) {
1078 sprintf(hname,"TNtuple%d_%d",fModule,fEvent);
1079 TreeB()->Write(hname);
1080 // reset tree
1081 TreeB()->Reset();
1082 }
1083
1084}
1085
1086//_____________________________________________________________________________
1087void AliITSsimulationSDD::FindCluster(Int_t i,Int_t j,Int_t signal,
1088 Int_t minval,Bool_t cond){
1089//
1090// Find clusters according to the online 2D zero-suppression algorithm
1091//
1092
1093 Bool_t high=kFALSE;
1094
1095 fHitMap2->FlagHit(i,j);
1096//
1097// check the online zero-suppression conditions
1098//
e8189707 1099 const Int_t maxNeighbours = 4;
1100
b0f5e3fc 1101 Int_t nn;
1102 Int_t dbx,tlx,thx;
e8189707 1103 Int_t xList[maxNeighbours], yList[maxNeighbours];
1104 fSegmentation->Neighbours(i,j,&nn,xList,yList);
b0f5e3fc 1105 Int_t in,ix,iy;
e8189707 1106 for (in=0; in<nn; in++) {
1107 ix=xList[in];
1108 iy=yList[in];
b0f5e3fc 1109 if (fHitMap2->TestHit(ix,iy)==kUnused) {
1110 CompressionParam(ix,dbx,tlx,thx);
1111 Int_t qn = (Int_t)(fHitMap2->GetSignal(ix,iy));
1112 qn -= dbx; // if baseline eq. is done here
1113 if ((qn-tlx) < minval) {
1114 fHitMap2->FlagHit(ix,iy);
1115 continue;
1116 } else {
1117 if ((qn - thx) >= minval) high=kTRUE;
1118 if (cond) {
1119 signal = Convert10to8(signal);
b0f5e3fc 1120 AddDigit(i,j,signal);
1121 }
1122 Int_t qns = Convert10to8(qn);
b0f5e3fc 1123 if (!high) AddDigit(ix,iy,qns);
1124 cond=kFALSE;
1125 if(!high) fHitMap2->FlagHit(ix,iy);
1126 }
1127 } // TestHit
1128 } // loop over neighbours
1129
1130}
1131
1132//____________________________________________
1133void AliITSsimulationSDD::Init1D(){
1134 // this is just a copy-paste of input taken from 2D algo
1135 // Torino people should give input
1136 //
1137 // Read 1D zero-suppression parameters for SDD
1138 //
1139
1140 if (!strstr(fParam,"file")) return;
1141
1142 Int_t na,pos,tempTh;
1143 Float_t mu,sigma;
e8189707 1144 Float_t *savemu = new Float_t [fNofMaps];
1145 Float_t *savesigma = new Float_t [fNofMaps];
1146 char input[100],basel[100],par[100];
b0f5e3fc 1147 char *filtmp;
1148
1149
1150 Int_t minval = fResponse->MinVal();
e8189707 1151 fResponse->Filenames(input,basel,par);
1152 fFileName=par;
b0f5e3fc 1153
1154// set first the disable and tol param
1155 SetCompressParam();
1156//
1157 filtmp = gSystem->ExpandPathName(fFileName.Data());
1158 FILE *param = fopen(filtmp,"r");
1159 na = 0;
1160
1161 if (param) {
1162 fscanf(param,"%d %d %d %d ", &fT2[0], &fT2[1], &fTol[0], &fTol[1]);
1163 while(fscanf(param,"%d %f %f",&pos, &mu, &sigma) != EOF) {
1164 if (pos != na+1) {
1165 Error("Init1D ","Anode number not in increasing order!",
1166 filtmp);
1167 exit(1);
1168 }
1169 savemu[na]=mu;
1170 savesigma[na]=sigma;
1171 if ((2.*sigma) < mu) {
1172 fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
1173 mu = 2.0 * sigma;
1174 } else fD[na] = 0;
1175 tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
1176 if (tempTh < 0) tempTh=0;
1177 fT1[na] = tempTh;
1178 na++;
1179 } // end while
1180 } else {
1181 Error("Init1D "," THE FILE %s DOES NOT EXIST !",
1182 filtmp);
1183 exit(1);
1184 } // end if(param)
1185
1186 fclose(param);
1187 delete [] filtmp;
749bd21a 1188 delete [] savemu;
e8189707 1189 delete [] savesigma;
1190
1191
b0f5e3fc 1192
1193}
1194
1195//____________________________________________
1196void AliITSsimulationSDD::Compress1D(){
1197 // 1D zero-suppression algorithm (from Gianluca A.)
1198
1199 Int_t dis,tol,thres,decr,diff;
b0f5e3fc 1200
1201 UChar_t *str=fStream->Stream();
1202 Int_t counter=0;
1203
e8189707 1204 Int_t last=0;
1205 Int_t k,i,j;
1206 for (k=1; k<=2; k++) {
b0f5e3fc 1207 tol = Tolerance(k-1);
1208 dis = Disable(k-1);
e8189707 1209 for (i=0; i<fNofMaps/2; i++) {
b0f5e3fc 1210 Bool_t firstSignal=kTRUE;
1211 CompressionParam(k*i,decr,thres);
e8189707 1212 for (j=0; j<fMaxNofSamples; j++) {
b0f5e3fc 1213 Int_t signal=(Int_t)(fHitMap2->GetSignal(k*i,j));
1214 signal -= decr; // if baseline eq.
1215 signal = Convert10to8(signal);
1216 if (signal < thres) {
1217 signal=0;
1218 diff=128;
1219 last=0;
1220 // write diff in the buffer for HuffT
1221 str[counter]=(UChar_t)diff;
1222 counter++;
1223 continue;
1224 }
1225 diff=signal-last;
1226 if (diff > 127) diff=127;
1227 if (diff < -128) diff=-128;
1228
1229 if (signal < dis) {
1230 if (tol==1 && (diff >= -2 && diff <= 1)) diff=0;
1231 if (tol==2 && (diff >= -4 && diff <= 3)) diff=0;
1232 if (tol==3 && (diff >= -16 && diff <= 15)) diff=0;
1233 AddDigit(k*i,j,last+diff);
1234 } else {
1235 AddDigit(k*i,j,signal);
1236 }
1237
1238 diff += 128;
1239 // write diff in the buffer used to compute Huffman tables
1240 if (firstSignal) str[counter]=(UChar_t)signal;
1241 else str[counter]=(UChar_t)diff;
1242 counter++;
1243
1244 last=signal;
1245 firstSignal=kFALSE;
1246 } // loop time samples
1247 } // loop anodes one half of detector
1248 }
1249
1250 // check
1251 fStream->CheckCount(counter);
1252
1253 // open file and write out the stream of diff's
1254
1255 static Bool_t open=kTRUE;
e8189707 1256 static TFile *outFile;
b0f5e3fc 1257 Bool_t write = fResponse->OutputOption();
1258
1259 if (write ) {
1260 if(open) {
1261 SetFileName("stream.root");
1262 cout<<"filename "<<fFileName<<endl;
e8189707 1263 outFile=new TFile(fFileName,"recreate");
b0f5e3fc 1264 cout<<"I have opened "<<fFileName<<" file "<<endl;
1265 }
1266 open=kFALSE;
e8189707 1267 outFile->cd();
b0f5e3fc 1268 fStream->Write();
1269 } // endif write
1270
1271 fStream->ClearStream();
1272
1273 // back to galice.root file
1274
1275 TTree *fAli=gAlice->TreeK();
1276 TFile *file = 0;
1277
1278 if (fAli) file =fAli->GetCurrentFile();
1279 file->cd();
1280
1281
1282}
1283//____________________________________________
1284void AliITSsimulationSDD::StoreAllDigits(){
1285 // if non-zero-suppressed data
1286
e8189707 1287 Int_t i, j, digits[3];
b0f5e3fc 1288
e8189707 1289 for (i=0; i<fNofMaps; i++) {
1290 for (j=0; j<fMaxNofSamples; j++) {
b0f5e3fc 1291 Int_t signal=(Int_t)(fHitMap2->GetSignal(i,j));
1292 signal = Convert10to8(signal);
1293 signal = Convert8to10(signal); // ?
1294 digits[0]=i;
1295 digits[1]=j;
1296 digits[2]=signal;
1297 fITS->AddRealDigit(1,digits);
1298 }
1299 }
1300}
1301//____________________________________________
1302
1303void AliITSsimulationSDD::CreateHistograms(){
1304 // Creates histograms of maps for debugging
1305
1306 Int_t i;
e8189707 1307 for (i=0;i<fNofMaps;i++) {
b0f5e3fc 1308 TString *sddName = new TString("sdd_");
1309 Char_t candNum[4];
1310 sprintf(candNum,"%d",i+1);
1311 sddName->Append(candNum);
1312 (*fHis)[i] = new TH1F(sddName->Data(),"SDD maps",
4fdbbde6 1313 fMaxNofSamples,(Axis_t)0.,(Axis_t) fMaxNofSamples);
b0f5e3fc 1314 delete sddName;
1315 }
1316
1317}
1318//____________________________________________
1319
1320void AliITSsimulationSDD::ResetHistograms(){
1321 //
1322 // Reset histograms for this detector
1323 //
1324 Int_t i;
e8189707 1325 for (i=0;i<fNofMaps;i++ ) {
b0f5e3fc 1326 if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset();
1327 }
1328
1329}
1330
1331
1332//____________________________________________
1333
1334TH1F *AliITSsimulationSDD::GetAnode(Int_t wing, Int_t anode) {
1335 // Fills a histogram from a give anode.
1336 if (!fHis) return 0;
1337
1338 if(wing <=0 || wing > 2) {
1339 cout << "Wrong wing number: " << wing << endl;
1340 return NULL;
1341 }
1342 if(anode <=0 || anode > fNofMaps/2) {
1343 cout << "Wrong anode number: " << anode << endl;
1344 return NULL;
1345 }
1346
1347 Int_t index = (wing-1)*fNofMaps/2 + anode-1;
1348 return (TH1F*)((*fHis)[index]);
1349}
1350
1351//____________________________________________
1352
1353void AliITSsimulationSDD::WriteToFile(TFile *hfile) {
1354 // Writes the histograms to a file
1355 if (!fHis) return;
1356
1357 hfile->cd();
1358 Int_t i;
1359 for(i=0; i<fNofMaps; i++) (*fHis)[i]->Write(); //fAdcs[i]->Write();
1360 return;
1361}
1362//____________________________________________
1363Float_t AliITSsimulationSDD::GetNoise(Float_t threshold) {
1364 // Returns the noise value
1365 if (!fHis) return 0.;
1366
4fdbbde6 1367 TH1F *noisehist = new TH1F("noisehist","noise",100,(Axis_t)0.,(Axis_t)threshold);
b0f5e3fc 1368 Int_t i,k;
e8189707 1369 for (i=0;i<fNofMaps;i++) {
b0f5e3fc 1370 Int_t nOfBinsA = ((TH1F*)(*fHis)[i])->GetNbinsX();
e8189707 1371 for (k=0;k<nOfBinsA;k++) {
b0f5e3fc 1372 Float_t content = ((TH1F*)(*fHis)[i])->GetBinContent(k+1);
1373 if (content < threshold) noisehist->Fill(content);
1374 }
1375 }
4fdbbde6 1376 TF1 *gnoise = new TF1("gnoise","gaus",(Double_t)0.,(Double_t)threshold);
b0f5e3fc 1377 noisehist->Fit("gnoise","RQ");
1378 noisehist->Draw();
1379 Float_t mnoise = gnoise->GetParameter(1);
1380 cout << "mnoise : " << mnoise << endl;
1381 Float_t rnoise = gnoise->GetParameter(2);
1382 cout << "rnoise : " << rnoise << endl;
1383 delete noisehist;
1384 return rnoise;
1385}