1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
20 #include <Riostream.h>
24 #include "AliITSdigitSPD.h"
25 #include "AliITShit.h"
26 #include "AliITSmodule.h"
27 #include "AliITSpList.h"
28 #include "AliITSCalibrationSPD.h"
29 #include "AliITSsegmentationSPD.h"
30 #include "AliITSsimulationSPD.h"
33 #include "AliCDBEntry.h"
34 #include "AliCDBLocal.h"
38 ClassImp(AliITSsimulationSPD)
39 ////////////////////////////////////////////////////////////////////////
41 // Modified by D. Elia, G.E. Bruno, H. Tydesjo
42 // Fast diffusion code by Bjorn S. Nilsen
46 // Written by Boris Batyunya
50 // AliITSsimulationSPD is to do the simulation of SPDs.
52 ////////////////////////////////////////////////////////////////////////
54 //______________________________________________________________________
55 AliITSsimulationSPD::AliITSsimulationSPD():
60 // Default constructor.
66 // A default constructed AliITSsimulationSPD class.
68 AliDebug(1,Form("Calling default constructor"));
71 //______________________________________________________________________
72 AliITSsimulationSPD::AliITSsimulationSPD(AliITSDetTypeSim *dettyp):
73 AliITSsimulation(dettyp),
77 // standard constructor
79 // AliITSsegmentation *seg A pointer to the segmentation class
80 // to be used for this simulation
81 // AliITSCalibration *resp A pointer to the responce class to
82 // be used for this simulation
86 // A default constructed AliITSsimulationSPD class.
88 AliDebug(1,Form("Calling standard constructor "));
89 // AliITSCalibrationSPD* res = (AliITSCalibrationSPD*)GetCalibrationModel(fDetType->GetITSgeom()->GetStartSPD());
90 // res->SetTemperature(0.0);
91 // res->SetDistanceOverVoltage(0.0);
94 //______________________________________________________________________
95 void AliITSsimulationSPD::Init(){
103 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
107 SetMap(new AliITSpList(GetNPixelsZ(),GetNPixelsX()));
108 AliITSCalibrationSPD* res = (AliITSCalibrationSPD*)GetCalibrationModel(fDetType->GetITSgeom()->GetStartSPD());
109 AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
110 Double_t bias = res->GetBiasVoltage();
111 // cout << "Bias Voltage --> " << bias << endl; // dom
112 res->SetDistanceOverVoltage(kmictocm*seg->Dy(),bias);
113 // set kind of coupling ("old" or "new")
115 res->GetCouplingOption(opt);
116 char *old = strstr(opt,"old");
123 // Get the calibration objects for each module(ladder)
124 GetCalibrationObjects(0); //RunNr 0 hard coded for now
127 //______________________________________________________________________
128 AliITSsimulationSPD::~AliITSsimulationSPD(){
142 //______________________________________________________________________
143 AliITSsimulationSPD::AliITSsimulationSPD(const
145 &s) : AliITSsimulation(s){
148 // AliITSsimulationSPD &s The original class for which
149 // this class is a copy of
157 //______________________________________________________________________
158 AliITSsimulationSPD& AliITSsimulationSPD::operator=(const
159 AliITSsimulationSPD &s){
160 // Assignment operator
162 // AliITSsimulationSPD &s The original class for which
163 // this class is a copy of
168 if(&s == this) return *this;
170 fCoupling = s.fCoupling;
171 fSPDname = s.fSPDname;
174 //______________________________________________________________________
175 AliITSsimulation& AliITSsimulationSPD::operator=(const
176 AliITSsimulation &s){
177 // Assignment operator
179 // AliITSsimulationSPD &s The original class for which
180 // this class is a copy of
185 if(&s == this) return *this;
186 Error("AliITSsimulationSPD","Not allowed to make a = with "
187 "AliITSsimulationSPD","Using default creater instead");
192 //______________________________________________________________________
193 void AliITSsimulationSPD::GetCalibrationObjects(Int_t RunNr) {
194 // Gets the calibration objects for each module (ladder)
196 // RunNr: hard coded to RunNr=0 for now
202 AliCDBManager* man = AliCDBManager::Instance();
204 AliCDBEntry *entrySPD=0;
205 entrySPD = man->Get("ITS/Calib/CalibSPD", RunNr);
208 AliWarning("Cannot find SPD calibration entry in default storage! Using local storage $ALICE_ROOT");
209 AliCDBStorage *localStor =
210 AliCDBManager::Instance()->GetStorage("local://$ALICE_ROOT");
211 entrySPD = localStor->Get("ITS/Calib/CalibSPD", RunNr);
213 AliFatal("Cannot find SPD calibration entry!");
218 TObjArray *respSPD = (TObjArray *)entrySPD->GetObject();
220 AliFatal("Cannot get data from SPD database entry!");
223 for (Int_t mod=0; mod<240; mod++) {
224 fCalObj[mod] = (AliITSCalibrationSPD*) respSPD->At(mod);
228 //______________________________________________________________________
229 void AliITSsimulationSPD::InitSimulationModule(Int_t module, Int_t event){
230 // This function creates maps to build the list of tracks for each
231 // summable digit. Inputs defined by base class.
233 // Int_t module // Module number to be simulated
234 // Int_t event // Event number to be simulated
240 AliDebug(1,Form("(module=%d,event=%d)",module,event));
241 SetModuleNumber(module);
242 SetEventNumber(event);
245 //_____________________________________________________________________
246 void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod,Int_t,
248 // This function begins the work of creating S-Digits. Inputs defined
251 // AliITSmodule *mod // module
253 // Int_t event // Event number
257 // test // test returns kTRUE if the module contained hits
258 // // test returns kFALSE if it did not contain hits
260 AliDebug(1,Form("(mod=%p, ,event=%d)",mod,event));
261 if(!(mod->GetNhits())){
262 AliDebug(1,Form("In event %d module %d there are %d hits returning.",
263 event, mod->GetIndex(),mod->GetNhits()));
264 return;// if module has no hits don't create Sdigits
266 SetModuleNumber(mod->GetIndex());
267 SetEventNumber(event);
269 HitToSDigitFast(mod);
270 RemoveDeadPixels(mod);
271 // cout << "After Remove in SDigitiseModule !!!!!" << endl; // dom
272 // cout << "Module " << mod->GetIndex() << " Event " << event << endl; // dom
276 //______________________________________________________________________
277 void AliITSsimulationSPD::WriteSDigits(){
278 // This function adds each S-Digit to pList
285 Int_t ix, nix, iz, niz;
286 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
288 AliDebug(1,Form("Writing SDigits for module %d",GetModuleNumber()));
289 // cout << "WriteSDigits for module " << GetModuleNumber() << endl; // dom
290 GetMap()->GetMaxMapIndex(niz, nix);
291 for(iz=0; iz<niz; iz++)for(ix=0; ix<nix; ix++){
292 if(GetMap()->GetSignalOnly(iz,ix)>0.0){
293 // cout << " Signal gt 0 iz ix " << iz << ix << " Module " << GetModuleNumber() << endl; // dom
294 aliITS->AddSumDigit(*(GetMap()->GetpListItem(iz,ix)));
295 if(AliDebugLevel()>0) {
296 AliDebug(1,Form("%d, %d",iz,ix));
297 cout << *(GetMap()->GetpListItem(iz,ix)) << endl;
299 } // end if GetMap()->GetSignalOnly(iz,ix)>0.0
303 //______________________________________________________________________
304 void AliITSsimulationSPD::FinishSDigitiseModule(){
305 // This function calls SDigitsToDigits which creates Digits from SDigits
314 // cout << "FinishSDigitiseModule for module " << GetModuleNumber() << endl; // dom
315 FrompListToDigits(); // Charge To Signal both adds noise and
319 //______________________________________________________________________
320 void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod,Int_t,
322 // This function creates Digits straight from the hits and then adds
323 // electronic noise to the digits before adding them to pList
324 // Each of the input variables is passed along to HitToSDigit
326 // AliITSmodule *mod module
334 AliDebug(1,Form("(mod=%p,,)",mod));
336 HitToSDigitFast(mod);
337 RemoveDeadPixels(mod);
338 // cout << "After Remove in DigitiseModule in module " << mod->GetIndex() << endl; // dom
342 //______________________________________________________________________
343 void AliITSsimulationSPD::HitToSDigit(AliITSmodule *mod){
344 // Does the charge distributions using Gaussian diffusion charge charing.
346 // AliITSmodule *mod Pointer to this module
351 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
352 TObjArray *hits = mod->GetHits();
353 Int_t nhits = hits->GetEntriesFast();
356 Double_t x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0,de=0.0;
357 Double_t x,y,z,t,tp,st,dt=0.2,el,sig,sigx,sigz,fda;
358 AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
359 AliITSCalibrationSPD* res = (AliITSCalibrationSPD*)GetCalibrationModel(fDetType->GetITSgeom()->GetStartSPD());
360 Double_t thick = 0.5*kmictocm*seg->Dy(); // Half Thickness
361 res->GetSigmaDiffusionAsymmetry(fda);
363 AliDebug(1,Form("(mod=%p) fCoupling=%d",mod,fCoupling));
365 for(h=0;h<nhits;h++){
366 if(AliDebugLevel()>0) {
367 AliDebug(1,Form("Hits, %d", h));
368 cout << *(mod->GetHit(h)) << endl;
370 if(!mod->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,idtrack)) continue;
371 st = TMath::Sqrt(x1*x1+y1*y1+z1*z1);
373 st = (Double_t)((Int_t)(st/kmictocm)); // number of microns
374 if(st<=1.0) st = 1.0;
376 for(t=0.0;t<1.0;t+=dt){ // Integrate over t
381 if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
382 el = res->GeVToCharge((Double_t)(dt*de));
384 if(el<=0.0) cout<<"el="<<el<<" dt="<<dt
387 sig = res->SigmaDiffusion1D(TMath::Abs(thick + y));
388 // SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
391 SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,idtrack,h);
392 cout << "sigx, sigz, y "<< sigx << " " << sigz<< " " << TMath::Abs(thick + y) << endl;// ciccio
394 } else { // st == 0.0 deposit it at this point
398 if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
399 el = res->GeVToCharge((Double_t)de);
400 sig = res->SigmaDiffusion1D(TMath::Abs(thick + y));
401 // SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
404 SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,idtrack,h);
411 for(i=0;i<GetMap()->GetEntries();i++)
412 if(GetMap()->GetpListItem(i)==0) continue;
414 GetMap()->GetMapIndex(GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
415 SetCoupling(iz,ix,idtrack,h);
419 for(i=0;i<GetMap()->GetEntries();i++)
420 if(GetMap()->GetpListItem(i)==0) continue;
422 GetMap()->GetMapIndex(GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
423 SetCouplingOld(iz,ix,idtrack,h);
427 } // Loop over all hits h
428 if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
430 //______________________________________________________________________
431 void AliITSsimulationSPD::HitToSDigitFast(AliITSmodule *mod){
432 // Does the charge distributions using Gaussian diffusion charge charing. // Inputs:
433 // AliITSmodule *mod Pointer to this module
438 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
440 const Double_t kti[kn10]={7.443716945e-3,2.166976971e-1,3.397047841e-1,
441 4.325316833e-1,4.869532643e-1,5.130467358e-1,
442 5.674683167e-1,6.602952159e-1,7.833023029e-1,
444 const Double_t kwi[kn10]={1.477621124e-1,1.346333597e-1,1.095431813e-1,
445 7.472567455e-2,3.333567215e-2,3.333567215e-2,
446 7.472567455e-2,1.095431813e-1,1.346333597e-1,
448 TObjArray *hits = mod->GetHits();
449 Int_t nhits = hits->GetEntriesFast();
452 Double_t x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0,de=0.0;
453 Double_t x,y,z,t,st,el,sig,sigx,sigz,fda;
454 AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
455 AliITSCalibrationSPD* res = (AliITSCalibrationSPD*)GetCalibrationModel(fDetType->GetITSgeom()->GetStartSPD());
456 Double_t thick = 0.5*kmictocm*seg->Dy(); // Half thickness
457 res->GetSigmaDiffusionAsymmetry(fda);
458 // cout << "Half Thickness " << thick << endl; // dom
459 // cout << "Diffusion asymm " << fda << endl; // dom
461 AliDebug(1,Form("(mod=%p) fCoupling=%d",mod,fCoupling));
463 for(h=0;h<nhits;h++){
464 if(AliDebugLevel()>0) {
465 AliDebug(1,Form("Hits, %d", h));
466 cout << *(mod->GetHit(h)) << endl;
468 if(!mod->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,idtrack)) continue;
469 st = TMath::Sqrt(x1*x1+y1*y1+z1*z1);
470 if(st>0.0) for(i=0;i<kn10;i++){ // Integrate over t
475 if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
476 // el = res->GeVToCharge((Double_t)(dt*de));
477 // el = 1./kn10*res->GeVToCharge((Double_t)de);
478 el = kwi[i]*res->GeVToCharge((Double_t)de);
480 if(el<=0.0) cout<<"el="<<el<<" kwi["<<i<<"]="<<kwi[i]
483 sig = res->SigmaDiffusion1D(TMath::Abs(thick + y));
486 //SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
487 SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,idtrack,h);
488 // cout << "sigx sigz " << sigx << " " << sigz << endl; // dom
489 } // end for i // End Integrate over t
490 else { // st == 0.0 deposit it at this point
494 if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
495 el = res->GeVToCharge((Double_t)de);
496 sig = res->SigmaDiffusion1D(TMath::Abs(thick + y));
497 //SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
500 SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,idtrack,h);
507 for(i=0;i<GetMap()->GetEntries();i++)
508 if(GetMap()->GetpListItem(i)==0) continue;
510 GetMap()->GetMapIndex(GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
511 SetCoupling(iz,ix,idtrack,h);
515 for(i=0;i<GetMap()->GetEntries();i++)
516 if(GetMap()->GetpListItem(i)==0) continue;
518 GetMap()->GetMapIndex(GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
519 SetCouplingOld(iz,ix,idtrack,h);
523 } // Loop over all hits h
524 if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
526 //______________________________________________________________________
527 void AliITSsimulationSPD::SpreadCharge(Double_t x0,Double_t z0,
529 Double_t el,Double_t sig,Int_t t,
531 // Spreads the charge over neighboring cells. Assume charge is distributed
532 // as charge(x,z) = (el/2*pi*sig*sig)*exp(-arg)
533 // arg=((x-x0)*(x-x0)/2*sig*sig)+((z-z0*z-z0)/2*sig*sig)
534 // Defined this way, the integral over all x and z is el.
536 // Double_t x0 x position of point where charge is liberated
537 // Double_t y0 y position of point where charge is liberated
538 // Double_t z0 z position of point where charge is liberated
539 // Int_t ix0 row of cell corresponding to point x0
540 // Int_t iz0 columb of cell corresponding to point z0
541 // Double_t el number of electrons liberated in this step
542 // Double_t sig Sigma difusion for this step (y0 dependent)
543 // Int_t t track number
544 // Int_t ti hit track index number
545 // Int_t hi hit "hit" index number
550 const Int_t knx = 3,knz = 2;
551 const Double_t kRoot2 = 1.414213562; // Sqrt(2).
552 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
553 Int_t ix,iz,ixs,ixe,izs,ize;
555 Double_t x1,x2,z1,z2,s,sp;
556 AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
559 if(GetDebug(4)) Info("SpreadCharge","(x0=%e,z0=%e,ix0=%d,iz0=%d,el=%e,"
560 "sig=%e,t=%d,i=%d)",x0,z0,ix0,iz0,el,sig,t,hi);
561 if(sig<=0.0) { // if sig<=0 No diffusion to simulate.
562 GetMap()->AddSignal(iz0,ix0,t,hi,GetModuleNumber(),el);
564 cout << "sig<=0.0=" << sig << endl;
568 sp = 1.0/(sig*kRoot2);
570 cout << "sig=" << sig << " sp=" << sp << endl;
572 ixs = TMath::Max(-knx+ix0,0);
573 ixe = TMath::Min(knx+ix0,seg->Npx()-1);
574 izs = TMath::Max(-knz+iz0,0);
575 ize = TMath::Min(knz+iz0,seg->Npz()-1);
576 for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
577 seg->DetToLocal(ix,iz,x,z); // pixel center
580 x2 = x1 + 0.5*kmictocm*seg->Dpx(ix); // Upper
581 x1 -= 0.5*kmictocm*seg->Dpx(ix); // Lower
582 z2 = z1 + 0.5*kmictocm*seg->Dpz(iz); // Upper
583 z1 -= 0.5*kmictocm*seg->Dpz(iz); // Lower
584 x1 -= x0; // Distance from where track traveled
585 x2 -= x0; // Distance from where track traveled
586 z1 -= z0; // Distance from where track traveled
587 z2 -= z0; // Distance from where track traveled
588 s = 0.25; // Correction based on definision of Erfc
589 s *= TMath::Erfc(sp*x1) - TMath::Erfc(sp*x2);
591 cout <<"el="<<el<<" ix0="<<ix0<<" ix="<<ix<<" x0="<<x<<
592 " iz0="<<iz0<<" iz="<<iz<<" z0="<<z<<
593 " sp*x1="<<sp*x1<<" sp*x2="<<sp*x2<<" s="<<s;
595 s *= TMath::Erfc(sp*z1) - TMath::Erfc(sp*z2);
597 cout<<" sp*z1="<<sp*z1<<" sp*z2="<<sp*z2<<" s="<<s<< endl;
599 GetMap()->AddSignal(iz,ix,t,hi,GetModuleNumber(),s*el);
602 //______________________________________________________________________
603 void AliITSsimulationSPD::SpreadChargeAsym(Double_t x0,Double_t z0,
605 Double_t el,Double_t sigx,Double_t sigz,
607 // Spreads the charge over neighboring cells. Assume charge is distributed
608 // as charge(x,z) = (el/2*pi*sigx*sigz)*exp(-arg)
609 // arg=((x-x0)*(x-x0)/2*sigx*sigx)+((z-z0*z-z0)/2*sigz*sigz)
610 // Defined this way, the integral over all x and z is el.
612 // Double_t x0 x position of point where charge is liberated
613 // Double_t y0 y position of point where charge is liberated
614 // Double_t z0 z position of point where charge is liberated
615 // Int_t ix0 row of cell corresponding to point x0
616 // Int_t iz0 columb of cell corresponding to point z0
617 // Double_t el number of electrons liberated in this step
618 // Double_t sigx Sigma difusion along x for this step (y0 dependent)
619 // Double_t sigz Sigma difusion along z for this step (y0 dependent)
620 // Int_t t track number
621 // Int_t ti hit track index number
622 // Int_t hi hit "hit" index number
627 const Int_t knx = 3,knz = 2;
628 const Double_t kRoot2 = 1.414213562; // Sqrt(2).
629 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
630 Int_t ix,iz,ixs,ixe,izs,ize;
632 Double_t x1,x2,z1,z2,s,spx,spz;
633 AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
636 if(GetDebug(4)) Info("SpreadCharge","(x0=%e,z0=%e,ix0=%d,iz0=%d,el=%e,"
637 "sig=%e,t=%d,i=%d)",x0,z0,ix0,iz0,el,sigx,sigz,t,hi);
638 if(sigx<=0.0 || sigz<=0.0) { // if sig<=0 No diffusion to simulate.
639 GetMap()->AddSignal(iz0,ix0,t,hi,GetModuleNumber(),el);
641 cout << "sigx<=0.0=" << sigx << endl;
642 cout << "sigz<=0.0=" << sigz << endl;
646 spx = 1.0/(sigx*kRoot2); spz = 1.0/(sigz*kRoot2);
648 cout << "sigx=" << sigx << " spx=" << spx << endl;
649 cout << "sigz=" << sigz << " spz=" << spz << endl;
651 ixs = TMath::Max(-knx+ix0,0);
652 ixe = TMath::Min(knx+ix0,seg->Npx()-1);
653 izs = TMath::Max(-knz+iz0,0);
654 ize = TMath::Min(knz+iz0,seg->Npz()-1);
655 for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
656 seg->DetToLocal(ix,iz,x,z); // pixel center
659 x2 = x1 + 0.5*kmictocm*seg->Dpx(ix); // Upper
660 x1 -= 0.5*kmictocm*seg->Dpx(ix); // Lower
661 z2 = z1 + 0.5*kmictocm*seg->Dpz(iz); // Upper
662 z1 -= 0.5*kmictocm*seg->Dpz(iz); // Lower
663 x1 -= x0; // Distance from where track traveled
664 x2 -= x0; // Distance from where track traveled
665 z1 -= z0; // Distance from where track traveled
666 z2 -= z0; // Distance from where track traveled
667 s = 0.25; // Correction based on definision of Erfc
668 s *= TMath::Erfc(spx*x1) - TMath::Erfc(spx*x2);
670 cout <<"el="<<el<<" ix0="<<ix0<<" ix="<<ix<<" x0="<<x<<
671 " iz0="<<iz0<<" iz="<<iz<<" z0="<<z<<
672 " spx*x1="<<spx*x1<<" spx*x2="<<spx*x2<<" s="<<s;
674 s *= TMath::Erfc(spz*z1) - TMath::Erfc(spz*z2);
676 cout<<" spz*z1="<<spz*z1<<" spz*z2="<<spz*z2<<" s="<<s<< endl;
678 GetMap()->AddSignal(iz,ix,t,hi,GetModuleNumber(),s*el);
681 //______________________________________________________________________
682 void AliITSsimulationSPD::RemoveDeadPixels(AliITSmodule *mod){
683 // Removes dead pixels on each module (ladder)
685 // Module Index (0,239)
691 Int_t moduleNr = mod->GetIndex();
692 Int_t nrDead = fCalObj[moduleNr]->GetNrDead();
693 for (Int_t i=0; i<nrDead; i++) {
694 GetMap()->DeleteHit(fCalObj[moduleNr]->GetDeadColAt(i),fCalObj[moduleNr]->GetDeadRowAt(i));
697 //______________________________________________________________________
698 void AliITSsimulationSPD::FrompListToDigits(){
699 // add noise and electronics, perform the zero suppression and add the
707 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
709 Double_t electronics;
711 const Int_t knmaxtrk=AliITSdigitSPD::GetNTracks();
712 static AliITSdigitSPD dig;
713 AliITSCalibrationSPD* res = (AliITSCalibrationSPD*)GetCalibrationModel(fDetType->GetITSgeom()->GetStartSPD());
714 if(GetDebug(1)) Info("FrompListToDigits","()");
715 for(iz=0; iz<GetNPixelsZ(); iz++) for(ix=0; ix<GetNPixelsX(); ix++){
716 // NEW (for the moment plugged by hand, in the future possibly read from Data Base)
717 // here parametrize the efficiency of the pixel along the row for the test columns (1,9,17,25)
718 // if(iz==1 || iz == 9 || iz == 17 || iz == 25) {
719 // Double_t eff,p1=0.,p2=0.;
722 // case 1: p1=0.63460;p2=0.42438E-01;break;
723 // case 9: p1=0.41090;p2=0.75914E-01;break;
724 // case 17: p1=0.31883;p2=0.91502E-01;break;
725 // case 25: p1=0.48828;p2=0.57975E-01;break;
727 // eff=1.-p1*exp(-p2*x);
728 // if (gRandom->Rndm() >= eff) continue;
730 // END parametrize the efficiency
732 electronics = res->ApplyBaselineAndNoise();
733 UpdateMapNoise(ix,iz,electronics);
735 // Apply Threshold and write Digits.
736 sig = GetMap()->GetSignalOnly(iz,ix);
737 FillHistograms(ix,iz,sig+electronics);
739 cout<<sig<<"+"<<electronics<<">threshold("<<ix<<","<<iz
740 <<")="<<GetThreshold() <<endl;
742 if (sig+electronics <= GetThreshold()) continue;
747 // dig.SetSignalSPD((Int_t) GetMap()->GetSignal(iz,ix));
748 Double_t aSignal = GetMap()->GetSignal(iz,ix);
749 if (TMath::Abs(aSignal)>2147483647.0) {
750 //PH 2147483647 is the max. integer
751 //PH This apparently is a problem which needs investigation
752 AliWarning(Form("Too big or too small signal value %f",aSignal));
753 aSignal = TMath::Sign((Double_t)2147483647,aSignal);
755 dig.SetSignalSPD((Int_t)aSignal);
757 for(j=0;j<knmaxtrk;j++){
758 if (j<GetMap()->GetNEntries()) {
759 dig.SetTrack(j,GetMap()->GetTrack(iz,ix,j));
760 dig.SetHit(j,GetMap()->GetHit(iz,ix,j));
761 }else { // Default values
767 cout<<iz<<","<<ix<<","<<*(GetMap()->GetpListItem(iz,ix))<<endl;
769 aliITS->AddSimDigit(0,&dig);
772 //______________________________________________________________________
773 void AliITSsimulationSPD::CreateHistograms(){
774 // create 1D histograms for tests
782 if(GetDebug(1)) Info("CreateHistograms","create histograms");
784 fHis = new TObjArray(GetNPixelsZ());
785 TString fSPDname("spd_");
786 for(Int_t i=0;i<GetNPixelsZ();i++) {
788 sprintf(pixelz,"%d",i);
789 fSPDname.Append(pixelz);
790 fHis->AddAt(new TH1F(fSPDname.Data(),"SPD maps",
791 GetNPixelsX(),0.,(Double_t)GetNPixelsX()),i);
794 //______________________________________________________________________
795 void AliITSsimulationSPD::FillHistograms(Int_t ix,Int_t iz,Double_t v){
796 // Fill the histogram
804 if(!GetHistArray()) return; // Only fill if setup.
805 if(GetDebug(2)) Info("FillHistograms","fill histograms");
806 GetHistogram(iz)->Fill(ix,v);
808 //______________________________________________________________________
809 void AliITSsimulationSPD::ResetHistograms(){
810 // Reset histograms for this detector
818 if(!GetHistArray()) return; // Only fill if setup.
819 if(GetDebug(2)) Info("FillHistograms","fill histograms");
820 for ( int i=0;i<GetNPixelsZ();i++ ) {
821 if (fHis->At(i)) ((TH1F*)fHis->At(i))->Reset();
825 //______________________________________________________________________
826 void AliITSsimulationSPD::SetCoupling(Int_t col, Int_t row, Int_t ntrack,
828 // Take into account the coupling between adiacent pixels.
829 // The parameters probcol and probrow are the probability of the
830 // signal in one pixel shared in the two adjacent pixels along
831 // the column and row direction, respectively.
832 // Note pList is goten via GetMap() and module is not need any more.
833 // Otherwise it is identical to that coded by Tiziano Virgili (BSN).
836 <img src="picts/ITS/barimodel_3.gif">
839 <font size=+2 color=red>
840 <a href="mailto:tiziano.virgili@cern.ch"></a>.
846 // Int_t col z cell index
847 // Int_t row x cell index
848 // Int_t ntrack track incex number
849 // Int_t idhit hit index number
855 Double_t pulse1,pulse2;
856 Double_t couplR=0.0,couplC=0.0;
859 GetCouplings(couplC,couplR);
860 if(GetDebug(3)) Info("SetCoupling","(col=%d,row=%d,ntrack=%d,idhit=%d) "
861 "Calling SetCoupling couplC=%e couplR=%e",
862 col,row,ntrack,idhit,couplC,couplR);
865 pulse1 = GetMap()->GetSignalOnly(col,row);
867 for (Int_t isign=-1;isign<=1;isign+=2){// loop in col direction
870 xr = gRandom->Rndm();
871 if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplC)){
875 UpdateMapSignal(row,j1,ntrack,idhit,pulse1);
877 flag = 1; // only first next!!
880 // loop in row direction
883 xr = gRandom->Rndm();
884 if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplR)){
888 UpdateMapSignal(j2,col,ntrack,idhit,pulse2);
890 flag = 1; // only first next!!
895 //______________________________________________________________________
896 void AliITSsimulationSPD::SetCouplingOld(Int_t col, Int_t row,
897 Int_t ntrack,Int_t idhit) {
898 // Take into account the coupling between adiacent pixels.
899 // The parameters probcol and probrow are the fractions of the
900 // signal in one pixel shared in the two adjacent pixels along
901 // the column and row direction, respectively.
904 <img src="picts/ITS/barimodel_3.gif">
907 <font size=+2 color=red>
908 <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>.
914 // Int_t col z cell index
915 // Int_t row x cell index
916 // Int_t ntrack track incex number
917 // Int_t idhit hit index number
918 // Int_t module module number
924 Double_t pulse1,pulse2;
925 Double_t couplR=0.0,couplC=0.0;
927 GetCouplings(couplC,couplR);
930 // cout << "Threshold --> " << GetThreshold() << endl; // dom
931 // cout << "Couplings --> " << couplC << " " << couplR << endl; //dom
934 if(GetDebug(3)) Info("SetCouplingOld","(col=%d,row=%d,ntrack=%d,idhit=%d) "
935 "Calling SetCoupling couplC=%e couplR=%e",
936 col,row,ntrack,idhit,couplC,couplR);
937 for (Int_t isign=-1;isign<=1;isign+=2){// loop in col direction
938 pulse1 = GetMap()->GetSignalOnly(col,row);
945 if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold())){
946 pulse1 = GetMap()->GetSignalOnly(col,row);
950 UpdateMapSignal(row,j1,ntrack,idhit,pulse1);
952 flag = 1; // only first next !!
955 // loop in row direction
959 if((j2<0)||(j2>(GetNPixelsX()-1))||(pulse2<GetThreshold())){
960 pulse2 = GetMap()->GetSignalOnly(col,row);
964 UpdateMapSignal(j2,col,ntrack,idhit,pulse2);
966 flag = 1; // only first next!!