/*
$Log$
+Revision 1.37 2002/04/29 11:50:47 cblume
+Change initialization of gAlice in the merging case
+
+Revision 1.36 2002/04/12 12:13:23 cblume
+Add Jiris changes
+
+Revision 1.35 2002/03/28 14:59:07 cblume
+Coding conventions
+
+Revision 1.34 2002/03/25 20:00:44 cblume
+Introduce parameter class and regions of interest for merging
+
+Revision 1.33 2002/02/12 17:32:03 cblume
+Rearrange the deleting of the list of sdigitsmanager
+
+Revision 1.32 2002/02/12 16:07:21 cblume
+Add new constructor
+
+Revision 1.31 2002/02/11 14:27:11 cblume
+New pad plane design, new TRF+PRF, tail cancelation, cross talk
+
+Revision 1.30 2001/11/19 08:44:08 cblume
+Fix bugs reported by Rene
+
+Revision 1.29 2001/11/14 19:44:25 hristov
+Numeric const casted (Alpha)
+
+Revision 1.28 2001/11/14 16:35:58 cblume
+Inherits now from AliDetector
+
+Revision 1.27 2001/11/14 10:50:45 cblume
+Changes in digits IO. Add merging of summable digits
+
+Revision 1.26 2001/11/06 17:19:41 cblume
+Add detailed geometry and simple simulator
+
+Revision 1.25 2001/06/27 09:54:44 cblume
+Moved fField initialization to InitDetector()
+
+Revision 1.24 2001/05/21 16:45:47 hristov
+Last minute changes (C.Blume)
+
+Revision 1.23 2001/05/07 08:04:48 cblume
+New TRF and PRF. Speedup of the code. Digits from amplification region included
+
+Revision 1.22 2001/03/30 14:40:14 cblume
+Update of the digitization parameter
+
+Revision 1.21 2001/03/13 09:30:35 cblume
+Update of digitization. Moved digit branch definition to AliTRD
+
+Revision 1.20 2001/02/25 20:19:00 hristov
+Minor correction: loop variable declared only once for HP, Sun
+
Revision 1.19 2001/02/14 18:22:26 cblume
Change in the geometry of the padplane
///////////////////////////////////////////////////////////////////////////////
// //
// Creates and handles digits from TRD hits //
+// Author: C. Blume (C.Blume@gsi.de) //
// //
// The following effects are included: //
// - Diffusion //
// - ExB effects //
// - Gas gain including fluctuations //
// - Pad-response (simple Gaussian approximation) //
+// - Time-response //
// - Electronics noise //
// - Electronics gain //
// - Digitization //
// The corresponding parameter can be adjusted via the various //
// Set-functions. If these parameters are not explicitly set, default //
// values are used (see Init-function). //
-// To produce digits from a root-file with TRD-hits use the //
-// slowDigitsCreate.C macro. //
+// As an example on how to use this class to produce digits from hits //
+// have a look at the macro hits2digits.C //
+// The production of summable digits is demonstrated in hits2sdigits.C //
+// and the subsequent conversion of the s-digits into normal digits is //
+// explained in sdigits2digits.C. //
// //
///////////////////////////////////////////////////////////////////////////////
#include <TTree.h>
#include <TFile.h>
#include <TF1.h>
+#include <TList.h>
+#include <TTask.h>
#include "AliRun.h"
+#include "AliMagF.h"
+#include "AliRunDigitizer.h"
#include "AliTRD.h"
#include "AliTRDhit.h"
#include "AliTRDsegmentArray.h"
#include "AliTRDdigitsManager.h"
#include "AliTRDgeometry.h"
+#include "AliTRDparameter.h"
ClassImp(AliTRDdigitizer)
//_____________________________________________________________________________
-AliTRDdigitizer::AliTRDdigitizer():TNamed()
+AliTRDdigitizer::AliTRDdigitizer()
{
//
// AliTRDdigitizer default constructor
//
- fInputFile = NULL;
- fDigits = NULL;
- fTRD = NULL;
- fGeo = NULL;
- fPRF = NULL;
- fPRFsmp = NULL;
- fTRF = NULL;
- fTRFint = NULL;
-
- fEvent = 0;
- fGasGain = 0.0;
- fNoise = 0.0;
- fChipGain = 0.0;
- fADCoutRange = 0.0;
- fADCinRange = 0.0;
- fADCthreshold = 0;
- fDiffusionOn = 0;
- fDiffusionT = 0.0;
- fDiffusionL = 0.0;
- fElAttachOn = 0;
- fElAttachProp = 0.0;
- fExBOn = 0;
- fOmegaTau = 0.0;
- fPRFOn = 0;
- fTRFOn = 0;
- fDriftVelocity = 0.0;
-
- fPRFbin = 0;
- fPRFlo = 0.0;
- fPRFhi = 0.0;
- fPRFwid = 0.0;
- fPRFpad = 0;
- fTRFbin = 0;
- fTRFlo = 0.0;
- fTRFhi = 0.0;
- fTRFwid = 0.0;
-
- fCompress = kTRUE;
- fVerbose = 1;
+ fInputFile = 0;
+ fDigitsManager = 0;
+ fSDigitsManagerList = 0;
+ fSDigitsManager = 0;
+ fTRD = 0;
+ fGeo = 0;
+ fPar = 0;
+ fMasks = 0;
+ fEvent = 0;
+ fCompress = kTRUE;
+ fDebug = 0;
+ fSDigits = kFALSE;
+ fSDigitsScale = 0.0;
+ fMergeSignalOnly = kFALSE;
}
//_____________________________________________________________________________
AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
- :TNamed(name,title)
+ :AliDigitizer(name,title)
{
//
- // AliTRDdigitizer default constructor
+ // AliTRDdigitizer constructor
//
- fInputFile = NULL;
- fDigits = NULL;
- fTRD = NULL;
- fGeo = NULL;
- fPRF = NULL;
- fPRFsmp = NULL;
- fTRF = NULL;
- fTRFint = NULL;
+ fInputFile = 0;
+ fDigitsManager = 0;
+ fSDigitsManagerList = 0;
+ fSDigitsManager = 0;
+ fTRD = 0;
+ fGeo = 0;
+ fPar = 0;
+ fMasks = 0;
+ fEvent = 0;
+ fCompress = kTRUE;
+ fDebug = 0;
+ fSDigits = kFALSE;
+ fMergeSignalOnly = kFALSE;
+
+ // For the summable digits
+ fSDigitsScale = 100.;
- fEvent = 0;
+}
- fCompress = kTRUE;
- fVerbose = 1;
+//_____________________________________________________________________________
+AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
+ , const Text_t *name, const Text_t *title)
+ :AliDigitizer(manager,name,title)
+{
+ //
+ // AliTRDdigitizer constructor
+ //
- Init();
+ fInputFile = 0;
+ fDigitsManager = 0;
+ fSDigitsManagerList = 0;
+ fSDigitsManager = 0;
+ fTRD = 0;
+ fGeo = 0;
+ fPar = 0;
+ fMasks = 0;
+ fEvent = 0;
+ fCompress = kTRUE;
+ fDebug = 0;
+ fSDigits = kFALSE;
+ fMergeSignalOnly = kFALSE;
+
+ // For the summable digits
+ fSDigitsScale = 100.;
+
+}
+
+//_____________________________________________________________________________
+AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
+ :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
+{
+ //
+ // AliTRDdigitizer constructor
+ //
+
+ fInputFile = 0;
+ fDigitsManager = 0;
+ fSDigitsManagerList = 0;
+ fSDigitsManager = 0;
+ fTRD = 0;
+ fGeo = 0;
+ fPar = 0;
+ fMasks = 0;
+ fEvent = 0;
+ fCompress = kTRUE;
+ fDebug = 0;
+ fSDigits = kFALSE;
+ fMergeSignalOnly = kFALSE;
+
+ // For the summable digits
+ fSDigitsScale = 100.;
}
if (fInputFile) {
fInputFile->Close();
delete fInputFile;
+ fInputFile = 0;
}
- if (fDigits) {
- delete fDigits;
+ if (fDigitsManager) {
+ delete fDigitsManager;
+ fDigitsManager = 0;
}
- if (fPRF) delete fPRF;
- if (fTRF) delete fTRF;
+ if (fSDigitsManager) {
+ delete fSDigitsManager;
+ fSDigitsManager = 0;
+ }
+
+ if (fSDigitsManagerList) {
+ delete fSDigitsManagerList;
+ fSDigitsManagerList = 0;
+ }
+
+ if (fMasks) {
+ delete [] fMasks;
+ fMasks = 0;
+ }
}
// Copy function
//
- Int_t iBin;
-
- ((AliTRDdigitizer &) d).fInputFile = NULL;
- ((AliTRDdigitizer &) d).fDigits = NULL;
- ((AliTRDdigitizer &) d).fTRD = NULL;
- ((AliTRDdigitizer &) d).fGeo = NULL;
-
- ((AliTRDdigitizer &) d).fEvent = 0;
-
- ((AliTRDdigitizer &) d).fGasGain = fGasGain;
- ((AliTRDdigitizer &) d).fNoise = fNoise;
- ((AliTRDdigitizer &) d).fChipGain = fChipGain;
- ((AliTRDdigitizer &) d).fADCoutRange = fADCoutRange;
- ((AliTRDdigitizer &) d).fADCinRange = fADCinRange;
- ((AliTRDdigitizer &) d).fADCthreshold = fADCthreshold;
- ((AliTRDdigitizer &) d).fDiffusionOn = fDiffusionOn;
- ((AliTRDdigitizer &) d).fDiffusionT = fDiffusionT;
- ((AliTRDdigitizer &) d).fDiffusionL = fDiffusionL;
- ((AliTRDdigitizer &) d).fElAttachOn = fElAttachOn;
- ((AliTRDdigitizer &) d).fElAttachProp = fElAttachProp;
- ((AliTRDdigitizer &) d).fExBOn = fExBOn;
- ((AliTRDdigitizer &) d).fOmegaTau = fOmegaTau;
- ((AliTRDdigitizer &) d).fLorentzFactor = fLorentzFactor;
- ((AliTRDdigitizer &) d).fPRFOn = fPRFOn;
- ((AliTRDdigitizer &) d).fTRFOn = fTRFOn;
-
- ((AliTRDdigitizer &) d).fCompress = fCompress;
- ((AliTRDdigitizer &) d).fVerbose = fVerbose;
-
- fPRF->Copy(*((AliTRDdigitizer &) d).fPRF);
- fTRF->Copy(*((AliTRDdigitizer &) d).fTRF);
-
- ((AliTRDdigitizer &) d).fPRFbin = fPRFbin;
- ((AliTRDdigitizer &) d).fPRFlo = fPRFlo;
- ((AliTRDdigitizer &) d).fPRFhi = fPRFhi;
- ((AliTRDdigitizer &) d).fPRFwid = fPRFwid;
- ((AliTRDdigitizer &) d).fPRFpad = fPRFpad;
- if (((AliTRDdigitizer &) d).fPRFsmp) delete ((AliTRDdigitizer &) d).fPRFsmp;
- ((AliTRDdigitizer &) d).fPRFsmp = new Float_t[fPRFbin];
- for (iBin = 0; iBin < fPRFbin; iBin++) {
- ((AliTRDdigitizer &) d).fPRFsmp[iBin] = fPRFsmp[iBin];
- }
- ((AliTRDdigitizer &) d).fTRFbin = fTRFbin;
- ((AliTRDdigitizer &) d).fTRFlo = fTRFlo;
- ((AliTRDdigitizer &) d).fTRFhi = fTRFhi;
- ((AliTRDdigitizer &) d).fTRFwid = fTRFwid;
- if (((AliTRDdigitizer &) d).fTRFint) delete ((AliTRDdigitizer &) d).fTRFint;
- ((AliTRDdigitizer &) d).fTRFint = new Float_t[fTRFbin];
- for (iBin = 0; iBin < fTRFbin; iBin++) {
- ((AliTRDdigitizer &) d).fTRFint[iBin] = fTRFint[iBin];
- }
-
+ ((AliTRDdigitizer &) d).fInputFile = 0;
+ ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
+ ((AliTRDdigitizer &) d).fSDigitsManager = 0;
+ ((AliTRDdigitizer &) d).fDigitsManager = 0;
+ ((AliTRDdigitizer &) d).fTRD = 0;
+ ((AliTRDdigitizer &) d).fGeo = 0;
+ ((AliTRDdigitizer &) d).fMasks = 0;
+ ((AliTRDdigitizer &) d).fEvent = 0;
+ ((AliTRDdigitizer &) d).fPar = 0;
+ ((AliTRDdigitizer &) d).fCompress = fCompress;
+ ((AliTRDdigitizer &) d).fDebug = fDebug ;
+ ((AliTRDdigitizer &) d).fSDigits = fSDigits;
+ ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale;
+ ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
+
}
//_____________________________________________________________________________
-Int_t AliTRDdigitizer::Diffusion(Float_t driftlength, Float_t *xyz)
+void AliTRDdigitizer::Exec(Option_t* option)
{
//
- // Applies the diffusion smearing to the position of a single electron
+ // Executes the merging
//
- Float_t driftSqrt = TMath::Sqrt(driftlength);
- Float_t sigmaT = driftSqrt * fDiffusionT;
- Float_t sigmaL = driftSqrt * fDiffusionL;
- xyz[0] = gRandom->Gaus(xyz[0], sigmaL * fLorentzFactor);
- xyz[1] = gRandom->Gaus(xyz[1], sigmaT * fLorentzFactor);
- xyz[2] = gRandom->Gaus(xyz[2], sigmaT);
+ Int_t iInput;
- return 1;
+ AliTRDdigitsManager *sdigitsManager;
-}
-
-//_____________________________________________________________________________
-Int_t AliTRDdigitizer::ExB(Float_t driftlength, Float_t *xyz)
-{
- //
- // Applies E x B effects to the position of a single electron
- //
-
- xyz[0] = xyz[0];
- xyz[1] = xyz[1] + fOmegaTau * driftlength;
- xyz[2] = xyz[2];
-
- return 1;
-
-}
-
-//_____________________________________________________________________________
-Int_t AliTRDdigitizer::PadResponse(Float_t signal, Float_t dist, Float_t *pad)
-{
- //
- // Applies the pad response
- //
-
- Int_t iBin = ((Int_t) (( - dist - fPRFlo) / fPRFwid));
-
- Int_t iBin0 = iBin - fPRFpad;
- Int_t iBin1 = iBin;
- Int_t iBin2 = iBin + fPRFpad;
-
- if ((iBin0 >= 0) && (iBin2 < fPRFbin)) {
-
- pad[0] = signal * fPRFsmp[iBin0];
- pad[1] = signal * fPRFsmp[iBin1];
- pad[2] = signal * fPRFsmp[iBin2];
-
- return 1;
+ TString optionString = option;
+ if (optionString.Contains("deb")) {
+ fDebug = 1;
+ if (optionString.Contains("2")) {
+ fDebug = 2;
+ }
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Called with debug option %d\n",fDebug);
+ }
+ // The AliRoot file is already connected by the manager
+ if (gAlice) {
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("AliRun object found on file.\n");
+ }
}
else {
-
- return 0;
-
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Could not find AliRun object.\n");
+ return;
}
-
-}
-
-//_____________________________________________________________________________
-Float_t AliTRDdigitizer::TimeResponse(Float_t time)
-{
- //
- // Applies the preamp shaper time response
- //
-
- Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
- if ((iBin >= 0) && (iBin < fTRFbin)) {
- return fTRFint[iBin];
+
+ Int_t nInput = fManager->GetNinputs();
+ fMasks = new Int_t[nInput];
+ for (iInput = 0; iInput < nInput; iInput++) {
+ fMasks[iInput] = fManager->GetMask(iInput);
}
- else {
- return 0.0;
- }
-}
+ // Initialization
+ InitDetector();
-//_____________________________________________________________________________
-void AliTRDdigitizer::Init()
-{
- //
- // Initializes the digitization procedure with standard values
- //
+ for (iInput = 0; iInput < nInput; iInput++) {
- // The default parameter for the digitization
- fGasGain = 8.0E3;
- fNoise = 3000.;
- fChipGain = 10.;
- fADCoutRange = 255.;
- fADCinRange = 2000.;
- fADCthreshold = 1;
-
- // Transverse and longitudinal diffusion coefficients (Xe/Isobutane)
- fDiffusionOn = 1;
- fDiffusionT = 0.060;
- fDiffusionL = 0.017;
-
- // Propability for electron attachment
- fElAttachOn = 0;
- fElAttachProp = 0.0;
-
- // E x B effects
- fExBOn = 0;
- // omega * tau. (tau ~ 12 * 10^-12, B = 0.2T)
- fOmegaTau = 17.6 * 12.0 * 0.2 * 0.01;
-
- // The pad response function
- fPRFOn = 1;
- fPRFlo = -3.0;
- fPRFhi = 3.0;
- fPRFbin = 1200;
- fPRFwid = (fPRFhi - fPRFlo) / ((Float_t) fPRFbin);
- fPRFpad = ((Int_t) (1.0 / fPRFwid));
- fPRF = new TF1("PRF","[0]*([1]+exp(-x*x/(2.0*[2])))",fPRFlo,fPRFhi);
- fPRF->SetParameter(0, 0.8872);
- fPRF->SetParameter(1,-0.00573);
- fPRF->SetParameter(2, 0.454 * 0.454);
-
- // The drift velocity (cm / mus)
- fDriftVelocity = 1.0;
-
- // The time response function
- fTRFOn = 1;
- Float_t loTRF = -200.0;
- Float_t hiTRF = 1000.0;
- fTRF = new TF1("TRF",TRFlandau,loTRF,hiTRF,3);
- fTRF->SetParameter(0, 1.0 / 24.24249);
- fTRF->SetParameter(1, 0.0);
- fTRF->SetParameter(2, 25.0);
- fTRFbin = 1200;
- fTRFlo = loTRF * fDriftVelocity / 1000.0;
- fTRFhi = hiTRF * fDriftVelocity / 1000.0;
- fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Add input stream %d\n",iInput);
+ }
-}
+ // check if the input tree exists
+ if (!fManager->GetInputTreeTRDS(iInput)) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Input stream %d does not exist\n",iInput);
+ return;
+ }
-//_____________________________________________________________________________
-void AliTRDdigitizer::IntegrateTRF()
-{
- //
- // Integrates the time response function over the time bin size
- //
+ // Read the s-digits via digits manager
+ sdigitsManager = new AliTRDdigitsManager();
+ sdigitsManager->SetDebug(fDebug);
+ sdigitsManager->SetSDigits(kTRUE);
+ sdigitsManager->ReadDigits(fManager->GetInputTreeTRDS(iInput));
- if (fTRFint) delete fTRFint;
- fTRFint = new Float_t[fTRFbin];
- Float_t hiTRF = fTRFhi / fDriftVelocity * 1000.0;
- Float_t loTRF = fTRFlo / fDriftVelocity * 1000.0;
- Float_t timeBin = fGeo->GetTimeBinSize() / fDriftVelocity * 1000.0;
- Float_t binWidth = (hiTRF - loTRF) / ((Float_t) fTRFbin);
- for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
- Float_t bin = iBin * binWidth + loTRF - 0.5 * timeBin;
- fTRFint[iBin] = fTRF->Integral(bin,bin + timeBin);
- }
+ // Add the s-digits to the input list
+ AddSDigitsManager(sdigitsManager);
-}
+ }
-//_____________________________________________________________________________
-void AliTRDdigitizer::SamplePRF()
-{
- //
- // Samples the pad response function
- //
+ // Convert the s-digits to normal digits
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Do the conversion\n");
+ }
+ SDigits2Digits();
- if (fPRFsmp) delete fPRFsmp;
- fPRFsmp = new Float_t[fPRFbin];
- for (Int_t iBin = 0; iBin < fPRFbin; iBin++) {
- Float_t bin = (((Float_t ) iBin) + 0.5) * fPRFwid + fPRFlo;
- fPRFsmp[iBin] = TMath::Max(fPRF->Eval(bin),0.0);
+ // Store the digits
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Write the digits\n");
}
+ fDigitsManager->MakeBranch(fManager->GetTreeDTRD());
+ fDigitsManager->WriteDigits();
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Exec> ");
+ printf("Done\n");
+ }
+
+ DeleteSDigitsManager();
}
//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::Open(const Char_t *name, Int_t nEvent)
+Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
{
//
// Opens a ROOT-file with TRD-hits and reads in the hit-tree
//
// Connect the AliRoot file containing Geometry, Kine, and Hits
- fInputFile = (TFile*) gROOT->GetListOfFiles()->FindObject(name);
+ fInputFile = (TFile *) gROOT->GetListOfFiles()->FindObject(file);
if (!fInputFile) {
- printf("AliTRDdigitizer::Open -- ");
- printf("Open the ALIROOT-file %s.\n",name);
- fInputFile = new TFile(name,"UPDATE");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Open> ");
+ printf("Open the AliROOT-file %s.\n",file);
+ }
+ fInputFile = new TFile(file,"UPDATE");
}
else {
- printf("AliTRDdigitizer::Open -- ");
- printf("%s is already open.\n",name);
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Open> ");
+ printf("%s is already open.\n",file);
+ }
}
- gAlice = (AliRun*) fInputFile->Get("gAlice");
+ gAlice = (AliRun *) fInputFile->Get("gAlice");
if (gAlice) {
- printf("AliTRDdigitizer::Open -- ");
- printf("AliRun object found on file.\n");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::Open> ");
+ printf("AliRun object found on file.\n");
+ }
}
else {
- printf("AliTRDdigitizer::Open -- ");
+ printf("<AliTRDdigitizer::Open> ");
printf("Could not find AliRun object.\n");
return kFALSE;
}
// Import the Trees for the event nEvent in the file
Int_t nparticles = gAlice->GetEvent(fEvent);
if (nparticles <= 0) {
- printf("AliTRDdigitizer::Open -- ");
+ printf("<AliTRDdigitizer::Open> ");
printf("No entries in the trees for event %d.\n",fEvent);
return kFALSE;
}
- return InitDetector();
+ if (InitDetector()) {
+ return MakeBranch();
+ }
+ else {
+ return kFALSE;
+ }
}
//
// Get the pointer to the detector class and check for version 1
- fTRD = (AliTRD*) gAlice->GetDetector("TRD");
+ fTRD = (AliTRD *) gAlice->GetDetector("TRD");
+ if (!fTRD) {
+ printf("<AliTRDdigitizer::InitDetector> ");
+ printf("No TRD module found\n");
+ exit(1);
+ }
if (fTRD->IsVersion() != 1) {
- printf("AliTRDdigitizer::Open -- ");
+ printf("<AliTRDdigitizer::InitDetector> ");
printf("TRD must be version 1 (slow simulator).\n");
exit(1);
}
// Get the geometry
fGeo = fTRD->GetGeometry();
- printf("AliTRDdigitizer::Open -- ");
- printf("Geometry version %d\n",fGeo->IsVersion());
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::InitDetector> ");
+ printf("Geometry version %d\n",fGeo->IsVersion());
+ }
+
+ // Create a digits manager
+ fDigitsManager = new AliTRDdigitsManager();
+ fDigitsManager->SetSDigits(fSDigits);
+ fDigitsManager->CreateArrays();
+ fDigitsManager->SetEvent(fEvent);
+ fDigitsManager->SetDebug(fDebug);
+
+ // The list for the input s-digits manager to be merged
+ fSDigitsManagerList = new TList();
return kTRUE;
}
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::MakeBranch(const Char_t *file) const
+{
+ //
+ // Create the branches for the digits array
+ //
+
+ return fDigitsManager->MakeBranch(file);
+
+}
+
//_____________________________________________________________________________
Bool_t AliTRDdigitizer::MakeDigits()
{
//
- // Loops through the TRD-hits and creates the digits.
+ // Creates digits.
//
///////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////
// Converts number of electrons to fC
- const Float_t kEl2fC = 1.602E-19 * 1.0E15;
+ const Double_t kEl2fC = 1.602E-19 * 1.0E15;
///////////////////////////////////////////////////////////////
// Number of track dictionary arrays
const Int_t kNDict = AliTRDdigitsManager::kNDict;
+ // Half the width of the amplification region
+ const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.;
+
Int_t iRow, iCol, iTime, iPad;
Int_t iDict = 0;
Int_t nBytes = 0;
Int_t totalSizeDict1 = 0;
Int_t totalSizeDict2 = 0;
+ Int_t timeTRDbeg = 0;
+ Int_t timeTRDend = 1;
+
+ Float_t pos[3];
+ Float_t rot[3];
+ Float_t xyz[3];
+ Float_t padSignal[kNpad];
+ Float_t signalOld[kNpad];
+
AliTRDdataArrayF *signals = 0;
AliTRDdataArrayI *digits = 0;
AliTRDdataArrayI *dictionary[kNDict];
- // Create a digits manager
- fDigits = new AliTRDdigitsManager();
+ // Create a default parameter class if none is defined
+ if (!fPar) {
+ fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Create the default parameter object\n");
+ }
+ }
// Create a container for the amplitudes
AliTRDsegmentArray *signalsArray
- = new AliTRDsegmentArray("AliTRDdataArrayF",AliTRDgeometry::Ndet());
+ = new AliTRDsegmentArray("AliTRDdataArrayF"
+ ,AliTRDgeometry::Ndet());
+
+ if (fPar->TRFOn()) {
+ timeTRDbeg = ((Int_t) (-fPar->GetTRFlo() / fPar->GetTimeBinSize())) - 1;
+ timeTRDend = ((Int_t) ( fPar->GetTRFhi() / fPar->GetTimeBinSize())) - 1;
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Sample the TRF between -%d and %d\n",timeTRDbeg,timeTRDend);
+ }
+ }
+
+ Float_t elAttachProp = fPar->GetElAttachProp() / 100.;
if (!fGeo) {
- printf("AliTRDdigitizer::MakeDigits -- ");
+ printf("<AliTRDdigitizer::MakeDigits> ");
printf("No geometry defined\n");
return kFALSE;
}
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Start creating digits.\n");
- if (fVerbose > 0) this->Dump();
-
- // The Lorentz factor
- if (fExBOn) {
- fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
- }
- else {
- fLorentzFactor = 1.0;
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Start creating digits.\n");
}
- // Create the sampled PRF
- SamplePRF();
-
- // Create the integrated TRF
- IntegrateTRF();
-
// Get the pointer to the hit tree
- TTree *HitTree = gAlice->TreeH();
+ TTree *hitTree = gAlice->TreeH();
// Get the number of entries in the hit tree
// (Number of primary particles creating a hit somewhere)
- Int_t nTrack = (Int_t) HitTree->GetEntries();
- if (fVerbose > 0) {
- printf("AliTRDdigitizer::MakeDigits -- ");
+ Int_t nTrack = (Int_t) hitTree->GetEntries();
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
printf("Found %d primary particles\n",nTrack);
}
for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) {
gAlice->ResetHits();
- nBytes += HitTree->GetEvent(iTrack);
-
- // Get the number of hits in the TRD created by this particle
- Int_t nHit = fTRD->Hits()->GetEntriesFast();
- if (fVerbose > 0) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Found %d hits for primary particle %d\n",nHit,iTrack);
- }
-
- // Loop through the TRD hits
- for (Int_t iHit = 0; iHit < nHit; iHit++) {
+ nBytes += hitTree->GetEvent(iTrack);
+ // Loop through the TRD hits
+ Int_t iHit = 0;
+ AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
+ while (hit) {
+
countHits++;
-
- AliTRDhit *hit = (AliTRDhit *) fTRD->Hits()->UncheckedAt(iHit);
- Float_t pos[3];
- pos[0] = hit->X();
- pos[1] = hit->Y();
- pos[2] = hit->Z();
- Float_t q = hit->GetCharge();
- Int_t track = hit->Track();
- Int_t detector = hit->GetDetector();
- Int_t plane = fGeo->GetPlane(detector);
- Int_t sector = fGeo->GetSector(detector);
- Int_t chamber = fGeo->GetChamber(detector);
-
- if (!(CheckDetector(plane,chamber,sector))) continue;
-
- Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector);
- Int_t nColMax = fGeo->GetColMax(plane);
- Int_t nTimeMax = fGeo->GetTimeMax();
- Float_t row0 = fGeo->GetRow0(plane,chamber,sector);
- Float_t col0 = fGeo->GetCol0(plane);
- Float_t time0 = fGeo->GetTime0(plane);
- Float_t rowPadSize = fGeo->GetRowPadSize(plane,chamber,sector);
- Float_t colPadSize = fGeo->GetColPadSize(plane);
- Float_t timeBinSize = fGeo->GetTimeBinSize();
-
- if (fVerbose > 1) {
+ iHit++;
+
+ pos[0] = hit->X();
+ pos[1] = hit->Y();
+ pos[2] = hit->Z();
+ Float_t q = hit->GetCharge();
+ Int_t track = hit->Track();
+ Int_t detector = hit->GetDetector();
+ Int_t plane = fGeo->GetPlane(detector);
+ Int_t sector = fGeo->GetSector(detector);
+ Int_t chamber = fGeo->GetChamber(detector);
+ Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
+ Int_t nColMax = fPar->GetColMax(plane);
+ Int_t nTimeMax = fPar->GetTimeMax();
+ Int_t nTimeBefore = fPar->GetTimeBefore();
+ Int_t nTimeAfter = fPar->GetTimeAfter();
+ Int_t nTimeTotal = fPar->GetTimeTotal();
+ Float_t row0 = fPar->GetRow0(plane,chamber,sector);
+ Float_t col0 = fPar->GetCol0(plane);
+ Float_t time0 = fPar->GetTime0(plane);
+ Float_t rowPadSize = fPar->GetRowPadSize(plane,chamber,sector);
+ Float_t colPadSize = fPar->GetColPadSize(plane);
+ Float_t timeBinSize = fPar->GetTimeBinSize();
+ Float_t divideRow = 1.0 / rowPadSize;
+ Float_t divideCol = 1.0 / colPadSize;
+ Float_t divideTime = 1.0 / timeBinSize;
+
+ if (fDebug > 1) {
printf("Analyze hit no. %d ",iHit);
printf("-----------------------------------------------------------\n");
hit->Dump();
,plane,sector,chamber);
printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n"
,nRowMax,nColMax,nTimeMax);
+ printf("nTimeBefore = %d, nTimeAfter = %d, nTimeTotal = %d\n"
+ ,nTimeBefore,nTimeAfter,nTimeTotal);
printf("row0 = %f, col0 = %f, time0 = %f\n"
,row0,col0,time0);
printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n"
,rowPadSize,colPadSize,timeBinSize);
}
- // Don't analyze test hits with amplitude 0.
- if (((Int_t) q) == 0) continue;
+ // Don't analyze test hits and switched off detectors
+ if ((CheckDetector(plane,chamber,sector)) &&
+ (((Int_t) q) != 0)) {
- if (detector != detectorOld) {
+ if (detector != detectorOld) {
- if (fVerbose > 1) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Get new container. New det = %d, Old det = %d\n"
- ,detector,detectorOld);
- }
- // Compress the old one if enabled
- if ((fCompress) && (detectorOld > -1)) {
- if (fVerbose > 1) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Compress the old container ...");
- }
- signals->Compress(1,0);
- for (iDict = 0; iDict < kNDict; iDict++) {
- dictionary[iDict]->Compress(1,0);
- }
- if (fVerbose > 1) printf("done\n");
- }
- // Get the new container
- signals = (AliTRDdataArrayF *) signalsArray->At(detector);
- if (signals->GetNtime() == 0) {
- // Allocate a new one if not yet existing
- if (fVerbose > 1) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Allocate a new container ... ");
+ if (fDebug > 1) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Get new container. New det = %d, Old det = %d\n"
+ ,detector,detectorOld);
}
- signals->Allocate(nRowMax,nColMax,nTimeMax);
- }
- else {
- // Expand an existing one
- if (fCompress) {
- if (fVerbose > 1) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Expand an existing container ... ");
+ // Compress the old one if enabled
+ if ((fCompress) && (detectorOld > -1)) {
+ if (fDebug > 1) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Compress the old container ...");
+ }
+ signals->Compress(1,0);
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionary[iDict]->Compress(1,0);
}
- signals->Expand();
+ if (fDebug > 1) printf("done\n");
}
- }
- // The same for the dictionary
- for (iDict = 0; iDict < kNDict; iDict++) {
- dictionary[iDict] = fDigits->GetDictionary(detector,iDict);
- if (dictionary[iDict]->GetNtime() == 0) {
- dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeMax);
+ // Get the new container
+ signals = (AliTRDdataArrayF *) signalsArray->At(detector);
+ if (signals->GetNtime() == 0) {
+ // Allocate a new one if not yet existing
+ if (fDebug > 1) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Allocate a new container ... ");
+ }
+ signals->Allocate(nRowMax,nColMax,nTimeTotal);
}
else {
- if (fCompress) dictionary[iDict]->Expand();
+ // Expand an existing one
+ if (fCompress) {
+ if (fDebug > 1) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Expand an existing container ... ");
+ }
+ signals->Expand();
+ }
}
- }
- if (fVerbose > 1) printf("done\n");
- detectorOld = detector;
- }
-
- // Rotate the sectors on top of each other
- Float_t rot[3];
- fGeo->Rotate(detector,pos,rot);
-
- // The driftlength
- Float_t driftlength = time0 - rot[0];
- if ((driftlength < 0) ||
- (driftlength > AliTRDgeometry::DrThick())) continue;
- Float_t driftlengthL = driftlength;
- if (fExBOn) driftlengthL /= TMath::Sqrt(fLorentzFactor);
-
- // The hit position in pad coordinates (center pad)
- // The pad row (z-direction)
- Int_t rowH = (Int_t) ((rot[2] - row0) / rowPadSize);
- // The pad column (rphi-direction)
- Int_t colH = (Int_t) ((rot[1] - col0) / colPadSize);
- // The time bucket
- Int_t timeH = (Int_t) (driftlength / timeBinSize);
- if (fVerbose > 1) {
- printf("rowH = %d, colH = %d, timeH = %d\n"
- ,rowH,colH,timeH);
- }
-
- // Loop over all electrons of this hit
- // TR photons produce hits with negative charge
- Int_t nEl = ((Int_t) TMath::Abs(q));
- for (Int_t iEl = 0; iEl < nEl; iEl++) {
-
- Float_t xyz[3];
- xyz[0] = rot[0];
- xyz[1] = rot[1];
- xyz[2] = rot[2];
-
- // Electron attachment
- if (fElAttachOn) {
- if (gRandom->Rndm() < (driftlengthL * fElAttachProp / 100.))
- continue;
+ // The same for the dictionary
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict);
+ if (dictionary[iDict]->GetNtime() == 0) {
+ dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+ else {
+ if (fCompress) dictionary[iDict]->Expand();
+ }
+ }
+ if (fDebug > 1) printf("done\n");
+ detectorOld = detector;
}
- // Apply the diffusion smearing
- if (fDiffusionOn) {
- if (!(Diffusion(driftlengthL,xyz))) continue;
- }
-
- // Apply E x B effects
- if (fExBOn) {
- if (!(ExB(driftlength,xyz))) continue;
- }
-
- // The electron position
- // The pad row (z-direction)
- Int_t rowE = (Int_t) ((xyz[2] - row0) / rowPadSize);
- // The pad column (rphi-direction)
- Int_t colE = (Int_t) ((xyz[1] - col0) / colPadSize);
- // The time bucket
- Int_t timeE = (Int_t) ((time0 - xyz[0]) / timeBinSize);
-
- if (( rowE < 0) || ( rowE >= nRowMax)) continue;
- if (( colE < 0) || ( colE >= nColMax)) continue;
- if ((timeE < 0) || (timeE >= nTimeMax)) continue;
-
- // Apply the gas gain including fluctuations
- Float_t ggRndm = 0.0;
- do {
- ggRndm = gRandom->Rndm();
- } while (ggRndm <= 0);
- Int_t signal = (Int_t) (-fGasGain * TMath::Log(ggRndm));
-
- if (fVerbose > 2) {
- printf(" electron no. %d, signal = %d\n",iEl,signal);
- printf(" rowE = %d, colE = %d, timeE = %d\n"
- ,rowE,colE,timeE);
- }
+ // Rotate the sectors on top of each other
+ fGeo->Rotate(detector,pos,rot);
+
+ // The driftlength. It is negative if the hit is in the
+ // amplification region.
+ Float_t driftlength = time0 - rot[0];
+
+ // Take also the drift in the amplification region into account
+ // The drift length is at the moment still the same, regardless of
+ // the position relativ to the wire. This non-isochronity needs still
+ // to be implemented.
+ Float_t driftlengthL = TMath::Abs(driftlength + kAmWidth);
+ if (fPar->ExBOn()) driftlengthL /= TMath::Sqrt(fPar->GetLorentzFactor());
+
+ // Loop over all electrons of this hit
+ // TR photons produce hits with negative charge
+ Int_t nEl = ((Int_t) TMath::Abs(q));
+ for (Int_t iEl = 0; iEl < nEl; iEl++) {
+
+ xyz[0] = rot[0];
+ xyz[1] = rot[1];
+ xyz[2] = rot[2];
+
+ // Electron attachment
+ if (fPar->ElAttachOn()) {
+ if (gRandom->Rndm() < (driftlengthL * elAttachProp))
+ continue;
+ }
- // Apply the pad response
- Float_t padSignal[kNpad];
- if (fPRFOn) {
- // The distance of the electron to the center of the pad
- // in units of pad width
- Float_t dist = (xyz[1] - col0 - (colE + 0.5) * colPadSize)
- / colPadSize;
- if (!(PadResponse(signal,dist,padSignal))) continue;
- }
- else {
- padSignal[0] = 0.0;
- padSignal[1] = signal;
- padSignal[2] = 0.0;
- }
+ // Apply the diffusion smearing
+ if (fPar->DiffusionOn()) {
+ if (!(fPar->Diffusion(driftlengthL,xyz))) continue;
+ }
- // The distance of the position to the beginning of the timebin
- Float_t timeOffset = (time0 - timeE * timeBinSize) - xyz[0];
- Int_t timeTRDbeg = 0;
- Int_t timeTRDend = 1;
- if (fTRFOn) {
- timeTRDbeg = 2;
- timeTRDend = 11;
- }
- for (Int_t iTimeBin = TMath::Max(timeE - timeTRDbeg, 0)
- ; iTimeBin < TMath::Min(timeE + timeTRDend,nTimeMax)
- ; iTimeBin++) {
-
- // Apply the time response
- Float_t timeResponse = 1.0;
- if (fTRFOn) {
- Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset;
- timeResponse = TimeResponse(time);
+ // Apply E x B effects (depends on drift direction)
+ if (fPar->ExBOn()) {
+ if (!(fPar->ExB(driftlength+kAmWidth,xyz))) continue;
}
- // Add the signals
- Float_t signalOld[kNpad] = { 0.0, 0.0, 0.0 };
- for (iPad = 0; iPad < kNpad; iPad++) {
- Int_t colPos = colE + iPad - 1;
- if (colPos < 0) continue;
- if (colPos >= nColMax) break;
- signalOld[iPad] = signals->GetData(rowE,colPos,iTimeBin);
- signalOld[iPad] += padSignal[iPad] * timeResponse;
- signals->SetData(rowE,colPos,iTimeBin,signalOld[iPad]);
+ // The electron position after diffusion and ExB in pad coordinates
+ // The pad row (z-direction)
+ Float_t rowDist = xyz[2] - row0;
+ Int_t rowE = ((Int_t) (rowDist * divideRow));
+ if ((rowE < 0) || (rowE >= nRowMax)) continue;
+ Float_t rowOffset = ((((Float_t) rowE) + 0.5) * rowPadSize) - rowDist;
+
+ // The pad column (rphi-direction)
+ Float_t col0tilt = fPar->Col0Tilted(col0,rowOffset,plane);
+ Float_t colDist = xyz[1] - col0tilt;
+ Int_t colE = ((Int_t) (colDist * divideCol));
+ if ((colE < 0) || (colE >= nColMax)) continue;
+ Float_t colOffset = ((((Float_t) colE) + 0.5) * colPadSize) - colDist;
+
+ // The time bin (negative for hits in the amplification region)
+ // In the amplification region the electrons drift from both sides
+ // to the middle (anode wire plane)
+ Float_t timeDist = time0 - xyz[0];
+ Float_t timeOffset = 0;
+ Int_t timeE = 0;
+ if (timeDist > 0) {
+ // The time bin
+ timeE = ((Int_t) (timeDist * divideTime));
+ // The distance of the position to the middle of the timebin
+ timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) - timeDist;
+ }
+ else {
+ // Difference between half of the amplification gap width and
+ // the distance to the anode wire
+ Float_t anodeDist = kAmWidth - TMath::Abs(timeDist + kAmWidth);
+ // The time bin
+ timeE = -1 * (((Int_t ) (anodeDist * divideTime)) + 1);
+ // The distance of the position to the middle of the timebin
+ timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) + anodeDist;
+ }
+
+ // Apply the gas gain including fluctuations
+ Float_t ggRndm = 0.0;
+ do {
+ ggRndm = gRandom->Rndm();
+ } while (ggRndm <= 0);
+ Int_t signal = (Int_t) (-fPar->GetGasGain() * TMath::Log(ggRndm));
+
+ // Apply the pad response
+ if (fPar->PRFOn()) {
+ // The distance of the electron to the center of the pad
+ // in units of pad width
+ Float_t dist = - colOffset * divideCol;
+ if (!(fPar->PadResponse(signal,dist,plane,padSignal))) continue;
}
- if (fVerbose > 3) {
- printf(" iTimeBin = %d, timeResponse = %f\n"
- ,iTimeBin,timeResponse);
- printf(" pad-signal = %f, %f, %f\n"
- ,signalOld[0],signalOld[1],signalOld[2]);
+ else {
+ padSignal[0] = 0.0;
+ padSignal[1] = signal;
+ padSignal[2] = 0.0;
}
- // Store the track index in the dictionary
- // Note: We store index+1 in order to allow the array to be compressed
- //for (iDict = 0; iDict < kNDict; iDict++) {
- // Int_t oldTrack = dictionary[iDict]->GetData(rowE,colE,timeE);
- // if (oldTrack == track+1) break;
- // //if (oldTrack == -1) break;
- // if (oldTrack == 0) {
- // dictionary[iDict]->SetData(rowE,colE,timeE,track+1);
- // if (fVerbose > 3) {
- // printf(" track index = %d\n",track);
- // }
- // break;
- // }
- //}
- for (iPad = 0; iPad < kNpad; iPad++) {
- Int_t colPos = colE + iPad - 1;
- if (colPos < 0) continue;
- if (colPos >= nColMax) break;
- if (signals->GetData(rowE,colPos,iTimeBin) > 0) {
- for (iDict = 0; iDict < kNDict; iDict++) {
- Int_t oldTrack = dictionary[iDict]->GetData(rowE,colPos,iTimeBin);
- if (oldTrack == track+1) break;
- //if (oldTrack == -1) break;
- if (oldTrack == 0) {
- dictionary[iDict]->SetData(rowE,colPos,iTimeBin,track+1);
- if (fVerbose > 3) {
- printf(" track index = %d\n",track);
+ // Sample the time response inside the drift region
+ // + additional time bins before and after.
+ // The sampling is done always in the middle of the time bin
+ for (Int_t iTimeBin = TMath::Max(timeE-timeTRDbeg, -nTimeBefore)
+ ;iTimeBin < TMath::Min(timeE+timeTRDend,nTimeMax+nTimeAfter )
+ ;iTimeBin++) {
+
+ // Apply the time response
+ Float_t timeResponse = 1.0;
+ Float_t crossTalk = 0.0;
+ Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset;
+ if (fPar->TRFOn()) {
+ timeResponse = fPar->TimeResponse(time);
+ }
+ if (fPar->CTOn()) {
+ crossTalk = fPar->CrossTalk(time);
+ }
+
+ signalOld[0] = 0.0;
+ signalOld[1] = 0.0;
+ signalOld[2] = 0.0;
+
+ for (iPad = 0; iPad < kNpad; iPad++) {
+
+ Int_t colPos = colE + iPad - 1;
+ if (colPos < 0) continue;
+ if (colPos >= nColMax) break;
+
+ // Add the signals
+ // Note: The time bin number is shifted by nTimeBefore to avoid negative
+ // time bins. This has to be subtracted later.
+ Int_t iCurrentTimeBin = iTimeBin + nTimeBefore;
+ signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin);
+ if( colPos != colE ) {
+ signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk);
+ }
+ else {
+ signalOld[iPad] += padSignal[iPad] * timeResponse;
+ }
+ signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]);
+
+ // Store the track index in the dictionary
+ // Note: We store index+1 in order to allow the array to be compressed
+ if (signalOld[iPad] > 0) {
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE
+ ,colPos
+ ,iCurrentTimeBin);
+ if (oldTrack == track+1) break;
+ if (oldTrack == 0) {
+ dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1);
+ break;
}
- break;
}
}
- }
- }
- if ((fVerbose > 1) && (iDict == kNDict)) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("More than three tracks for one digit!\n");
- }
- }
+ } // Loop: pads
- }
+ } // Loop: time bins
- }
+ } // Loop: electrons of a single hit
+
+ } // If: detector and test hit
+
+ hit = (AliTRDhit *) fTRD->NextHit();
+
+ } // Loop: hits of one primary track
+
+ } // Loop: primary tracks
- } // All hits finished
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Finished analyzing %d hits\n",countHits);
+ }
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Finished analyzing %d hits\n",countHits);
+ // The total conversion factor
+ Float_t convert = kEl2fC * fPar->GetPadCoupling()
+ * fPar->GetTimeCoupling()
+ * fPar->GetChipGain();
// Loop through all chambers to finalize the digits
for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
- Int_t plane = fGeo->GetPlane(iDet);
- Int_t sector = fGeo->GetSector(iDet);
- Int_t chamber = fGeo->GetChamber(iDet);
- Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector);
- Int_t nColMax = fGeo->GetColMax(plane);
- Int_t nTimeMax = fGeo->GetTimeMax();
+ Int_t plane = fGeo->GetPlane(iDet);
+ Int_t sector = fGeo->GetSector(iDet);
+ Int_t chamber = fGeo->GetChamber(iDet);
+ Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
+ Int_t nColMax = fPar->GetColMax(plane);
+ Int_t nTimeMax = fPar->GetTimeMax();
+ Int_t nTimeTotal = fPar->GetTimeTotal();
+
+ Double_t *inADC = new Double_t[nTimeTotal];
+ Double_t *outADC = new Double_t[nTimeTotal];
- //if (!(CheckDetector(plane,chamber,sector))) continue;
- if (fVerbose > 0) {
- printf("AliTRDdigitizer::MakeDigits -- ");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
printf("Digitization for chamber %d\n",iDet);
}
// Add a container for the digits of this detector
- digits = fDigits->GetDigits(iDet);
+ digits = fDigitsManager->GetDigits(iDet);
// Allocate memory space for the digits buffer
- digits->Allocate(nRowMax,nColMax,nTimeMax);
+ digits->Allocate(nRowMax,nColMax,nTimeTotal);
// Get the signal container
signals = (AliTRDdataArrayF *) signalsArray->At(iDet);
if (signals->GetNtime() == 0) {
// Create missing containers
- signals->Allocate(nRowMax,nColMax,nTimeMax);
+ signals->Allocate(nRowMax,nColMax,nTimeTotal);
}
else {
// Expand the container if neccessary
}
// Create the missing dictionary containers
for (iDict = 0; iDict < kNDict; iDict++) {
- dictionary[iDict] = fDigits->GetDictionary(iDet,iDict);
+ dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
if (dictionary[iDict]->GetNtime() == 0) {
- dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeMax);
+ dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
}
}
Int_t nDigits = 0;
- // Create the digits for this chamber
- for (iRow = 0; iRow < nRowMax; iRow++ ) {
- for (iCol = 0; iCol < nColMax; iCol++ ) {
- for (iTime = 0; iTime < nTimeMax; iTime++) {
+ // Don't create noise in detectors that are switched off
+ if (CheckDetector(plane,chamber,sector)) {
- Float_t signalAmp = signals->GetData(iRow,iCol,iTime);
+ // Create the digits for this chamber
+ for (iRow = 0; iRow < nRowMax; iRow++ ) {
+ for (iCol = 0; iCol < nColMax; iCol++ ) {
+
+ // Create summable digits
+ if (fSDigits) {
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+ Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
+ signalAmp *= fSDigitsScale;
+ signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9);
+ Int_t adc = (Int_t) signalAmp;
+ if (adc > 0) nDigits++;
+ digits->SetDataUnchecked(iRow,iCol,iTime,adc);
+ }
- // Add the noise
- signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fNoise),0.0);
- // Convert to fC
- signalAmp *= kEl2fC;
- // Convert to mV
- signalAmp *= fChipGain;
- // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
- // signal is larger than fADCinRange
- Int_t adc = 0;
- if (signalAmp >= fADCinRange) {
- adc = ((Int_t) fADCoutRange);
}
+ // Create normal digits
else {
- adc = ((Int_t) (signalAmp * (fADCoutRange / fADCinRange)));
- }
- // Store the amplitude of the digit if above threshold
- if (adc > fADCthreshold) {
- if (fVerbose > 2) {
- printf(" iRow = %d, iCol = %d, iTime = %d\n"
- ,iRow,iCol,iTime);
- printf(" signal = %f, adc = %d\n",signalAmp,adc);
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+ Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
+ // Add the noise
+ signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fPar->GetNoise()),0.0);
+ // Convert to mV
+ signalAmp *= convert;
+ // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
+ // signal is larger than fADCinRange
+ Int_t adc = 0;
+ if (signalAmp >= fPar->GetADCinRange()) {
+ adc = ((Int_t) fPar->GetADCoutRange());
+ }
+ else {
+ adc = ((Int_t) (signalAmp * (fPar->GetADCoutRange()
+ / fPar->GetADCinRange())));
+ }
+ inADC[iTime] = adc;
+ outADC[iTime] = adc;
}
- nDigits++;
- digits->SetData(iRow,iCol,iTime,adc);
+
+ // Apply the tail cancelation via the digital filter
+ if (fPar->TCOn()) {
+ DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp());
+ }
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+ // Store the amplitude of the digit if above threshold
+ if (outADC[iTime] > fPar->GetADCthreshold()) {
+ if (fDebug > 2) {
+ printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n"
+ ,iRow,iCol,iTime,outADC[iTime]);
+ }
+ nDigits++;
+ digits->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]);
+ }
+ }
+
}
- }
+ }
}
+
}
// Compress the arrays
totalSizeDict2 += dictionary[2]->GetSize();
Float_t nPixel = nRowMax * nColMax * nTimeMax;
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Found %d digits in detector %d (%3.0f).\n"
- ,nDigits,iDet
- ,100.0 * ((Float_t) nDigits) / nPixel);
-
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Found %d digits in detector %d (%3.0f).\n"
+ ,nDigits,iDet
+ ,100.0 * ((Float_t) nDigits) / nPixel);
+ }
+
if (fCompress) signals->Compress(1,0);
+ delete [] inADC;
+ delete [] outADC;
+
+ }
+
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Total number of analyzed hits = %d\n",countHits);
+ printf("<AliTRDdigitizer::MakeDigits> ");
+ printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits
+ ,totalSizeDict0
+ ,totalSizeDict1
+ ,totalSizeDict2);
+ }
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
+{
+ //
+ // Add a digits manager for s-digits to the input list.
+ //
+
+ fSDigitsManagerList->Add(man);
+
+}
+
+//_____________________________________________________________________________
+void AliTRDdigitizer::DeleteSDigitsManager()
+{
+ //
+ // Removes digits manager from the input list.
+ //
+
+ fSDigitsManagerList->Delete();
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::ConvertSDigits()
+{
+ //
+ // Converts s-digits to normal digits
+ //
+
+ // Number of track dictionary arrays
+ const Int_t kNDict = AliTRDdigitsManager::kNDict;
+
+ // Converts number of electrons to fC
+ const Double_t kEl2fC = 1.602E-19 * 1.0E15;
+
+ Int_t iDict = 0;
+ Int_t iRow;
+ Int_t iCol;
+ Int_t iTime;
+
+ if (!fPar) {
+ fPar = new AliTRDparameter("TRDparameter","Standard parameter");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::ConvertSDigits> ");
+ printf("Create the default parameter object\n");
+ }
+ }
+
+ Double_t sDigitsScale = 1.0 / GetSDigitsScale();
+ Double_t noise = fPar->GetNoise();
+ Double_t padCoupling = fPar->GetPadCoupling();
+ Double_t timeCoupling = fPar->GetTimeCoupling();
+ Double_t chipGain = fPar->GetChipGain();
+ Double_t convert = kEl2fC * padCoupling * timeCoupling * chipGain;;
+ Double_t adcInRange = fPar->GetADCinRange();
+ Double_t adcOutRange = fPar->GetADCoutRange();
+ Int_t adcThreshold = fPar->GetADCthreshold();
+
+ AliTRDdataArrayI *digitsIn;
+ AliTRDdataArrayI *digitsOut;
+ AliTRDdataArrayI *dictionaryIn[kNDict];
+ AliTRDdataArrayI *dictionaryOut[kNDict];
+
+ // Loop through the detectors
+ for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
+
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::ConvertSDigits> ");
+ printf("Convert detector %d to digits.\n",iDet);
+ }
+
+ Int_t plane = fGeo->GetPlane(iDet);
+ Int_t sector = fGeo->GetSector(iDet);
+ Int_t chamber = fGeo->GetChamber(iDet);
+ Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
+ Int_t nColMax = fPar->GetColMax(plane);
+ Int_t nTimeTotal = fPar->GetTimeTotal();
+
+ Double_t *inADC = new Double_t[nTimeTotal];
+ Double_t *outADC = new Double_t[nTimeTotal];
+
+ digitsIn = fSDigitsManager->GetDigits(iDet);
+ digitsIn->Expand();
+ digitsOut = fDigitsManager->GetDigits(iDet);
+ digitsOut->Allocate(nRowMax,nColMax,nTimeTotal);
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
+ dictionaryIn[iDict]->Expand();
+ dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
+ dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+
+ for (iRow = 0; iRow < nRowMax; iRow++ ) {
+ for (iCol = 0; iCol < nColMax; iCol++ ) {
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+ Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime);
+ signal *= sDigitsScale;
+ // Add the noise
+ signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),0.0);
+ // Convert to mV
+ signal *= convert;
+ // Convert to ADC counts. Set the overflow-bit adcOutRange if the
+ // signal is larger than adcInRange
+ Int_t adc = 0;
+ if (signal >= adcInRange) {
+ adc = ((Int_t) adcOutRange);
+ }
+ else {
+ adc = ((Int_t) (signal * (adcOutRange / adcInRange)));
+ }
+ inADC[iTime] = adc;
+ outADC[iTime] = adc;
+ }
+
+ // Apply the tail cancelation via the digital filter
+ if (fPar->TCOn()) {
+ DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp());
+ }
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+ // Store the amplitude of the digit if above threshold
+ if (outADC[iTime] > adcThreshold) {
+ digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]);
+ // Copy the dictionary
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime);
+ dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track);
+ }
+ }
+ }
+
+ }
+ }
+
+ if (fCompress) {
+ digitsIn->Compress(1,0);
+ digitsOut->Compress(1,0);
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryIn[iDict]->Compress(1,0);
+ dictionaryOut[iDict]->Compress(1,0);
+ }
+ }
+
+ delete [] inADC;
+ delete [] outADC;
+
+ }
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::MergeSDigits()
+{
+ //
+ // Merges the input s-digits:
+ // - The amplitude of the different inputs are summed up.
+ // - Of the track IDs from the input dictionaries only one is
+ // kept for each input. This works for maximal 3 different merged inputs.
+ //
+
+ // Number of track dictionary arrays
+ const Int_t kNDict = AliTRDdigitsManager::kNDict;
+
+ if (!fPar) {
+ fPar = new AliTRDparameter("TRDparameter","Standard parameter");
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MergeSDigits> ");
+ printf("Create the default parameter object\n");
+ }
}
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Total number of analyzed hits = %d\n",countHits);
+ Int_t iDict = 0;
+ Int_t jDict = 0;
+
+ AliTRDdataArrayI *digitsA;
+ AliTRDdataArrayI *digitsB;
+ AliTRDdataArrayI *dictionaryA[kNDict];
+ AliTRDdataArrayI *dictionaryB[kNDict];
+
+ // Get the first s-digits
+ fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
+ if (!fSDigitsManager) return kFALSE;
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits
- ,totalSizeDict0
- ,totalSizeDict1
- ,totalSizeDict2);
+ // Loop through the other sets of s-digits
+ AliTRDdigitsManager *mergeSDigitsManager;
+ mergeSDigitsManager = (AliTRDdigitsManager *)
+ fSDigitsManagerList->After(fSDigitsManager);
+
+ if (fDebug > 0) {
+ if (mergeSDigitsManager) {
+ printf("<AliTRDdigitizer::MergeSDigits> ");
+ printf("Merge %d input files.\n",fSDigitsManagerList->GetSize());
+ }
+ else {
+ printf("<AliTRDdigitizer::MergeSDigits> ");
+ printf("Only one input file.\n");
+ }
+ }
+
+ Int_t iMerge = 0;
+ while (mergeSDigitsManager) {
+
+ iMerge++;
+
+ // Loop through the detectors
+ for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
+
+ Int_t plane = fGeo->GetPlane(iDet);
+ Int_t sector = fGeo->GetSector(iDet);
+ Int_t chamber = fGeo->GetChamber(iDet);
+ Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
+ Int_t nColMax = fPar->GetColMax(plane);
+ Int_t nTimeTotal = fPar->GetTimeTotal();
+
+ // Loop through the pixels of one detector and add the signals
+ digitsA = fSDigitsManager->GetDigits(iDet);
+ digitsB = mergeSDigitsManager->GetDigits(iDet);
+ digitsA->Expand();
+ digitsB->Expand();
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
+ dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict);
+ dictionaryA[iDict]->Expand();
+ dictionaryB[iDict]->Expand();
+ }
+
+ // Merge only detectors that contain a signal
+ Bool_t doMerge = kTRUE;
+ if (fMergeSignalOnly) {
+ if (digitsA->GetOverThreshold(0) == 0) {
+ doMerge = kFALSE;
+ }
+ }
+
+ if (doMerge) {
+
+ if (fDebug > 0) {
+ printf("<AliTRDdigitizer::MergeSDigits> ");
+ printf("Merge detector %d of input no.%d\n",iDet,iMerge+1);
+ }
+
+ for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
+ for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
+ for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
+
+ // Add the amplitudes of the summable digits
+ Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
+ Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
+ ampA += ampB;
+ digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
+
+ // Add the mask to the track id if defined.
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
+ if ((fMasks) && (trackB > 0)) {
+ for (jDict = 0; jDict < kNDict; jDict++) {
+ Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
+ if (trackA == 0) {
+ trackA = trackB + fMasks[iMerge];
+ dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
+ }
+ }
+ }
+ }
+
+ }
+ }
+ }
+
+ }
+
+ if (fCompress) {
+ digitsA->Compress(1,0);
+ digitsB->Compress(1,0);
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryA[iDict]->Compress(1,0);
+ dictionaryB[iDict]->Compress(1,0);
+ }
+ }
+
+ }
+
+ // The next set of s-digits
+ mergeSDigitsManager = (AliTRDdigitsManager *)
+ fSDigitsManagerList->After(mergeSDigitsManager);
+
+ }
return kTRUE;
}
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::SDigits2Digits()
+{
+ //
+ // Merges the input s-digits and converts them to normal digits
+ //
+
+ if (!MergeSDigits()) return kFALSE;
+
+ return ConvertSDigits();
+
+}
+
//_____________________________________________________________________________
Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector)
{
}
//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::WriteDigits()
+Bool_t AliTRDdigitizer::WriteDigits() const
{
//
// Writes out the TRD-digits and the dictionaries
//
- // Create the branches
- if (!(gAlice->TreeD()->GetBranch("TRDdigits"))) {
- if (!fDigits->MakeBranch()) return kFALSE;
- }
-
// Store the digits and the dictionary in the tree
- fDigits->WriteDigits();
-
- // Write the new tree into the input file (use overwrite option)
- Char_t treeName[15];
- sprintf(treeName,"TreeD%d",fEvent);
- printf("AliTRDdigitizer::WriteDigits -- ");
- printf("Write the digits tree %s for event %d.\n"
- ,treeName,fEvent);
- gAlice->TreeD()->Write(treeName,TObject::kOverwrite);
-
- return kTRUE;
+ return fDigitsManager->WriteDigits();
}
//_____________________________________________________________________________
-void AliTRDdigitizer::SetPRF(TF1 *prf)
+void AliTRDdigitizer::DeConvExp(Double_t *source, Double_t *target
+ , Int_t n, Int_t nexp)
{
//
- // Defines a new pad response function
+ // Does the deconvolution by the digital filter.
+ //
+ // Author: Marcus Gutfleisch, KIP Heidelberg
+ // Optimized for: New TRF from Venelin Angelov, simulated with CADENCE
+ // Pad-ground capacitance = 25 pF
+ // Pad-pad cross talk capacitance = 6 pF
+ // For 10 MHz digitization, corresponding to 20 time bins
+ // in the drift region
//
- if (fPRF) delete fPRF;
- fPRF = prf;
+ Double_t rates[2];
+ Double_t coefficients[2];
+ /* initialize (coefficient = alpha, rates = lambda) */
+
+ if( nexp == 1 ) {
+ rates[0] = 0.466998;
+ /* no rescaling */
+ coefficients[0] = 1.0;
+ }
+ if( nexp == 2 ) {
+ rates[0] = 0.8988162;
+ coefficients[0] = 0.11392069;
+ rates[1] = 0.3745688;
+ coefficients[1] = 0.8860793;
+ /* no rescaling */
+ Float_t sumc = coefficients[0]+coefficients[1];
+ coefficients[0] /= sumc;
+ coefficients[1] /= sumc;
+ }
+
+ Int_t i, k;
+ Double_t reminder[2];
+ Double_t correction, result;
+
+ /* attention: computation order is important */
+ correction=0.0;
+ for ( k = 0; k < nexp; k++ ) reminder[k]=0.0;
+
+ for ( i = 0; i < n; i++ ) {
+ result = ( source[i] - correction ); /* no rescaling */
+ target[i] = result;
+
+ for ( k = 0; k < nexp; k++ ) reminder[k] = rates[k]
+ * ( reminder[k] + coefficients[k] * result);
+
+ correction=0.0;
+ for ( k = 0; k < nexp; k++ ) correction += reminder[k];
+ }
+
}
//_____________________________________________________________________________
-void AliTRDdigitizer::SetTRF(TF1 *trf)
+void AliTRDdigitizer::InitOutput(TFile *file, Int_t iEvent)
{
//
- // Defines a new time response function
+ // Initializes the output branches
//
- if (fTRF) delete fTRF;
- fTRF = trf;
-
-}
-
-//_____________________________________________________________________________
-Double_t TRFlandau(Double_t *x, Double_t *par)
-{
-
- Double_t xx = x[0];
- Double_t landau = par[0] * TMath::Landau(xx,par[1],par[2]);
-
- return landau;
+ fEvent = iEvent;
+ fDigitsManager->MakeTreeAndBranches(file,iEvent);
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff