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 **************************************************************************/
24 #include <TStopwatch.h>
36 #include "AliITShit.h"
37 #include "AliITSdigit.h"
38 #include "AliITSmodule.h"
39 #include "AliITSMapA1.h"
40 #include "AliITSMapA2.h"
41 #include "AliITSetfSDD.h"
42 #include "AliITSRawData.h"
43 #include "AliITSHuffman.h"
44 #include "AliITSsegmentation.h"
45 #include "AliITSresponse.h"
46 #include "AliITSsimulationSDD.h"
48 ClassImp(AliITSsimulationSDD)
49 ////////////////////////////////////////////////////////////////////////
51 // Written by Piergiorgio Cerello
54 // AliITSsimulationSDD is the simulation of SDDs.
58 <img src="picts/ITS/AliITShit_Class_Diagram.gif">
61 <font size=+2 color=red>
62 <p>This show the relasionships between the ITS hit class and the rest of Aliroot.
67 //_____________________________________________________________________________
69 Int_t power(Int_t b, Int_t e) {
70 // compute b to the e power, where both b and e are Int_ts.
72 for(i=0; i<e; i++) power *= b;
76 //_____________________________________________
78 void FastFourierTransform(AliITSetfSDD *alisddetf,Double_t *real,
79 Double_t *imag,Int_t direction) {
80 // Do a Fast Fourier Transform
81 //printf("FFT: direction %d\n",direction);
83 Int_t samples = alisddetf->GetSamples();
84 Int_t l = (Int_t) ((log((Float_t) samples)/log(2.))+0.5);
87 Int_t m2 = samples/m1;
90 for(j=0; j<samples; j += m1) {
92 for(k=j; k<= j+m-1; k++) {
93 Double_t wsr = alisddetf->GetWeightReal(p);
94 Double_t wsi = alisddetf->GetWeightImag(p);
95 if(direction == -1) wsi = -wsi;
96 Double_t xr = *(real+k+m);
97 Double_t xi = *(imag+k+m);
98 *(real+k+m) = wsr*(*(real+k)-xr) - wsi*(*(imag+k)-xi);
99 *(imag+k+m) = wsr*(*(imag+k)-xi) + wsi*(*(real+k)-xr);
110 for(j=0; j<samples; j++) {
114 for(i1=1; i1<=l; i1++) {
117 p = p + p + j2 - j1 - j1;
120 Double_t xr = *(real+j);
121 Double_t xi = *(imag+j);
122 *(real+j) = *(real+p);
123 *(imag+j) = *(imag+p);
128 if(direction == -1) {
129 for(i=0; i<samples; i++) {
130 *(real+i) /= samples;
131 *(imag+i) /= samples;
136 //_____________________________________________________________________________
138 AliITSsimulationSDD::AliITSsimulationSDD(){
139 // Default constructor
155 SetPerpendTracksFlag();
167 //_____________________________________________________________________________
168 AliITSsimulationSDD::AliITSsimulationSDD(AliITSsimulationSDD &source)
170 // Copy constructor to satify Coding roules only.
171 if(this==&source) return;
172 printf("Not allowed to make a copy of AliITSsimulationSDD "
173 "Using default creater instead\n");
174 AliITSsimulationSDD();
176 //_____________________________________________________________________________
177 AliITSsimulationSDD& AliITSsimulationSDD::operator=(AliITSsimulationSDD &source)
179 // Assignment operator to satify Coding roules only.
180 if(this==&source) return *this;
181 printf("Not allowed to make a = with AliITSsimulationSDD "
182 "Using default creater instead\n");
185 //_____________________________________________________________________________
187 AliITSsimulationSDD::AliITSsimulationSDD(AliITSsegmentation *seg,AliITSresponse *resp)
189 // Standard Constructor
196 SetPerpendTracksFlag();
200 fHitMap2 = new AliITSMapA2(fSegmentation,fScaleSize,1);
201 fHitMap1 = new AliITSMapA1(fSegmentation);
204 fNofMaps=fSegmentation->Npz();
205 fMaxNofSamples=fSegmentation->Npx();
207 Float_t sddLength = fSegmentation->Dx();
208 Float_t sddWidth = fSegmentation->Dz();
211 Float_t anodePitch = fSegmentation->Dpz(dummy);
212 Double_t timeStep = (Double_t)fSegmentation->Dpx(dummy);
213 Float_t driftSpeed=fResponse->DriftSpeed();
215 if(anodePitch*(fNofMaps/2) > sddWidth) {
216 Warning("AliITSsimulationSDD",
217 "Too many anodes %d or too big pitch %f \n",fNofMaps/2,anodePitch);
220 if(timeStep*fMaxNofSamples < sddLength/driftSpeed) {
221 Error("AliITSsimulationSDD",
222 "Time Interval > Allowed Time Interval: exit\n");
226 fElectronics = new AliITSetfSDD(timeStep/fScaleSize,fResponse->Electronics());
228 char opt1[20], opt2[20];
229 fResponse->ParamOptions(opt1,opt2);
231 char *same = strstr(opt1,"same");
236 fNoise.Set(fNofMaps);
237 fBaseline.Set(fNofMaps);
241 const char *kopt=fResponse->ZeroSuppOption();
242 if (strstr(fParam,"file") ) {
245 if (strstr(kopt,"2D")) {
248 Init2D(); // desactivate if param change module by module
249 } else if(strstr(kopt,"1D")) {
252 Init1D(); // desactivate if param change module by module
263 Bool_t write=fResponse->OutputOption();
264 if(write && strstr(kopt,"2D")) MakeTreeB();
266 // call here if baseline does not change by module
269 fITS = (AliITS*)gAlice->GetModule("ITS");
270 Int_t size=fNofMaps*fMaxNofSamples;
271 fStream = new AliITSInStream(size);
273 fInZR = new Double_t [fScaleSize*fMaxNofSamples];
274 fInZI = new Double_t [fScaleSize*fMaxNofSamples];
275 fOutZR = new Double_t [fScaleSize*fMaxNofSamples];
276 fOutZI = new Double_t [fScaleSize*fMaxNofSamples];
281 //_____________________________________________________________________________
283 AliITSsimulationSDD::~AliITSsimulationSDD() {
303 if(fTreeB) delete fTreeB;
304 if(fInZR) delete [] fInZR;
305 if(fInZI) delete [] fInZI;
306 if(fOutZR) delete [] fOutZR;
307 if(fOutZI) delete [] fOutZI;
309 //_____________________________________________________________________________
311 void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
312 // create maps to build the lists of tracks
314 cout << "Module: " << md << endl;
318 TObjArray *fHits = mod->GetHits();
319 Int_t nhits = fHits->GetEntriesFast();
320 if (!nhits && fCheckNoise) {
323 fHitMap2->ClearMap();
325 } else if (!nhits) return;
327 //printf("simSDD: module nhits %d %d\n",md,nhits);
330 TObjArray *list=new TObjArray;
331 static TClonesArray *padr=0;
332 if(!padr) padr=new TClonesArray("TVector",1000);
333 Int_t arg[6] = {0,0,0,0,0,0};
334 fHitMap1->SetArray(list);
336 // cout << "set Parameters" << endl;
338 Int_t nofAnodes=fNofMaps/2;
340 Float_t sddLength = fSegmentation->Dx();
341 Float_t sddWidth = fSegmentation->Dz();
344 Float_t anodePitch = fSegmentation->Dpz(dummy);
345 Float_t timeStep = fSegmentation->Dpx(dummy);
347 Float_t driftSpeed=fResponse->DriftSpeed();
349 Float_t maxadc = fResponse->MaxAdc();
350 Float_t topValue = fResponse->DynamicRange();
351 Float_t CHloss = fResponse->ChargeLoss();
352 Float_t norm = maxadc/topValue;
354 // Piergiorgio's part (apart for few variables which I made float
355 // when i thought that can be done
357 // Fill detector maps with GEANT hits
358 // loop over hits in the module
363 const Float_t kconv=1.0e+6; // GeV->KeV
366 for(ii=0; ii<nhits; ii++) {
367 // cout << "hit: " << ii+1 << " of " << nhits << endl;
368 AliITShit *hit = (AliITShit*) fHits->At(ii);
370 hit = (AliITShit*) fHits->At(ii);
371 hit->GetPositionL(xL[0],xL[1],xL[2]);
372 Int_t hitDetector = hit->GetDetector();
374 // Take into account all hits when several GEANT steps are carried out
375 // inside the silicon
376 // Get and use the status of hit(track):
377 // 66 - for entering hit,
378 // 65 - for inside hit,
379 // 68 - for exiting hit,
380 // 33 - for stopping hit.
382 Int_t status = hit->GetTrackStatus(); // Boris
384 if(hit->StatusEntering()) idhit=ii;
387 // Deposited energy in keV
388 Float_t depEnergy = kconv*hit->GetIonization();
391 if(fFlag && (depEnergy != 0.)) continue;
395 //Take now the entering and inside hits only
396 if(status != 66 && status != 65) continue; // Boris
398 if(depEnergy == 0.) {
400 hit1 = (AliITShit*) fHits->At(ii);
401 hit1->GetPositionL(xL1[0],xL1[1],xL1[2]);
408 Int_t status1 = hit1->GetTrackStatus(); // Boris
411 if(depEnergy == 0.) depEnergy = kconv*hit1->GetIonization();
413 if(depEnergy < 0.001) {
414 cout<<" Warning !: for the hit status ="<<status1<<" the depEnergy ="<<depEnergy<<endl;
418 // scale path to simulate a perpendicular track
419 // continue if the particle did not lose energy
420 // passing through detector
422 printf("This particle has passed without losing energy!\n");
425 Float_t pathInSDD = TMath::Sqrt((xL[0]-xL1[0])*(xL[0]-xL1[0])+(xL[1]-xL1[1])*(xL[1]-xL1[1])+(xL[2]-xL1[2])*(xL[2]-xL1[2]));
427 if (fFlag && pathInSDD) { depEnergy *= (0.03/pathInSDD); }
428 Float_t Drft = (xL1[0]+xL[0])*0.5;
429 Float_t drPath = 10000.*Drft;
430 if(drPath < 0) drPath = -drPath;
431 drPath = sddLength-drPath;
433 cout << "Warning: negative drift path " << drPath << endl;
438 Float_t drTime = drPath/driftSpeed;
441 fResponse->DiffCoeff(dfCoeff,s1);
443 // Squared Sigma along the anodes
444 Double_t sig2A = 2.*dfCoeff*drTime+s1*s1;
445 Double_t sigA = TMath::Sqrt(sig2A);
447 nOfSplits = (Int_t) (1 + 10000.*pathInSDD/sigA);
448 //cout << "nOfSplits: " << nOfSplits << ", sigA: " << sigA << ", path: " << pathInSDD << endl;
450 if(fFlag) nOfSplits = 1;
451 depEnergy /= nOfSplits;
453 for(Int_t kk=0;kk<nOfSplits;kk++) {
455 xL[0]+(xL1[0]-xL[0])*((kk+0.5)/((Float_t) nOfSplits));
457 xL[2]+(xL1[2]-xL[2])*((kk+0.5)/((Float_t) nOfSplits));
458 Float_t driftPath = 10000.*avDrft;
463 driftPath = -driftPath;
465 driftPath = sddLength-driftPath;
466 Int_t detector = 2*(hitDetector-1) + iWing;
468 cout << "Warning: negative drift path " << driftPath << endl;
473 Float_t driftTime = driftPath/driftSpeed;
474 Int_t timeSample = (Int_t) (fScaleSize*driftTime/timeStep + 1);
475 if(timeSample > fScaleSize*fMaxNofSamples) {
476 cout << "Warning: Wrong Time Sample: " << timeSample << endl;
481 Float_t xAnode = 10000.*(avAnode)/anodePitch + nofAnodes/2; // +1?
482 if(xAnode*anodePitch > sddWidth || xAnode*anodePitch < 0.)
483 { cout << "Warning: Z = " << xAnode*anodePitch << endl; }
484 Int_t iAnode = (Int_t) (1.+xAnode); // xAnode?
485 if(iAnode < 1 || iAnode > nofAnodes) {
486 cout << "Warning: Wrong iAnode: " << iAnode << endl;
490 // work with the idtrack=entry number in the TreeH for the moment
491 //Int_t idhit,idtrack;
492 //mod->GetHitTrackAndHitIndex(ii,idtrack,idhit);
493 //Int_t idtrack=mod->GetHitTrackIndex(ii);
494 // or store straight away the particle position in the array
495 // of particles and take idhit=ii only when part is entering (this
496 // requires FillModules() in the macro for analysis) :
497 Int_t itrack = hit->GetTrack();
500 Float_t diffCoeff, s0;
501 fResponse->DiffCoeff(diffCoeff,s0);
503 // Squared Sigma along the anodes
504 Double_t sigma2A = 2.*diffCoeff*driftTime+s0*s0;
505 Double_t sigmaA = TMath::Sqrt(sigma2A);
506 Double_t sigmaT = sigmaA/driftSpeed;
507 // Peak amplitude in nanoAmpere
508 Double_t eVpairs = 3.6;
509 Double_t amplitude = fScaleSize*160.*depEnergy/(timeStep*eVpairs*2.*acos(-1.)*sigmaT*sigmaA);
510 amplitude *= timeStep/25.; // WARNING!!!!! Amplitude scaling to account for clock variations (reference value: 40 MHz)
511 Double_t chargeloss = 1.-CHloss*driftPath/1000;
512 amplitude *= chargeloss;
513 Float_t nsigma=fResponse->NSigmaIntegration();
514 Int_t nlookups = fResponse->GausNLookUp();
515 Float_t width = 2.*nsigma/(nlookups-1);
519 Int_t jt = timeSample;
522 if(driftTime > 1200.) {
527 Int_t nsplit = 4; // hard-wired
528 nsplit = (nsplit+1)/2*2;
530 Double_t aStep = anodePitch/(nsplit*fScaleSize);
531 Double_t tStep = timeStep/(nsplit*fScaleSize);
532 // Define SDD window corresponding to the hit
533 Int_t anodeWindow = (Int_t) (fScaleSize*nsigma*sigmaA/anodePitch + 1);
534 Int_t timeWindow = (Int_t) (fScaleSize*nsigma*sigmaT/timeStep + 1);
535 Int_t jamin = (ja - anodeWindow/ndiv - 1)*fScaleSize*nsplit + 1;
536 Int_t jamax = (ja + anodeWindow/ndiv)*fScaleSize*nsplit;
537 if(jamin <= 0) jamin = 1;
538 if(jamax > fScaleSize*nofAnodes*nsplit) jamax = fScaleSize*nofAnodes*nsplit;
539 Int_t jtmin = (Int_t) (jt - timeWindow*nmul - 1)*nsplit + 1; //hard-wired
540 Int_t jtmax = (Int_t) (jt + timeWindow*nmul)*nsplit; //hard-wired
541 if(jtmin <= 0) jtmin = 1;
542 if(jtmax > fScaleSize*fMaxNofSamples*nsplit) jtmax = fScaleSize*fMaxNofSamples*nsplit;
544 // Spread the charge in the anode-time window
546 //cout << "jamin: " << jamin << ", jamax: " << jamax << endl;
547 //cout << "jtmin: " << jtmin << ", jtmax: " << jtmax << endl;
548 for(ka=jamin; ka <=jamax; ka++) {
549 Int_t ia = (ka-1)/(fScaleSize*nsplit) + 1;
550 if(ia <= 0) { cout << "Warning: ia < 1: " << endl; continue; }
551 if(ia > nofAnodes) ia = nofAnodes;
552 Double_t aExpo = (aStep*(ka-0.5)-xAnode*anodePitch)/sigmaA;
553 Double_t anodeAmplitude = 0;
554 if(TMath::Abs(aExpo) > nsigma) {
556 //cout << "aExpo: " << aExpo << endl;
558 Int_t i = (Int_t) ((aExpo+nsigma)/width);
559 //cout << "eval ampl: " << i << ", " << amplitude << endl;
560 anodeAmplitude = amplitude*fResponse->GausLookUp(i);
561 //cout << "ampl: " << anodeAmplitude << endl;
563 Int_t index = ((detector+1)%2)*nofAnodes+ia-1; // index starts from 0
565 //Double_t rlTime = log(tStep*anodeAmplitude);
567 for(kt=jtmin; kt<=jtmax; kt++) {
568 Int_t it = (kt-1)/nsplit+1; // it starts from 1
569 if(it<=0) { cout << "Warning: it < 1: " << endl; continue; }
570 if(it>fScaleSize*fMaxNofSamples) it = fScaleSize*fMaxNofSamples;
571 Double_t tExpo = (tStep*(kt-0.5)-driftTime)/sigmaT;
572 Double_t timeAmplitude = 0.;
573 if(TMath::Abs(tExpo) > nsigma) {
575 //cout << "tExpo: " << tExpo << endl;
577 Int_t i = (Int_t) ((tExpo+nsigma)/width);
578 //cout << "eval ampl: " << i << ", " << anodeAmplitude << endl;
579 timeAmplitude = anodeAmplitude*fResponse->GausLookUp(i);
582 // build the list of digits for this module
587 timeAmplitude *= norm;
589 ListOfFiredCells(arg,timeAmplitude,list,padr);
590 //cout << "ampl: " << timeAmplitude << endl;
591 } // loop over time in window
592 } // end if anodeAmplitude
593 } // loop over anodes in window
594 } // end loop over "sub-hits"
595 } // end loop over hits
597 // timer.Stop(); timer.Print();
599 // introduce the electronics effects and do zero-suppression if required
600 Int_t nentries=list->GetEntriesFast();
603 // TStopwatch timer1;
605 // timer1.Stop(); cout << "ele: "; timer1.Print();
607 const char *kopt=fResponse->ZeroSuppOption();
608 ZeroSuppression(kopt);
617 fHitMap1->ClearMap();
618 fHitMap2->ClearMap();
620 //gObjectTable->Print();
624 //____________________________________________
626 void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
627 TObjArray *list,TClonesArray *padr){
628 // Returns the list of "fired" cells.
632 Int_t idtrack=arg[2];
634 Int_t counter=arg[4];
635 Int_t countadr=arg[5];
637 Double_t charge=timeAmplitude;
638 charge += fHitMap2->GetSignal(index,ik-1);
639 fHitMap2->SetHit(index, ik-1, charge);
642 Int_t it=(Int_t)((ik-1)/fScaleSize);
646 digits[2]=(Int_t)timeAmplitude;
648 if (idtrack >= 0) phys=(Float_t)timeAmplitude;
651 Double_t cellcharge=0.;
652 AliITSTransientDigit* pdigit;
653 // build the list of fired cells and update the info
654 if (!fHitMap1->TestHit(index, it)) {
656 new((*padr)[countadr++]) TVector(3);
657 TVector &trinfo=*((TVector*) (*padr)[countadr-1]);
658 trinfo(0)=(Float_t)idtrack;
659 trinfo(1)=(Float_t)idhit;
660 trinfo(2)=(Float_t)timeAmplitude;
662 list->AddAtAndExpand(
663 new AliITSTransientDigit(phys,digits),counter);
665 fHitMap1->SetHit(index, it, counter);
667 pdigit=(AliITSTransientDigit*)list->
670 TObjArray *trlist=(TObjArray*)pdigit->TrackList();
671 trlist->Add(&trinfo);
675 (AliITSTransientDigit*) fHitMap1->GetHit(index, it);
676 for(Int_t kk=0;kk<fScaleSize;kk++) {
677 cellcharge += fHitMap2->GetSignal(index,fScaleSize*it+kk);
680 (*pdigit).fSignal=(Int_t)cellcharge;
681 (*pdigit).fPhysics+=phys;
682 // update list of tracks
683 TObjArray* trlist=(TObjArray*)pdigit->TrackList();
684 Int_t lastentry=trlist->GetLast();
685 TVector *ptrkp=(TVector*)trlist->At(lastentry);
686 TVector &trinfo=*ptrkp;
687 Int_t lasttrack=Int_t(trinfo(0));
688 //Int_t lasthit=Int_t(trinfo(1));
689 Float_t lastcharge=(trinfo(2));
691 if (lasttrack==idtrack ) {
692 lastcharge+=(Float_t)timeAmplitude;
693 trlist->RemoveAt(lastentry);
695 //trinfo(1)=lasthit; // or idhit
697 trinfo(2)=lastcharge;
698 trlist->AddAt(&trinfo,lastentry);
701 new((*padr)[countadr++]) TVector(3);
702 TVector &trinfo=*((TVector*) (*padr)[countadr-1]);
703 trinfo(0)=(Float_t)idtrack;
704 trinfo(1)=(Float_t)idhit;
705 trinfo(2)=(Float_t)timeAmplitude;
707 trlist->Add(&trinfo);
711 // check the track list - debugging
712 Int_t trk[20], htrk[20];
714 Int_t nptracks=trlist->GetEntriesFast();
717 for (tr=0;tr<nptracks;tr++) {
718 TVector *pptrkp=(TVector*)trlist->At(tr);
719 TVector &pptrk=*pptrkp;
720 trk[tr]=Int_t(pptrk(0));
721 htrk[tr]=Int_t(pptrk(1));
722 chtrk[tr]=(pptrk(2));
723 printf("nptracks %d \n",nptracks);
737 //____________________________________________
739 void AliITSsimulationSDD::AddDigit(Int_t i, Int_t j, Int_t signal){
741 // tag with -1 signals coming from background tracks
742 // tag with -2 signals coming from pure electronic noise
744 Int_t digits[3], tracks[3], hits[3];
745 Float_t phys, charges[3];
747 Int_t trk[20], htrk[20];
750 Bool_t do10to8=fResponse->Do10to8();
752 if(do10to8) signal=Convert8to10(signal);
753 AliITSTransientDigit *obj = (AliITSTransientDigit*)fHitMap1->GetHit(i,j);
765 fITS->AddSimDigit(1,phys,digits,tracks,hits,charges);
768 TObjArray* trlist=(TObjArray*)obj->TrackList();
769 Int_t nptracks=trlist->GetEntriesFast();
772 cout<<"Attention - nptracks > 20 "<<nptracks<<endl;
776 for (tr=0;tr<nptracks;tr++) {
777 TVector &pp =*((TVector*)trlist->At(tr));
778 trk[tr]=Int_t(pp(0));
779 htrk[tr]=Int_t(pp(1));
783 //printf("nptracks > 2 -- %d\n",nptracks);
784 SortTracks(trk,chtrk,htrk,nptracks);
788 for (i=0; i<nptracks; i++) {
793 for (i=nptracks; i<3; i++) {
799 for (i=0; i<3; i++) {
806 fITS->AddSimDigit(1,phys,digits,tracks,hits,charges);
812 //____________________________________________
814 void AliITSsimulationSDD::SortTracks(Int_t *tracks,Float_t *charges,Int_t *hits,Int_t ntr){
816 // Sort the list of tracks contributing to a given digit
817 // Only the 3 most significant tracks are acctually sorted
821 // Loop over signals, only 3 times
827 Int_t idx[3] = {-3,-3,-3};
828 Float_t jch[3] = {-3,-3,-3};
829 Int_t jtr[3] = {-3,-3,-3};
830 Int_t jhit[3] = {-3,-3,-3};
841 if((i == 1 && j == idx[i-1] )
842 ||(i == 2 && (j == idx[i-1] || j == idx[i-2]))) continue;
844 if(charges[j] > qmax) {
852 jch[i]=charges[jmax];
872 //____________________________________________
873 void AliITSsimulationSDD::ChargeToSignal() {
874 // add baseline, noise, electronics and ADC saturation effects
876 char opt1[20], opt2[20];
877 fResponse->ParamOptions(opt1,opt2);
878 char *read = strstr(opt1,"file");
880 Float_t baseline, noise;
883 static Bool_t readfile=kTRUE;
884 //read baseline and noise from file
885 if (readfile) ReadBaseline();
887 } else fResponse->GetNoiseParam(noise,baseline);
894 Float_t maxadc = fResponse->MaxAdc();
896 for (i=0;i<fNofMaps;i++) {
897 if (read && i<fNofMaps) GetAnodeBaseline(i,baseline,noise);
898 for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
899 fInZR[k] = fHitMap2->GetSignal(i,k);
900 contrib = (baseline + noise*random.Gaus());
903 for(k=0; k<fMaxNofSamples; k++) {
904 Double_t newcont = 0.;
905 Double_t maxcont = 0.;
906 for(kk=0;kk<fScaleSize;kk++) {
908 newcont = fInZR[fScaleSize*k+kk];
909 if(newcont > maxcont) maxcont = newcont;
911 //newcont += (fInZR[fScaleSize*k+kk]/fScaleSize);
914 if (newcont >= maxadc) newcont = maxadc -1;
915 if(newcont >= baseline) cout << "newcont: " << newcont << endl;
917 fHitMap2->SetHit(i,k,newcont);
919 } // loop over anodes
923 for (i=0;i<fNofMaps;i++) {
924 if (read && i<fNofMaps) GetAnodeBaseline(i,baseline,noise);
925 for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
926 fInZR[k] = fHitMap2->GetSignal(i,k);
927 contrib = (baseline + noise*random.Gaus());
931 FastFourierTransform(fElectronics,&fInZR[0],&fInZI[0],1);
932 for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
933 Double_t rw = fElectronics->GetTraFunReal(k);
934 Double_t iw = fElectronics->GetTraFunImag(k);
935 fOutZR[k] = fInZR[k]*rw - fInZI[k]*iw;
936 fOutZI[k] = fInZR[k]*iw + fInZI[k]*rw;
938 FastFourierTransform(fElectronics,&fOutZR[0],&fOutZI[0],-1);
939 for(k=0; k<fMaxNofSamples; k++) {
940 Double_t newcont1 = 0.;
941 Double_t maxcont1 = 0.;
942 for(kk=0;kk<fScaleSize;kk++) {
944 newcont1 = fOutZR[fScaleSize*k+kk];
945 if(newcont1 > maxcont1) maxcont1 = newcont1;
947 //newcont1 += (fInZR[fScaleSize*k+kk]/fScaleSize);
950 //cout << "newcont1: " << newcont1 << endl;
951 if (newcont1 >= maxadc) newcont1 = maxadc -1;
952 fHitMap2->SetHit(i,k,newcont1);
954 } // loop over anodes
959 //____________________________________________
960 void AliITSsimulationSDD::GetAnodeBaseline(Int_t i,Float_t &baseline,
962 // Returns the Baseline for a particular anode.
963 baseline=fBaseline[i];
968 //____________________________________________
969 void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl,
971 // Returns the compression alogirthm parameters
972 Int_t size = fD.GetSize();
974 db=fD[i]; tl=fT1[i]; th=fT2[i];
976 if (size <= 2 && i>=fNofMaps/2) {
977 db=fD[1]; tl=fT1[1]; th=fT2[1];
979 db=fD[0]; tl=fT1[0]; th=fT2[0];
983 //____________________________________________
984 void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl){
985 // returns the compression alogirthm parameters
986 Int_t size = fD.GetSize();
990 if (size <= 2 && i>=fNofMaps/2) {
998 //____________________________________________
999 void AliITSsimulationSDD::SetCompressParam(){
1000 // Sets the compression alogirthm parameters
1003 fResponse->GiveCompressParam(cp);
1004 for (i=0; i<2; i++) {
1009 printf("\n i, fD, fT1, fT2, fTol %d %d %d %d %d\n",
1010 i,fD[i],fT1[i],fT2[i],fTol[i]);
1014 //____________________________________________
1015 void AliITSsimulationSDD::ReadBaseline(){
1016 // read baseline and noise from file - either a .root file and in this
1017 // case data should be organised in a tree with one entry for each
1018 // module => reading should be done accordingly
1019 // or a classic file and do smth. like this:
1021 // Read baselines and noise for SDD
1027 char input[100], base[100], param[100];
1030 fResponse->Filenames(input,base,param);
1033 filtmp = gSystem->ExpandPathName(fFileName.Data());
1034 FILE *bline = fopen(filtmp,"r");
1035 printf("filtmp %s\n",filtmp);
1039 while(fscanf(bline,"%d %f %f",&pos, &bl, &n) != EOF) {
1041 Error("ReadBaseline","Anode number not in increasing order!",
1050 Error("ReadBaseline"," THE BASELINE FILE %s DOES NOT EXIST !",
1059 //____________________________________________
1060 Int_t AliITSsimulationSDD::Convert10to8(Int_t signal) {
1061 // To the 10 to 8 bit lossive compression.
1062 // code from Davide C. and Albert W.
1064 if (signal < 128) return signal;
1065 if (signal < 256) return (128+((signal-128)>>1));
1066 if (signal < 512) return (192+((signal-256)>>3));
1067 if (signal < 1024) return (224+((signal-512)>>4));
1072 //____________________________________________
1073 Int_t AliITSsimulationSDD::Convert8to10(Int_t signal) {
1074 // Undo the lossive 10 to 8 bit compression.
1075 // code from Davide C. and Albert W.
1076 if (signal < 0 || signal > 255) {
1077 printf("<Convert8to10> out of range %d \n",signal);
1081 if (signal < 128) return signal;
1083 if (TMath::Odd(signal)) return (128+((signal-128)<<1));
1084 else return (128+((signal-128)<<1)+1);
1087 if (TMath::Odd(signal)) return (256+((signal-192)<<3)+3);
1088 else return (256+((signal-192)<<3)+4);
1090 if (TMath::Odd(signal)) return (512+((signal-224)<<4)+7);
1091 else return (512+((signal-224)<<4)+7);
1096 //____________________________________________
1097 AliITSMap* AliITSsimulationSDD::HitMap(Int_t i){
1098 //Return the correct map.
1099 return ((i==0)? fHitMap1 : fHitMap2);
1103 //____________________________________________
1104 void AliITSsimulationSDD::ZeroSuppression(const char *option) {
1105 // perform the zero suppresion
1106 if (strstr(option,"2D")) {
1107 //Init2D(); // activate if param change module by module
1109 } else if (strstr(option,"1D")) {
1110 //Init1D(); // activate if param change module by module
1112 } else StoreAllDigits();
1116 //____________________________________________
1117 void AliITSsimulationSDD::Init2D(){
1118 // read in and prepare arrays: fD, fT1, fT2
1119 // savemu[nanodes], savesigma[nanodes]
1120 // read baseline and noise from file - either a .root file and in this
1121 // case data should be organised in a tree with one entry for each
1122 // module => reading should be done accordingly
1123 // or a classic file and do smth. like this ( code from Davide C. and
1126 // Read 2D zero-suppression parameters for SDD
1129 if (!strstr(fParam,"file")) return;
1131 Int_t na,pos,tempTh;
1133 Float_t *savemu = new Float_t [fNofMaps];
1134 Float_t *savesigma = new Float_t [fNofMaps];
1135 char input[100],basel[100],par[100];
1139 Int_t minval = fResponse->MinVal();
1141 fResponse->Filenames(input,basel,par);
1145 filtmp = gSystem->ExpandPathName(fFileName.Data());
1146 FILE *param = fopen(filtmp,"r");
1150 while(fscanf(param,"%d %f %f",&pos, &mu, &sigma) != EOF) {
1152 Error("Init2D ","Anode number not in increasing order!",
1157 savesigma[na]=sigma;
1158 if ((2.*sigma) < mu) {
1159 fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
1162 tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
1163 if (tempTh < 0) tempTh=0;
1165 tempTh = (Int_t)floor(mu+3.0*sigma+0.5) - minval;
1166 if (tempTh < 0) tempTh=0;
1172 Error("Init2D "," THE FILE %s DOES NOT EXIST !",
1180 delete [] savesigma;
1183 //____________________________________________
1184 void AliITSsimulationSDD::Compress2D(){
1186 // simple ITS cluster finder -- online zero-suppression conditions
1191 Int_t minval = fResponse->MinVal();
1192 Bool_t write=fResponse->OutputOption();
1193 Bool_t do10to8=fResponse->Do10to8();
1195 Int_t nz, nl, nh, low, i, j;
1197 for (i=0; i<fNofMaps; i++) {
1198 CompressionParam(i,db,tl,th);
1203 for (j=0; j<fMaxNofSamples; j++) {
1204 Int_t signal=(Int_t)(fHitMap2->GetSignal(i,j));
1205 signal -= db; // if baseline eq. is done here
1206 if (signal <= 0) {nz++; continue;}
1207 if ((signal - tl) < minval) low++;
1208 if ((signal - th) >= minval) {
1211 FindCluster(i,j,signal,minval,cond);
1212 if (cond && j && ((TMath::Abs(fHitMap2->GetSignal(i,j-1))-th)>=minval)) {
1213 if(do10to8) signal = Convert10to8(signal);
1214 AddDigit(i,j,signal);
1216 } else if ((signal - tl) >= minval) nl++;
1217 } // loop time samples
1218 if (write) TreeB()->Fill(nz,nl,nh,low,i+1);
1223 sprintf(hname,"TNtuple%d_%d",fModule,fEvent);
1224 TreeB()->Write(hname);
1231 //_____________________________________________________________________________
1232 void AliITSsimulationSDD::FindCluster(Int_t i,Int_t j,Int_t signal,
1233 Int_t minval,Bool_t &cond){
1235 // Find clusters according to the online 2D zero-suppression algorithm
1238 Bool_t do10to8=fResponse->Do10to8();
1242 fHitMap2->FlagHit(i,j);
1244 // check the online zero-suppression conditions
1246 const Int_t maxNeighbours = 4;
1250 Int_t xList[maxNeighbours], yList[maxNeighbours];
1251 fSegmentation->Neighbours(i,j,&nn,xList,yList);
1253 for (in=0; in<nn; in++) {
1256 if (fHitMap2->TestHit(ix,iy)==kUnused) {
1257 CompressionParam(ix,dbx,tlx,thx);
1258 Int_t qn = (Int_t)(fHitMap2->GetSignal(ix,iy));
1259 qn -= dbx; // if baseline eq. is done here
1260 if ((qn-tlx) < minval) {
1261 fHitMap2->FlagHit(ix,iy);
1264 if ((qn - thx) >= minval) high=kTRUE;
1266 if(do10to8) signal = Convert10to8(signal);
1267 AddDigit(i,j,signal);
1269 if(do10to8) qns = Convert10to8(qn);
1271 if (!high) AddDigit(ix,iy,qns);
1273 if(!high) fHitMap2->FlagHit(ix,iy);
1276 } // loop over neighbours
1280 //____________________________________________
1281 void AliITSsimulationSDD::Init1D(){
1282 // this is just a copy-paste of input taken from 2D algo
1283 // Torino people should give input
1285 // Read 1D zero-suppression parameters for SDD
1288 if (!strstr(fParam,"file")) return;
1290 Int_t na,pos,tempTh;
1292 Float_t *savemu = new Float_t [fNofMaps];
1293 Float_t *savesigma = new Float_t [fNofMaps];
1294 char input[100],basel[100],par[100];
1298 Int_t minval = fResponse->MinVal();
1299 fResponse->Filenames(input,basel,par);
1302 // set first the disable and tol param
1305 filtmp = gSystem->ExpandPathName(fFileName.Data());
1306 FILE *param = fopen(filtmp,"r");
1310 fscanf(param,"%d %d %d %d ", &fT2[0], &fT2[1], &fTol[0], &fTol[1]);
1311 while(fscanf(param,"%d %f %f",&pos, &mu, &sigma) != EOF) {
1313 Error("Init1D ","Anode number not in increasing order!",
1318 savesigma[na]=sigma;
1319 if ((2.*sigma) < mu) {
1320 fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
1323 tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
1324 if (tempTh < 0) tempTh=0;
1329 Error("Init1D "," THE FILE %s DOES NOT EXIST !",
1337 delete [] savesigma;
1343 //____________________________________________
1344 void AliITSsimulationSDD::Compress1D(){
1345 // 1D zero-suppression algorithm (from Gianluca A.)
1347 Int_t dis,tol,thres,decr,diff;
1349 UChar_t *str=fStream->Stream();
1352 Bool_t do10to8=fResponse->Do10to8();
1356 for (k=0; k<2; k++) {
1359 for (i=0; i<fNofMaps/2; i++) {
1360 Bool_t firstSignal=kTRUE;
1361 Int_t idx=i+k*fNofMaps/2;
1362 CompressionParam(idx,decr,thres);
1363 for (j=0; j<fMaxNofSamples; j++) {
1364 Int_t signal=(Int_t)(fHitMap2->GetSignal(idx,j));
1365 signal -= decr; // if baseline eq.
1366 if(do10to8) signal = Convert10to8(signal);
1367 if (signal <= thres) {
1371 // write diff in the buffer for HuffT
1372 str[counter]=(UChar_t)diff;
1377 if (diff > 127) diff=127;
1378 if (diff < -128) diff=-128;
1381 // tol has changed to 8 possible cases ? - one can write
1382 // this if(TMath::Abs(diff)<tol) ... else ...
1383 if(TMath::Abs(diff)<tol) diff=0;
1384 // or keep it as it was before
1386 if (tol==1 && (diff >= -2 && diff <= 1)) diff=0;
1387 if (tol==2 && (diff >= -4 && diff <= 3)) diff=0;
1388 if (tol==3 && (diff >= -16 && diff <= 15)) diff=0;
1390 AddDigit(idx,j,last+diff);
1392 AddDigit(idx,j,signal);
1396 // write diff in the buffer used to compute Huffman tables
1397 if (firstSignal) str[counter]=(UChar_t)signal;
1398 else str[counter]=(UChar_t)diff;
1403 } // loop time samples
1404 } // loop anodes one half of detector
1408 fStream->CheckCount(counter);
1410 // open file and write out the stream of diff's
1412 static Bool_t open=kTRUE;
1413 static TFile *outFile;
1414 Bool_t write = fResponse->OutputOption();
1418 SetFileName("stream.root");
1419 cout<<"filename "<<fFileName<<endl;
1420 outFile=new TFile(fFileName,"recreate");
1421 cout<<"I have opened "<<fFileName<<" file "<<endl;
1428 fStream->ClearStream();
1430 // back to galice.root file
1432 TTree *fAli=gAlice->TreeK();
1435 if (fAli) file =fAli->GetCurrentFile();
1440 //____________________________________________
1441 void AliITSsimulationSDD::StoreAllDigits(){
1442 // if non-zero-suppressed data
1444 Bool_t do10to8=fResponse->Do10to8();
1446 Int_t i, j, digits[3];
1447 for (i=0; i<fNofMaps; i++) {
1448 for (j=0; j<fMaxNofSamples; j++) {
1449 Int_t signal=(Int_t)(fHitMap2->GetSignal(i,j));
1450 if(do10to8) signal = Convert10to8(signal);
1451 if(do10to8) signal = Convert8to10(signal);
1455 fITS->AddRealDigit(1,digits);
1459 //____________________________________________
1461 void AliITSsimulationSDD::CreateHistograms(Int_t scale){
1462 // Creates histograms of maps for debugging
1466 fHis=new TObjArray(fNofMaps);
1467 for (i=0;i<fNofMaps;i++) {
1468 TString sddName("sdd_");
1470 sprintf(candNum,"%d",i+1);
1471 sddName.Append(candNum);
1472 (*fHis)[i] = new TH1F(sddName.Data(),"SDD maps",
1473 scale*fMaxNofSamples,0.,(Float_t) scale*fMaxNofSamples);
1477 //____________________________________________
1478 void AliITSsimulationSDD::FillHistograms(){
1479 // fill 1D histograms from map
1482 for( Int_t i=0; i<fNofMaps; i++) {
1483 TH1F *hist =(TH1F *)fHis->UncheckedAt(i);
1484 Int_t nsamples = hist->GetNbinsX();
1485 for( Int_t j=0; j<nsamples; j++) {
1486 Double_t signal=fHitMap2->GetSignal(i,j);
1487 hist->Fill((Float_t)j,signal);
1492 //____________________________________________
1494 void AliITSsimulationSDD::ResetHistograms(){
1496 // Reset histograms for this detector
1499 for (i=0;i<fNofMaps;i++ ) {
1500 if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset();
1506 //____________________________________________
1508 TH1F *AliITSsimulationSDD::GetAnode(Int_t wing, Int_t anode) {
1509 // Fills a histogram from a give anode.
1510 if (!fHis) return 0;
1512 if(wing <=0 || wing > 2) {
1513 cout << "Wrong wing number: " << wing << endl;
1516 if(anode <=0 || anode > fNofMaps/2) {
1517 cout << "Wrong anode number: " << anode << endl;
1521 Int_t index = (wing-1)*fNofMaps/2 + anode-1;
1522 return (TH1F*)((*fHis)[index]);
1525 //____________________________________________
1527 void AliITSsimulationSDD::WriteToFile(TFile *hfile) {
1528 // Writes the histograms to a file
1533 for(i=0; i<fNofMaps; i++) (*fHis)[i]->Write(); //fAdcs[i]->Write();
1536 //____________________________________________
1537 Float_t AliITSsimulationSDD::GetNoise() {
1538 // Returns the noise value
1540 //Bool_t do10to8=fResponse->Do10to8();
1541 //noise will always be in the liniar part of the signal
1544 Int_t threshold=fT1[0];
1546 char opt1[20], opt2[20];
1547 fResponse->ParamOptions(opt1,opt2);
1549 char *same = strstr(opt1,"same");
1550 Float_t noise,baseline;
1552 fResponse->GetNoiseParam(noise,baseline);
1554 static Bool_t readfile=kTRUE;
1555 //read baseline and noise from file
1556 if (readfile) ReadBaseline();
1560 TCanvas *c2 = (TCanvas*)gROOT->GetListOfCanvases()->FindObject("c2");
1561 if(c2) delete c2->GetPrimitive("noisehist");
1562 if(c2) delete c2->GetPrimitive("anode");
1563 else c2=new TCanvas("c2");
1565 c2->SetFillColor(0);
1567 TH1F *noisehist = new TH1F("noisehist","noise",100,0.,(float)2*threshold);
1568 TH1F *anode = new TH1F("anode","Anode Projection",fMaxNofSamples,0.,(float)fMaxNofSamples);
1570 for (i=0;i<fNofMaps;i++) {
1571 CompressionParam(i,decr,threshold);
1572 if (!same) GetAnodeBaseline(i,baseline,noise);
1574 for (k=0;k<fMaxNofSamples;k++) {
1575 Float_t signal=(Float_t)fHitMap2->GetSignal(i,k);
1576 //if (signal <= (float)threshold) noisehist->Fill(signal-baseline);
1577 if (signal <= (float)threshold) noisehist->Fill(signal);
1578 anode->Fill((float)k,signal);
1583 TF1 *gnoise = new TF1("gnoise","gaus",0.,threshold);
1584 noisehist->Fit("gnoise","RQ");
1587 Float_t mnoise = gnoise->GetParameter(1);
1588 cout << "mnoise : " << mnoise << endl;
1589 Float_t rnoise = gnoise->GetParameter(2);
1590 cout << "rnoise : " << rnoise << endl;
1595 //____________________________________________
1597 void AliITSsimulationSDD::Print() {
1599 // Print SDD simulation Parameters
1601 cout << "**************************************************" << endl;
1602 cout << " Silicon Drift Detector Simulation Parameters " << endl;
1603 cout << "**************************************************" << endl;
1604 cout << "Flag for Perpendicular tracks: " << (Int_t) fFlag << endl;
1605 cout << "Flag for noise checking: " << (Int_t) fCheckNoise << endl;
1606 cout << "Flag to switch off electronics: " << (Int_t) fDoFFT << endl;
1607 cout << "Number pf Anodes used: " << fNofMaps << endl;
1608 cout << "Number of Time Samples: " << fMaxNofSamples << endl;
1609 cout << "Scale size factor: " << fScaleSize << endl;
1610 cout << "**************************************************" << endl;