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 **************************************************************************/
18 #include <Riostream.h>
30 #include "AliITSMapA2.h"
31 #include "AliITSRawData.h"
32 #include "AliITSdigitSPD.h"
33 #include "AliITSetfSDD.h"
34 #include "AliITSmodule.h"
35 #include "AliITShit.h"
36 #include "AliITSpList.h"
37 #include "AliITSCalibrationSDD.h"
38 #include "AliITSsegmentationSDD.h"
39 #include "AliITSsimulationSDD.h"
43 ClassImp(AliITSsimulationSDD)
44 ////////////////////////////////////////////////////////////////////////
46 // Written by Piergiorgio Cerello //
47 // November 23 1999 //
49 // AliITSsimulationSDD is the simulation of SDDs. //
50 ////////////////////////////////////////////////////////////////////////
52 //______________________________________________________________________
53 AliITSsimulationSDD::AliITSsimulationSDD():
67 fCrosstalkFlag(kFALSE),
72 // Default constructor
74 SetPerpendTracksFlag();
78 //______________________________________________________________________
79 AliITSsimulationSDD::AliITSsimulationSDD(const AliITSsimulationSDD &source) :
80 AliITSsimulation(source),
82 fHitMap2(source.fHitMap2),
83 fHitSigMap2(source.fHitSigMap2),
84 fHitNoiMap2(source.fHitNoiMap2),
85 fElectronics(source.fElectronics),
88 fOutZR(source.fOutZR),
89 fOutZI(source.fOutZI),
90 fAnodeFire(source.fAnodeFire),
93 fCrosstalkFlag(source.fCrosstalkFlag),
94 fDoFFT(source.fDoFFT),
95 fNofMaps(source.fNofMaps),
96 fMaxNofSamples(source.fMaxNofSamples),
97 fScaleSize(source.fScaleSize){
98 // Copy constructor to satify Coding roules only.
101 //______________________________________________________________________
102 AliITSsimulationSDD& AliITSsimulationSDD::operator=(const AliITSsimulationSDD &src){
103 // Assignment operator to satify Coding roules only.
105 if(this==&src) return *this;
106 Error("AliITSsimulationSDD","Not allowed to make a = with "
107 "AliITSsimulationSDD Using default creater instead");
111 //______________________________________________________________________
112 AliITSsimulation& AliITSsimulationSDD::operator=(const AliITSsimulation &src){
113 // Assignment operator to satify Coding roules only.
115 if(this==&src) return *this;
116 Error("AliITSsimulationSSD","Not allowed to make a = with "
117 "AliITSsimulationSDD Using default creater instead");
121 //______________________________________________________________________
122 AliITSsimulationSDD::AliITSsimulationSDD(AliITSDetTypeSim* dettyp):
123 AliITSsimulation(dettyp),
136 fCrosstalkFlag(kFALSE),
141 // Default Constructor
144 //______________________________________________________________________
145 void AliITSsimulationSDD::Init(){
146 // Standard Constructor
149 SetPerpendTracksFlag();
153 AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
154 if(seg->Npx()==128) fScaleSize=8;
155 AliITSSimuParam* simpar = fDetType->GetSimuParam();
156 fpList = new AliITSpList( seg->Npz(),
157 fScaleSize*seg->Npx() );
158 fHitSigMap2 = new AliITSMapA2(seg,fScaleSize,1);
159 fHitNoiMap2 = new AliITSMapA2(seg,fScaleSize,1);
160 fHitMap2 = fHitSigMap2;
162 fNofMaps = seg->Npz();
163 fMaxNofSamples = seg->Npx();
164 fAnodeFire = new Bool_t [fNofMaps];
166 Float_t sddWidth = seg->Dz();
167 Float_t anodePitch = seg->Dpz(0);
168 Double_t timeStep = (Double_t)seg->Dpx(0);
170 if(anodePitch*(fNofMaps/2) > sddWidth) {
171 Warning("AliITSsimulationSDD",
172 "Too many anodes %d or too big pitch %f \n",
173 fNofMaps/2,anodePitch);
177 fElectronics = new AliITSetfSDD(timeStep/fScaleSize,
178 simpar->GetSDDElectronics());
181 fITS = (AliITS*)gAlice->GetModule("ITS");
183 fInZR = new Double_t [fScaleSize*fMaxNofSamples];
184 fInZI = new Double_t [fScaleSize*fMaxNofSamples];
185 fOutZR = new Double_t [fScaleSize*fMaxNofSamples];
186 fOutZI = new Double_t [fScaleSize*fMaxNofSamples];
188 //______________________________________________________________________
189 AliITSsimulationSDD::~AliITSsimulationSDD() {
203 if(fInZR) delete [] fInZR;
204 if(fInZI) delete [] fInZI;
205 if(fOutZR) delete [] fOutZR;
206 if(fOutZI) delete [] fOutZI;
207 if(fAnodeFire) delete [] fAnodeFire;
209 //______________________________________________________________________
210 void AliITSsimulationSDD::InitSimulationModule( Int_t module, Int_t event ) {
211 // create maps to build the lists of tracks for each summable digit
215 memset(fAnodeFire,0,sizeof(Bool_t)*fNofMaps);
217 //______________________________________________________________________
218 void AliITSsimulationSDD::ClearMaps() {
221 fHitSigMap2->ClearMap();
222 fHitNoiMap2->ClearMap();
224 //______________________________________________________________________
225 void AliITSsimulationSDD::FastFourierTransform(Double_t *real,
226 Double_t *imag,Int_t direction) {
227 // Do a Fast Fourier Transform
229 Int_t samples = fElectronics->GetSamples();
230 Int_t l = (Int_t) ((log((Float_t) samples)/log(2.))+0.5);
233 Int_t m2 = samples/m1;
235 for(i=1; i<=l; i++) {
236 for(j=0; j<samples; j += m1) {
238 for(k=j; k<= j+m-1; k++) {
239 Double_t wsr = fElectronics->GetWeightReal(p);
240 Double_t wsi = fElectronics->GetWeightImag(p);
241 if(direction == -1) wsi = -wsi;
242 Double_t xr = *(real+k+m);
243 Double_t xi = *(imag+k+m);
244 *(real+k+m) = wsr*(*(real+k)-xr) - wsi*(*(imag+k)-xi);
245 *(imag+k+m) = wsr*(*(imag+k)-xi) + wsi*(*(real+k)-xr);
255 for(j=0; j<samples; j++) {
259 for(i1=1; i1<=l; i1++) {
262 p = p + p + j2 - j1 - j1;
265 Double_t xr = *(real+j);
266 Double_t xi = *(imag+j);
267 *(real+j) = *(real+p);
268 *(imag+j) = *(imag+p);
273 if(direction == -1) {
274 for(i=0; i<samples; i++) {
275 *(real+i) /= samples;
276 *(imag+i) /= samples;
278 } // end if direction == -1
282 //______________________________________________________________________
283 void AliITSsimulationSDD::SDigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
284 // digitize module using the "slow" detector simulator creating
287 TObjArray *fHits = mod->GetHits();
288 Int_t nhits = fHits->GetEntriesFast();
291 InitSimulationModule( md, ev );
292 HitsToAnalogDigits( mod ); // fills fHitMap2 which is = fHitSigmap2
293 ChargeToSignal( fModule,kFALSE,kTRUE ); // - Process signal adding gain without adding noise
294 fHitMap2 = fHitNoiMap2; // - Swap to noise map
295 ChargeToSignal( fModule,kTRUE,kFALSE ); // - Process only noise
296 fHitMap2 = fHitSigMap2; // - Return to signal map
300 //______________________________________________________________________
301 Bool_t AliITSsimulationSDD::AddSDigitsToModule(TClonesArray *pItemArray,
303 // Add Summable digits to module maps.
304 AliITSSimuParam* simpar = fDetType->GetSimuParam();
305 Int_t nItems = pItemArray->GetEntries();
306 Double_t maxadc = simpar->GetSDDMaxAdc();
309 // cout << "Adding "<< nItems <<" SDigits to module " << fModule << endl;
310 for( Int_t i=0; i<nItems; i++ ) {
311 AliITSpListItem * pItem = (AliITSpListItem *)(pItemArray->At( i ));
312 if( pItem->GetModule() != fModule ) {
313 Error( "AliITSsimulationSDD","Error reading, SDigits module "
314 "%d != current module %d: exit",
315 pItem->GetModule(), fModule );
319 if(pItem->GetSignal()>0.0 ) sig = kTRUE;
321 fpList->AddItemTo( mask, pItem ); // Add SignalAfterElect + noise
322 AliITSpListItem * pItem2 = fpList->GetpListItem( pItem->GetIndex() );
323 Double_t sigAE = pItem2->GetSignalAfterElect();
324 if( sigAE >= maxadc ) sigAE = maxadc-1; // avoid overflow signal
327 fpList->GetMapIndex( pItem->GetIndex(), ia, it );
328 fHitMap2->SetHit( ia, it, sigAE );
329 fAnodeFire[ia] = kTRUE;
333 //______________________________________________________________________
334 void AliITSsimulationSDD::FinishSDigitiseModule() {
335 // digitize module using the "slow" detector simulator from
336 // the sum of summable digits.
340 //______________________________________________________________________
341 void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
342 // create maps to build the lists of tracks for each digit
344 TObjArray *fHits = mod->GetHits();
345 Int_t nhits = fHits->GetEntriesFast();
347 InitSimulationModule( md, ev );
350 HitsToAnalogDigits( mod );
351 ChargeToSignal( fModule,kTRUE,kTRUE ); // process signal + noise
353 for( Int_t i=0; i<fNofMaps; i++ ) {
354 for( Int_t j=0; j<fMaxNofSamples; j++ ) {
355 Int_t jdx = j*fScaleSize;
356 Int_t index = fpList->GetHitIndex( i, j );
357 AliITSpListItem pItemTmp2( fModule, index, 0. );
358 // put the fScaleSize analog digits in only one
359 for( Int_t ik=0; ik<fScaleSize; ik++ ) {
360 AliITSpListItem *pItemTmp = fpList->GetpListItem( i, jdx+ik );
361 if( pItemTmp == 0 ) continue;
362 pItemTmp2.Add( pItemTmp );
364 fpList->DeleteHit( i, j );
365 fpList->AddItemTo( 0, &pItemTmp2 );
371 //______________________________________________________________________
372 void AliITSsimulationSDD::FinishDigits() {
373 // introduce the electronics effects and do zero-suppression if required
375 if( fCrosstalkFlag ) ApplyCrosstalk(fModule);
377 AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
378 Bool_t isZeroSupp = res->GetZeroSupp();
379 if (isZeroSupp) Compress2D();
380 else StoreAllDigits();
382 //______________________________________________________________________
383 void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
384 // create maps to build the lists of tracks for each digit
385 AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
386 AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
387 AliITSSimuParam* simpar = fDetType->GetSimuParam();
388 TObjArray *hits = mod->GetHits();
389 Int_t nhits = hits->GetEntriesFast();
391 // Int_t arg[6] = {0,0,0,0,0,0};
392 Int_t nofAnodes = fNofMaps/2;
393 Double_t sddLength = seg->Dx();
394 Double_t sddWidth = seg->Dz();
395 Double_t anodePitch = seg->Dpz(0);
396 Double_t timeStep = seg->Dpx(0);
397 Double_t driftSpeed ; // drift velocity (anode dependent)
398 Double_t nanoampToADC = simpar->GetSDDMaxAdc()/simpar->GetSDDDynamicRange(); // maxadc/topValue;
399 Double_t cHloss = simpar->GetSDDChargeLoss();
401 simpar->GetSDDDiffCoeff(dfCoeff,s1); // Signal 2d Shape
402 Double_t eVpairs = simpar->GetGeVToCharge()*1.0E9; // 3.6 eV by def.
403 Double_t nsigma = simpar->GetNSigmaIntegration(); //
404 Int_t nlookups = simpar->GetGausNLookUp(); //
405 Float_t jitter = simpar->GetSDDJitterError(); //
407 // Piergiorgio's part (apart for few variables which I made float
408 // when i thought that can be done
409 // Fill detector maps with GEANT hits
410 // loop over hits in the module
412 const Float_t kconv = 1.0e+6; // GeV->KeV
414 Int_t iWing; // which detector wing/side.
415 Int_t ii,kk,ka,kt; // loop indexs
416 Int_t ia,it,index; // sub-pixel integration indexies
417 Int_t iAnode; // anode number.
418 Int_t timeSample; // time buckett.
419 Int_t anodeWindow; // anode direction charge integration width
420 Int_t timeWindow; // time direction charge integration width
421 Int_t jamin,jamax; // anode charge integration window
422 Int_t jtmin,jtmax; // time charge integration window
423 Int_t nsplitAn; // the number of splits in anode and time windows
424 Int_t nsplitTb; // the number of splits in anode and time windows
425 Int_t nOfSplits; // number of times track length is split into
426 Float_t nOfSplitsF; // Floating point version of nOfSplits.
427 Float_t kkF; // Floating point version of loop index kk.
428 Double_t pathInSDD; // Track length in SDD.
429 Double_t drPath; // average position of track in detector. in microns
430 Double_t drTime; // Drift time
431 Double_t avDrft; // x position of path length segment in cm.
432 Double_t avAnode; // Anode for path length segment in Anode number (float)
433 Double_t zAnode; // Floating point anode number.
434 Double_t driftPath; // avDrft in microns.
435 Double_t width; // width of signal at anodes.
436 Double_t depEnergy; // Energy deposited in this GEANT step.
437 Double_t xL[3],dxL[3]; // local hit coordinates and diff.
438 Double_t sigA; // sigma of signal at anode.
439 Double_t sigT; // sigma in time/drift direction for track segment
440 Double_t aStep,aConst; // sub-pixel size and offset anode
441 Double_t tStep,tConst; // sub-pixel size and offset time
442 Double_t amplitude; // signal amplitude for track segment in nanoAmpere
443 Double_t chargeloss; // charge loss for track segment.
444 Double_t anodeAmplitude; // signal amplitude in anode direction
445 Double_t aExpo; // exponent of Gaussian anode direction
446 Double_t timeAmplitude; // signal amplitude in time direction
447 Double_t tExpo; // exponent of Gaussian time direction
448 Double_t tof; // Time of flight in ns of this step.
450 for(ii=0; ii<nhits; ii++) {
451 if(!mod->LineSegmentL(ii,xL[0],dxL[0],xL[1],dxL[1],xL[2],dxL[2],
452 depEnergy,itrack)) continue;
454 if(xloc>0) iWing=0; // left side, carlos channel 0
455 else iWing=1; // right side
457 Float_t zloc=xL[2]+0.5*dxL[2];
458 zAnode=seg->GetAnodeFromLocal(xloc,zloc); // anode number in the range 0.-511.
459 driftSpeed = res->GetDriftSpeedAtAnode(zAnode);
460 if(timeStep*fMaxNofSamples < sddLength/driftSpeed) {
461 AliWarning("Time Interval > Allowed Time Interval\n");
466 Form("fTrack = %d hit=%d module=%d This particle has passed without losing energy!",
467 itrack,ii,mod->GetIndex()));
469 // continue if the particle did not lose energy
470 // passing through detector
471 } // end if !depEnergy
474 AliITShit* h=(AliITShit*)hits->At(ii);
475 if(h) tof=h->GetTOF()*1E9;
476 AliDebug(1,Form("TOF for hit %d on mod %d (particle %d)=%g\n",ii,fModule,h->Track(),tof));
478 xL[0] += 0.0001*gRandom->Gaus( 0, jitter ); //
479 pathInSDD = TMath::Sqrt(dxL[0]*dxL[0]+dxL[1]*dxL[1]+dxL[2]*dxL[2]);
481 if (fFlag && pathInSDD) { depEnergy *= (0.03/pathInSDD); }
482 drPath = TMath::Abs(10000.*(dxL[0]+2.*xL[0])*0.5);
483 drPath = sddLength-drPath;
485 AliDebug(1, // this should be fixed at geometry level
486 Form("negative drift path drPath=%e sddLength=%e dxL[0]=%e xL[0]=%e",
487 drPath,sddLength,dxL[0],xL[0]));
489 } // end if drPath < 0
491 // Compute number of segments to brake step path into
492 drTime = drPath/driftSpeed; // Drift Time
493 sigA = TMath::Sqrt(2.*dfCoeff*drTime+s1*s1);// Sigma along the anodes
494 // calcuate the number of time the path length should be split into.
495 nOfSplits = (Int_t) (1. + 10000.*pathInSDD/sigA);
496 if(fFlag) nOfSplits = 1;
498 // loop over path segments, init. some variables.
499 depEnergy /= nOfSplits;
500 nOfSplitsF = (Float_t) nOfSplits;
501 Float_t theAverage=0.,theSteps=0.;
502 for(kk=0;kk<nOfSplits;kk++) { // loop over path segments
503 kkF = (Float_t) kk + 0.5;
504 avDrft = xL[0]+dxL[0]*kkF/nOfSplitsF;
505 avAnode = xL[2]+dxL[2]*kkF/nOfSplitsF;
508 zAnode = seg->GetAnodeFromLocal(avDrft,avAnode);
509 driftSpeed = res->GetDriftSpeedAtAnode(zAnode);
510 driftPath = TMath::Abs(10000.*avDrft);
511 driftPath = sddLength-driftPath;
513 AliDebug(1, // this should be fixed at geometry level
514 Form("negative drift path driftPath=%e sddLength=%e avDrft=%e dxL[0]=%e xL[0]=%e",
515 driftPath,sddLength,avDrft,dxL[0],xL[0]));
517 } // end if driftPath < 0
518 drTime = driftPath/driftSpeed; // drift time for segment.
519 // Sigma along the anodes for track segment.
520 sigA = TMath::Sqrt(2.*dfCoeff*drTime+s1*s1);
521 sigT = sigA/driftSpeed;
523 drTime+=tof; // take into account Time Of Flight from production point
524 timeSample = (Int_t) (fScaleSize*drTime/timeStep + 1); // time bin in range 1-256 !!!
525 if(timeSample > fScaleSize*fMaxNofSamples) {
526 AliWarning(Form("Wrong Time Sample: %e",timeSample));
528 } // end if timeSample > fScaleSize*fMaxNofSamples
529 if(zAnode>nofAnodes) zAnode-=nofAnodes; // to have the anode number between 0. and 256.
530 if(zAnode*anodePitch > sddWidth || zAnode*anodePitch < 0.)
531 AliWarning(Form("Exceeding sddWidth=%e Z = %e",sddWidth,zAnode*anodePitch));
532 iAnode = (Int_t) (1.+zAnode); // iAnode in range 1-256 !!!!
533 if(iAnode < 1 || iAnode > nofAnodes) {
534 AliWarning(Form("Wrong iAnode: 1<%d>%d (xanode=%e)",iAnode,nofAnodes, zAnode));
536 } // end if iAnode < 1 || iAnode > nofAnodes
538 // store straight away the particle position in the array
539 // of particles and take idhit=ii only when part is entering (this
540 // requires FillModules() in the macro for analysis) :
542 // Peak amplitude in nanoAmpere
543 amplitude = fScaleSize*160.*depEnergy/
544 (timeStep*eVpairs*2.*acos(-1.));
545 chargeloss = 1.-cHloss*driftPath/1000.;
546 amplitude *= chargeloss;
547 width = 2.*nsigma/(nlookups-1);
551 aStep = anodePitch/(nsplitAn*sigA);
552 aConst = zAnode*anodePitch/sigA;
553 tStep = timeStep/(nsplitTb*fScaleSize*sigT);
554 tConst = drTime/sigT;
555 // Define SDD window corresponding to the hit
556 anodeWindow = (Int_t)(nsigma*sigA/anodePitch+1);
557 timeWindow = (Int_t) (fScaleSize*nsigma*sigT/timeStep+1.);
558 jamin = (iAnode - anodeWindow - 2)*nsplitAn+1;
559 jamax = (iAnode + anodeWindow + 2)*nsplitAn;
560 if(jamin <= 0) jamin = 1;
561 if(jamax > nofAnodes*nsplitAn)
562 jamax = nofAnodes*nsplitAn;
563 // jtmin and jtmax are Hard-wired
564 jtmin = (Int_t)(timeSample-timeWindow-2)*nsplitTb+1;
565 jtmax = (Int_t)(timeSample+timeWindow+2)*nsplitTb;
566 if(jtmin <= 0) jtmin = 1;
567 if(jtmax > fScaleSize*fMaxNofSamples*nsplitTb)
568 jtmax = fScaleSize*fMaxNofSamples*nsplitTb;
569 // Spread the charge in the anode-time window
570 for(ka=jamin; ka <=jamax; ka++) {
571 ia = (ka-1)/nsplitAn + 1;
573 if(ia > nofAnodes) ia = nofAnodes;
574 aExpo = (aStep*(ka-0.5)-aConst);
575 if(TMath::Abs(aExpo) > nsigma) anodeAmplitude = 0.;
577 Int_t theBin = (Int_t) ((aExpo+nsigma)/width+0.5);
578 anodeAmplitude = amplitude*simpar->GetGausLookUp(theBin);
580 // index starts from 0
581 index = iWing*nofAnodes+ia-1;
583 for(kt=jtmin; kt<=jtmax; kt++) {
584 it = (kt-1)/nsplitTb+1; // it starts from 1
586 if(it>fScaleSize*fMaxNofSamples)
587 it = fScaleSize*fMaxNofSamples;
588 tExpo = (tStep*(kt-0.5)-tConst);
589 if(TMath::Abs(tExpo) > nsigma) timeAmplitude = 0.;
591 Int_t theBin = (Int_t) ((tExpo+nsigma)/width+0.5);
592 timeAmplitude = anodeAmplitude*simpar->GetGausLookUp(theBin)*aStep*tStep;
594 timeAmplitude *= nanoampToADC;
595 // ListOfFiredCells(arg,timeAmplitude,alst,padr);
596 Double_t charge = timeAmplitude;
597 charge += fHitMap2->GetSignal(index,it-1);
598 fHitMap2->SetHit(index, it-1, charge);
599 fpList->AddSignal(index,it-1,itrack,ii-1,
600 mod->GetIndex(),timeAmplitude);
601 fAnodeFire[index] = kTRUE;
602 } // end loop over time in window
603 } // end if anodeAmplitude
604 } // loop over anodes in window
605 } // end loop over "sub-hits"
606 } // end loop over hits
609 //____________________________________________
610 void AliITSsimulationSDD::AddDigit( Int_t i, Int_t j, Int_t signalc, Int_t signale) {
612 Int_t size = AliITSdigit::GetNTracks();
615 Int_t * tracks = new Int_t[size];
616 Int_t * hits = new Int_t[size];
618 Float_t * charges = new Float_t[size];
624 AliITSpListItem *pItem = fpList->GetpListItem( i, j );
627 for( Int_t l=0; l<size; l++ ) {
633 Int_t idtrack = pItem->GetTrack( 0 );
634 if( idtrack >= 0 ) phys = pItem->GetSignal();
637 for( Int_t l=0; l<size; l++ ) if(l<pItem->GetMaxKept()) {
638 tracks[l] = pItem->GetTrack( l );
639 hits[l] = pItem->GetHit( l );
640 charges[l] = pItem->GetSignal( l );
648 fITS->AddSimDigit( 1, phys, digits, tracks, hits, charges, signale );
653 //______________________________________________________________________
654 void AliITSsimulationSDD::ChargeToSignal(Int_t mod,Bool_t bAddNoise, Bool_t bAddGain) {
655 // add baseline, noise, gain, electronics and ADC saturation effects
656 // apply dead channels
658 AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(mod);
664 AliITSSimuParam* simpar = fDetType->GetSimuParam();
665 Float_t maxadc = simpar->GetSDDMaxAdc();
666 Int_t nGroup=fScaleSize;
667 if(res->IsAMAt20MHz()){
671 for (i=0;i<fNofMaps;i++) {
672 if( !fAnodeFire[i] ) continue;
673 baseline = res->GetBaseline(i);
674 noise = res->GetNoise(i);
675 gain = res->GetChannelGain(i);
676 if(res->IsBad()) gain=0.;
677 if( res->IsChipBad(res->GetChip(i)) )gain=0.;
678 for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
679 fInZR[k] = fHitMap2->GetSignal(i,k);
680 if(bAddGain) fInZR[k]*=gain;
682 contrib = (baseline + noise*gRandom->Gaus());
688 for(k=0; k<fMaxNofSamples; k++) {
689 Double_t newcont = 0.;
690 Double_t maxcont = 0.;
691 for(kk=0;kk<fScaleSize;kk++) {
692 newcont = fInZR[fScaleSize*k+kk];
693 if(newcont > maxcont) maxcont = newcont;
696 if (newcont >= maxadc) newcont = maxadc -1;
697 if(newcont >= baseline){
698 Warning("","newcont=%d>=baseline=%d",newcont,baseline);
701 fHitMap2->SetHit(i,k,newcont);
704 FastFourierTransform(&fInZR[0],&fInZI[0],1);
705 for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
706 Double_t rw = fElectronics->GetTraFunReal(k);
707 Double_t iw = fElectronics->GetTraFunImag(k);
708 fOutZR[k] = fInZR[k]*rw - fInZI[k]*iw;
709 fOutZI[k] = fInZR[k]*iw + fInZI[k]*rw;
711 FastFourierTransform(&fOutZR[0],&fOutZI[0],-1);
712 for(k=0; k<fMaxNofSamples; k++) {
713 Double_t newcont1 = 0.;
714 Double_t maxcont1 = 0.;
715 for(kk=0;kk<nGroup;kk++) {
716 newcont1 = fOutZR[fScaleSize*k+kk];
717 if(newcont1 > maxcont1) maxcont1 = newcont1;
720 if (newcont1 >= maxadc) newcont1 = maxadc -1;
721 fHitMap2->SetHit(i,k,newcont1);
724 } // end for i loop over anodes
728 //______________________________________________________________________
729 void AliITSsimulationSDD::ApplyCrosstalk(Int_t mod) {
730 // function add the crosstalk effect to signal
731 // temporal function, should be checked...!!!
733 // create and inizialice crosstalk map
734 Float_t* ctk = new Float_t[fNofMaps*fMaxNofSamples+1];
736 Error( "ApplyCrosstalk", "no memory for temporal map: exit \n" );
739 memset( ctk, 0, sizeof(Float_t)*(fNofMaps*fMaxNofSamples+1) );
740 AliITSCalibrationSDD* calibr = (AliITSCalibrationSDD*)GetCalibrationModel(mod);
741 for( Int_t z=0; z<fNofMaps; z++ ) {
742 Double_t baseline = calibr->GetBaseline(z);
748 for( Int_t l=0; l<fMaxNofSamples; l++ ) {
749 Float_t fadc = (Float_t)fHitMap2->GetSignal( z, l );
750 if( fadc > baseline ) {
751 if( on == kFALSE && l<fMaxNofSamples-4 ) {
752 Float_t fadc1 = (Float_t)fHitMap2->GetSignal( z, l+1 );
753 if( fadc1 < fadc ) continue;
760 else { // end fadc > baseline
764 // make smooth derivative
765 Float_t* dev = new Float_t[fMaxNofSamples+1];
766 memset( dev, 0, sizeof(Float_t)*(fMaxNofSamples+1) );
768 Error( "ApplyCrosstalk",
769 "no memory for temporal array: exit \n" );
772 for( Int_t i=tstart; i<tstop; i++ ) {
773 if( i > 2 && i < fMaxNofSamples-2 )
774 dev[i] = -0.2*fHitMap2->GetSignal( z,i-2 )
775 -0.1*fHitMap2->GetSignal( z,i-1 )
776 +0.1*fHitMap2->GetSignal( z,i+1 )
777 +0.2*fHitMap2->GetSignal( z,i+2 );
780 // add crosstalk contribution to neibourg anodes
781 for( Int_t i=tstart; i<tstop; i++ ) {
783 Int_t i1 = (Int_t)((i-tstart)*.61+tstart+0.5); //
784 Float_t ctktmp = -dev[i1] * 0.25;
786 ctk[anode*fMaxNofSamples+i] += ctktmp;
789 if( anode < fNofMaps ) {
790 ctk[anode*fMaxNofSamples+i] += ctktmp;
795 } // if( nTsteps > 2 )
797 } // if( on == kTRUE )
802 for( Int_t a=0; a<fNofMaps; a++ )
803 for( Int_t t=0; t<fMaxNofSamples; t++ ) {
804 Float_t signal = fHitMap2->GetSignal(a,t)+ctk[a*fMaxNofSamples+t];
805 fHitMap2->SetHit( a, t, signal );
811 //______________________________________________________________________
812 Int_t AliITSsimulationSDD::Convert10to8(Int_t signal) const {
813 // To the 10 to 8 bit lossive compression.
814 // code from Davide C. and Albert W.
816 if (signal < 128) return signal;
817 if (signal < 256) return (128+((signal-128)>>1));
818 if (signal < 512) return (192+((signal-256)>>3));
819 if (signal < 1024) return (224+((signal-512)>>4));
822 //______________________________________________________________________
823 Int_t AliITSsimulationSDD::Convert8to10(Int_t signal) const {
824 // Decompression from 8 to 10 bit
826 if (signal < 0 || signal > 255) {
827 AliWarning(Form("Signal value %d out of range",signal));
829 } // end if signal <0 || signal >255
831 if (signal < 128) return signal;
833 if (TMath::Odd(signal)) return (128+((signal-128)<<1));
834 else return (128+((signal-128)<<1)+1);
835 } // end if signal < 192
837 if (TMath::Odd(signal)) return (256+((signal-192)<<3)+3);
838 else return (256+((signal-192)<<3)+4);
839 } // end if signal < 224
840 if (TMath::Odd(signal)) return (512+((signal-224)<<4)+7);
841 return (512+((signal-224)<<4)+8);
843 //______________________________________________________________________
844 void AliITSsimulationSDD::Compress2D(){
845 // 2D zero-suppression algorithm as described in ALICE-INT-1999-28 V10
846 AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
847 for (Int_t iWing=0; iWing<2; iWing++) {
848 Int_t tL=res->GetZSLowThreshold(iWing);
849 Int_t tH=res->GetZSHighThreshold(iWing);
850 for (Int_t i=0; i<fNofMaps/2; i++) {
851 Int_t ian=i+iWing*fNofMaps/2;
852 if( !fAnodeFire[ian] ) continue;
853 for (Int_t itb=0; itb<fMaxNofSamples; itb++) {
854 Int_t nLow=0, nHigh=0;
855 Float_t cC=fHitMap2->GetSignal(ian,itb);
857 nLow++; // cC is greater than tL
860 // Get "quintuple": WCE
863 if(itb>0) wW=fHitMap2->GetSignal(ian,itb-1);
867 if(itb<fMaxNofSamples-1) eE=fHitMap2->GetSignal(ian,itb+1);
871 if(i<(fNofMaps/2-1)) nN=fHitMap2->GetSignal(ian+1,itb);
875 if(i>0) sS=fHitMap2->GetSignal(ian-1,itb);
879 if(nLow>=3 && nHigh>=1){
880 Int_t signal=(Int_t)cC;
881 Int_t signalc = Convert10to8(signal);
882 Int_t signale = Convert8to10(signalc);
883 signalc-=tL; // subtract low threshold after 10 to 8 bit compression
884 if(signalc>=4) AddDigit(ian,itb,signalc,signale); // store C
892 //______________________________________________________________________
893 void AliITSsimulationSDD::StoreAllDigits(){
894 // store digits for non-zero-suppressed data
895 for (Int_t ian=0; ian<fNofMaps; ian++) {
896 for (Int_t itb=0; itb<fMaxNofSamples; itb++){
897 Int_t signal=(Int_t)(fHitMap2->GetSignal(ian,itb));
898 Int_t signalc = Convert10to8(signal);
899 Int_t signale = Convert8to10(signalc);
900 AddDigit(ian,itb,signalc,signale);
904 //______________________________________________________________________
905 void AliITSsimulationSDD::CreateHistograms(Int_t scale){
906 // Creates histograms of maps for debugging
909 fHis=new TObjArray(fNofMaps);
910 for (i=0;i<fNofMaps;i++) {
911 TString sddName("sdd_");
913 sprintf(candNum,"%d",i+1);
914 sddName.Append(candNum);
915 fHis->AddAt(new TH1F(sddName.Data(),"SDD maps",scale*fMaxNofSamples,
916 0.,(Float_t) scale*fMaxNofSamples), i);
919 //______________________________________________________________________
920 void AliITSsimulationSDD::FillHistograms(){
921 // fill 1D histograms from map
925 for( Int_t i=0; i<fNofMaps; i++) {
926 TH1F *hist =(TH1F *)fHis->UncheckedAt(i);
927 Int_t nsamples = hist->GetNbinsX();
928 for( Int_t j=0; j<nsamples; j++) {
929 Double_t signal=fHitMap2->GetSignal(i,j);
930 hist->Fill((Float_t)j,signal);
934 //______________________________________________________________________
935 void AliITSsimulationSDD::ResetHistograms(){
936 // Reset histograms for this detector
939 for (i=0;i<fNofMaps;i++ ) {
940 if (fHis->At(i)) ((TH1F*)fHis->At(i))->Reset();
943 //______________________________________________________________________
944 TH1F *AliITSsimulationSDD::GetAnode(Int_t wing, Int_t anode) {
945 // Fills a histogram from a give anode.
949 if(wing <=0 || wing > 2) {
950 Warning("GetAnode","Wrong wing number: %d",wing);
952 } // end if wing <=0 || wing >2
953 if(anode <=0 || anode > fNofMaps/2) {
954 Warning("GetAnode","Wrong anode number: %d",anode);
956 } // end if ampde <=0 || andoe > fNofMaps/2
958 Int_t index = (wing-1)*fNofMaps/2 + anode-1;
959 return (TH1F*)(fHis->At(index));
961 //______________________________________________________________________
962 void AliITSsimulationSDD::WriteToFile(TFile *hfile) {
963 // Writes the histograms to a file
969 for(i=0; i<fNofMaps; i++) fHis->At(i)->Write(); //fAdcs[i]->Write();
972 //______________________________________________________________________
973 void AliITSsimulationSDD::WriteSDigits(){
974 // Fills the Summable digits Tree
975 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
977 for( Int_t i=0; i<fNofMaps; i++ ) {
978 if( !fAnodeFire[i] ) continue;
979 for( Int_t j=0; j<fMaxNofSamples; j++ ) {
980 Double_t sig = fHitMap2->GetSignal( i, j );
982 Int_t jdx = j*fScaleSize;
983 Int_t index = fpList->GetHitIndex( i, j );
984 AliITSpListItem pItemTmp2( fModule, index, 0. );
985 // put the fScaleSize analog digits in only one
986 for( Int_t ik=0; ik<fScaleSize; ik++ ) {
987 AliITSpListItem *pItemTmp = fpList->GetpListItem(i,jdx+ik);
988 if( pItemTmp == 0 ) continue;
989 pItemTmp2.Add( pItemTmp );
991 pItemTmp2.AddSignalAfterElect( fModule, index, sig );
992 pItemTmp2.AddNoise(fModule,index,fHitNoiMap2->GetSignal(i,j));
993 aliITS->AddSumDigit( pItemTmp2 );
994 } // end if (sig > 0.2)
999 //______________________________________________________________________
1000 void AliITSsimulationSDD::PrintStatus() const {
1001 // Print SDD simulation Parameters
1003 cout << "**************************************************" << endl;
1004 cout << " Silicon Drift Detector Simulation Parameters " << endl;
1005 cout << "**************************************************" << endl;
1006 cout << "Flag for Perpendicular tracks: " << (Int_t) fFlag << endl;
1007 cout << "Flag to switch off electronics: " << (Int_t) fDoFFT << endl;
1008 cout << "Number of Anodes used: " << fNofMaps << endl;
1009 cout << "Number of Time Samples: " << fMaxNofSamples << endl;
1010 cout << "Scale size factor: " << fScaleSize << endl;
1011 cout << "**************************************************" << endl;