* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.17 2000/12/08 12:53:27 cblume
-Change in Copy() function for HP-compiler
-
-Revision 1.16 2000/12/07 12:20:46 cblume
-Go back to array compression. Use sampled PRF to speed up digitization
-
-Revision 1.15 2000/11/23 14:34:08 cblume
-Fixed bug in expansion routine of arrays (initialize buffers properly)
-
-Revision 1.14 2000/11/20 08:54:44 cblume
-Switch off compression as default
-
-Revision 1.13 2000/11/10 14:57:52 cblume
-Changes in the geometry constants for the DEC compiler
-
-Revision 1.12 2000/11/01 14:53:20 cblume
-Merge with TRD-develop
-
-Revision 1.1.4.9 2000/10/26 17:00:22 cblume
-Fixed bug in CheckDetector()
-
-Revision 1.1.4.8 2000/10/23 13:41:35 cblume
-Added protection against Log(0) in the gas gain calulation
-
-Revision 1.1.4.7 2000/10/17 02:27:34 cblume
-Get rid of global constants
-
-Revision 1.1.4.6 2000/10/16 01:16:53 cblume
-Changed timebin 0 to be the one closest to the readout
-
-Revision 1.1.4.5 2000/10/15 23:34:29 cblume
-Faster version of the digitizer
-
-Revision 1.1.4.4 2000/10/06 16:49:46 cblume
-Made Getters const
-
-Revision 1.1.4.3 2000/10/04 16:34:58 cblume
-Replace include files by forward declarations
-
-Revision 1.1.4.2 2000/09/22 14:41:10 cblume
-Bug fix in PRF. Included time response. New structure
-
-Revision 1.10 2000/10/05 07:27:53 cblume
-Changes in the header-files by FCA
-
-Revision 1.9 2000/10/02 21:28:19 fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.8 2000/06/09 11:10:07 cblume
-Compiler warnings and coding conventions, next round
-
-Revision 1.7 2000/06/08 18:32:58 cblume
-Make code compliant to coding conventions
-
-Revision 1.6 2000/06/07 16:27:32 cblume
-Try to remove compiler warnings on Sun and HP
-
-Revision 1.5 2000/05/09 16:38:57 cblume
-Removed PadResponse(). Merge problem
-
-Revision 1.4 2000/05/08 15:53:45 cblume
-Resolved merge conflict
-
-Revision 1.3 2000/04/28 14:49:27 cblume
-Only one declaration of iDict in MakeDigits()
-
-Revision 1.1.4.1 2000/05/08 14:42:04 cblume
-Introduced AliTRDdigitsManager
-
-Revision 1.1 2000/02/28 19:00:13 cblume
-Add new TRD classes
-
-*/
-
-///////////////////////////////////////////////////////////////////////////////
-// //
-// Creates and handles digits from TRD hits //
-// //
-// The following effects are included: //
-// - Diffusion //
-// - ExB effects //
-// - Gas gain including fluctuations //
-// - Pad-response (simple Gaussian approximation) //
-// - Electronics noise //
-// - Electronics gain //
-// - Digitization //
-// - ADC threshold //
-// 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. //
-// //
-///////////////////////////////////////////////////////////////////////////////
-
-#include <stdlib.h>
+/* $Id$ */
+
+////////////////////////////////////////////////////////////////////////////
+// //
+// Creates and handles digits from TRD hits //
+// //
+// Authors: C. Blume (blume@ikf.uni-frankfurt.de) //
+// C. Lippmann //
+// B. Vulpescu //
+// //
+// The following effects are included: //
+// - Diffusion //
+// - ExB effects //
+// - Gas gain including fluctuations //
+// - Pad-response (simple Gaussian approximation) //
+// - Time-response //
+// - Electronics noise //
+// - Electronics gain //
+// - Digitization //
+// - Zero suppression //
+// //
+////////////////////////////////////////////////////////////////////////////
+#include <TF1.h>
+#include <TFile.h>
+#include <TGeoGlobalMagField.h>
+#include <TGeoManager.h>
+#include <TList.h>
#include <TMath.h>
-#include <TVector.h>
-#include <TRandom.h>
#include <TROOT.h>
+#include <TRandom.h>
+#include <TTask.h>
#include <TTree.h>
-#include <TFile.h>
-#include <TF1.h>
+#include <TVector.h>
#include "AliRun.h"
-
+#include "AliMC.h"
+#include "AliRunLoader.h"
+#include "AliLoader.h"
+#include "AliConfig.h"
+#include "AliMagF.h"
+#include "AliRunDigitizer.h"
+#include "AliRunLoader.h"
+#include "AliLoader.h"
+#include "AliLog.h"
#include "AliTRD.h"
#include "AliTRDhit.h"
#include "AliTRDdigitizer.h"
-#include "AliTRDdataArrayI.h"
-#include "AliTRDdataArrayF.h"
-#include "AliTRDsegmentArray.h"
+
+#include "AliTRDarrayDictionary.h"
+#include "AliTRDarrayADC.h"
+#include "AliTRDarraySignal.h"
#include "AliTRDdigitsManager.h"
#include "AliTRDgeometry.h"
+#include "AliTRDpadPlane.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDSimParam.h"
+#include "AliTRDCommonParam.h"
+#include "AliTRDfeeParam.h"
+#include "AliTRDmcmSim.h"
+#include "Cal/AliTRDCalROC.h"
+#include "Cal/AliTRDCalDet.h"
ClassImp(AliTRDdigitizer)
//_____________________________________________________________________________
-AliTRDdigitizer::AliTRDdigitizer():TNamed()
+AliTRDdigitizer::AliTRDdigitizer()
+ :AliDigitizer()
+ ,fRunLoader(0)
+ ,fDigitsManager(0)
+ ,fSDigitsManager(0)
+ ,fSDigitsManagerList(0)
+ ,fTRD(0)
+ ,fGeo(0)
+ ,fEvent(0)
+ ,fMasks(0)
+ ,fCompress(kTRUE)
+ ,fSDigits(kFALSE)
+ ,fMergeSignalOnly(kFALSE)
{
//
// AliTRDdigitizer default constructor
//
+
+ Init();
+
+}
+
+//_____________________________________________________________________________
+AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
+ :AliDigitizer(name,title)
+ ,fRunLoader(0)
+ ,fDigitsManager(0)
+ ,fSDigitsManager(0)
+ ,fSDigitsManagerList(0)
+ ,fTRD(0)
+ ,fGeo(0)
+ ,fEvent(0)
+ ,fMasks(0)
+ ,fCompress(kTRUE)
+ ,fSDigits(kFALSE)
+ ,fMergeSignalOnly(kFALSE)
+{
+ //
+ // AliTRDdigitizer 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;
+ Init();
}
//_____________________________________________________________________________
-AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
- :TNamed(name,title)
+AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
+ , const Text_t *name, const Text_t *title)
+ :AliDigitizer(manager,name,title)
+ ,fRunLoader(0)
+ ,fDigitsManager(0)
+ ,fSDigitsManager(0)
+ ,fSDigitsManagerList(0)
+ ,fTRD(0)
+ ,fGeo(0)
+ ,fEvent(0)
+ ,fMasks(0)
+ ,fCompress(kTRUE)
+ ,fSDigits(kFALSE)
+ ,fMergeSignalOnly(kFALSE)
{
//
- // AliTRDdigitizer default constructor
+ // AliTRDdigitizer constructor
//
- fInputFile = NULL;
- fDigits = NULL;
- fTRD = NULL;
- fGeo = NULL;
- fPRF = NULL;
- fPRFsmp = NULL;
- fTRF = NULL;
- fTRFint = NULL;
+ Init();
- fEvent = 0;
+}
- fCompress = kTRUE;
- fVerbose = 1;
+//_____________________________________________________________________________
+AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
+ :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
+ ,fRunLoader(0)
+ ,fDigitsManager(0)
+ ,fSDigitsManager(0)
+ ,fSDigitsManagerList(0)
+ ,fTRD(0)
+ ,fGeo(0)
+ ,fEvent(0)
+ ,fMasks(0)
+ ,fCompress(kTRUE)
+ ,fSDigits(kFALSE)
+ ,fMergeSignalOnly(kFALSE)
+{
+ //
+ // AliTRDdigitizer constructor
+ //
Init();
}
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::Init()
+{
+ //
+ // Initialize the digitizer with default values
+ //
+
+ fRunLoader = 0;
+ fDigitsManager = 0;
+ fSDigitsManager = 0;
+ fSDigitsManagerList = 0;
+ fTRD = 0;
+ fGeo = 0;
+
+ fEvent = 0;
+ fMasks = 0;
+ fCompress = kTRUE;
+ fSDigits = kFALSE;
+ fMergeSignalOnly = kFALSE;
+
+ return AliDigitizer::Init();
+
+}
+
//_____________________________________________________________________________
AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
+ :AliDigitizer(d)
+ ,fRunLoader(0)
+ ,fDigitsManager(0)
+ ,fSDigitsManager(0)
+ ,fSDigitsManagerList(0)
+ ,fTRD(0)
+ ,fGeo(0)
+ ,fEvent(0)
+ ,fMasks(0)
+ ,fCompress(d.fCompress)
+ ,fSDigits(d.fSDigits)
+ ,fMergeSignalOnly(d.fMergeSignalOnly)
{
//
// AliTRDdigitizer copy constructor
//
- ((AliTRDdigitizer &) d).Copy(*this);
-
}
//_____________________________________________________________________________
// AliTRDdigitizer destructor
//
- if (fInputFile) {
- fInputFile->Close();
- delete fInputFile;
+ if (fDigitsManager) {
+ delete fDigitsManager;
+ fDigitsManager = 0;
}
- if (fDigits) {
- delete fDigits;
+ if (fDigitsManager) { //typo? fSDigitsManager?
+ delete fSDigitsManager;
+ fSDigitsManager = 0;
}
- if (fPRF) delete fPRF;
- if (fTRF) delete fTRF;
+ if (fSDigitsManagerList) {
+ fSDigitsManagerList->Delete();
+ delete fSDigitsManagerList;
+ fSDigitsManagerList = 0;
+ }
+
+ if (fMasks) {
+ delete [] fMasks;
+ fMasks = 0;
+ }
+
+ if (fGeo) {
+ delete fGeo;
+ fGeo = 0;
+ }
}
// Assignment operator
//
- if (this != &d) ((AliTRDdigitizer &) d).Copy(*this);
+ if (this != &d) {
+ ((AliTRDdigitizer &) d).Copy(*this);
+ }
+
return *this;
}
//_____________________________________________________________________________
-void AliTRDdigitizer::Copy(TObject &d)
+void AliTRDdigitizer::Copy(TObject &d) const
{
//
// 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).fRunLoader = 0;
+ ((AliTRDdigitizer &) d).fDigitsManager = 0;
+ ((AliTRDdigitizer &) d).fSDigitsManager = 0;
+ ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
+ ((AliTRDdigitizer &) d).fTRD = 0;
+ ((AliTRDdigitizer &) d).fGeo = 0;
+ ((AliTRDdigitizer &) d).fEvent = 0;
+ ((AliTRDdigitizer &) d).fMasks = 0;
+ ((AliTRDdigitizer &) d).fCompress = fCompress;
+ ((AliTRDdigitizer &) d).fSDigits = fSDigits;
+ ((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;
-}
+ TString optionString = option;
+ if (optionString.Contains("deb")) {
+ AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
+ AliInfo("Called with debug option");
+ }
+
+ // The AliRoot file is already connected by the manager
+ AliRunLoader *inrl = 0x0;
+
+ if (gAlice) {
+ AliDebug(1,"AliRun object found on file.");
+ }
+ else {
+ inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
+ inrl->LoadgAlice();
+ gAlice = inrl->GetAliRun();
+ if (!gAlice) {
+ AliError("Could not find AliRun object.")
+ return;
+ }
+ }
+
+ Int_t nInput = fManager->GetNinputs();
+ fMasks = new Int_t[nInput];
+ for (iInput = 0; iInput < nInput; iInput++) {
+ fMasks[iInput] = fManager->GetMask(iInput);
+ }
-//_____________________________________________________________________________
-Int_t AliTRDdigitizer::ExB(Float_t driftlength, Float_t *xyz)
-{
//
- // Applies E x B effects to the position of a single electron
+ // Initialization
//
- xyz[0] = xyz[0];
- xyz[1] = xyz[1] + fOmegaTau * driftlength;
- xyz[2] = xyz[2];
+ AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
- return 1;
+ if (InitDetector()) {
+
+ AliLoader *ogime = orl->GetLoader("TRDLoader");
+
+ TTree *tree = 0;
+ if (fSDigits) {
+ // If we produce SDigits
+ tree = ogime->TreeS();
+ if (!tree) {
+ ogime->MakeTree("S");
+ tree = ogime->TreeS();
+ }
+ }
+ else {
+ // If we produce Digits
+ tree = ogime->TreeD();
+ if (!tree) {
+ ogime->MakeTree("D");
+ tree = ogime->TreeD();
+ }
+ }
+
+ MakeBranch(tree);
+
+ }
+
+ for (iInput = 0; iInput < nInput; iInput++) {
+
+ AliDebug(1,Form("Add input stream %d",iInput));
+
+ // Check if the input tree exists
+ inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
+ AliLoader *gime = inrl->GetLoader("TRDLoader");
+
+ TTree *treees = gime->TreeS();
+ if (treees == 0x0) {
+ if (gime->LoadSDigits()) {
+ AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
+ return;
+ }
+ treees = gime->TreeS();
+ }
+
+ if (treees == 0x0) {
+ AliError(Form("Input stream %d does not exist",iInput));
+ return;
+ }
+
+ // Read the s-digits via digits manager
+ sdigitsManager = new AliTRDdigitsManager();
+ sdigitsManager->SetSDigits(kTRUE);
+
+ AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
+ AliLoader *gimme = rl->GetLoader("TRDLoader");
+ if (!gimme->TreeS())
+ {
+ gimme->LoadSDigits();
+ }
+
+ sdigitsManager->ReadDigits(gimme->TreeS());
+
+ // Add the s-digits to the input list
+ AddSDigitsManager(sdigitsManager);
+
+ }
+
+ // Convert the s-digits to normal digits
+ AliDebug(1,"Do the conversion");
+ SDigits2Digits();
+
+ // Store the digits
+ AliDebug(1,"Write the digits");
+ fDigitsManager->WriteDigits();
+
+ // Write parameters
+ orl->CdGAFile();
+
+ // Clean up
+ DeleteSDigitsManager();
+
+ AliDebug(1,"Done");
}
//_____________________________________________________________________________
-Int_t AliTRDdigitizer::PadResponse(Float_t signal, Float_t dist, Float_t *pad)
+Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
{
//
- // Applies the pad response
+ // Opens a ROOT-file with TRD-hits and reads in the hit-tree
//
+ // Connect the AliRoot file containing Geometry, Kine, and Hits
+ //
- Int_t iBin = ((Int_t) (( - dist - fPRFlo) / fPRFwid));
+ TString evfoldname = AliConfig::GetDefaultEventFolderName();
- Int_t iBin0 = iBin - fPRFpad;
- Int_t iBin1 = iBin;
- Int_t iBin2 = iBin + fPRFpad;
+ fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
+ if (!fRunLoader) {
+ fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
+ }
+ if (!fRunLoader) {
+ AliError(Form("Can not open session for file %s.",file));
+ return kFALSE;
+ }
+
+ if (!fRunLoader->GetAliRun()) {
+ fRunLoader->LoadgAlice();
+ }
+ gAlice = fRunLoader->GetAliRun();
+
+ if (gAlice) {
+ AliDebug(1,"AliRun object found on file.");
+ }
+ else {
+ AliError("Could not find AliRun object.");
+ return kFALSE;
+ }
- if ((iBin0 >= 0) && (iBin2 < fPRFbin)) {
+ fEvent = nEvent;
+
+ AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
+ if (!loader) {
+ AliError("Can not get TRD loader from Run Loader");
+ return kFALSE;
+ }
+
+ if (InitDetector()) {
+ TTree *tree = 0;
+ if (fSDigits) {
+ // If we produce SDigits
+ tree = loader->TreeS();
+ if (!tree) {
+ loader->MakeTree("S");
+ tree = loader->TreeS();
+ }
+ }
+ else {
+ // If we produce Digits
+ tree = loader->TreeD();
+ if (!tree) {
+ loader->MakeTree("D");
+ tree = loader->TreeD();
+ }
+ }
+ return MakeBranch(tree);
+ }
+ else {
+ return kFALSE;
+ }
- pad[0] = signal * fPRFsmp[iBin0];
- pad[1] = signal * fPRFsmp[iBin1];
- pad[2] = signal * fPRFsmp[iBin2];
+}
- return 1;
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, 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
+ //
+ fRunLoader = runLoader;
+ if (!fRunLoader) {
+ AliError("RunLoader does not exist");
+ return kFALSE;
+ }
+
+ if (!fRunLoader->GetAliRun()) {
+ fRunLoader->LoadgAlice();
+ }
+ gAlice = fRunLoader->GetAliRun();
+
+ if (gAlice) {
+ AliDebug(1,"AliRun object found on file.");
}
else {
+ AliError("Could not find AliRun object.");
+ return kFALSE;
+ }
- return 0;
+ fEvent = nEvent;
+ AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
+ if (!loader) {
+ AliError("Can not get TRD loader from Run Loader");
+ return kFALSE;
+ }
+
+ if (InitDetector()) {
+ TTree *tree = 0;
+ if (fSDigits) {
+ // If we produce SDigits
+ tree = loader->TreeS();
+ if (!tree) {
+ loader->MakeTree("S");
+ tree = loader->TreeS();
+ }
+ }
+ else {
+ // If we produce Digits
+ tree = loader->TreeD();
+ if (!tree) {
+ loader->MakeTree("D");
+ tree = loader->TreeD();
+ }
+ }
+ return MakeBranch(tree);
+ }
+ else {
+ return kFALSE;
}
}
//_____________________________________________________________________________
-Float_t AliTRDdigitizer::TimeResponse(Float_t time)
+Bool_t AliTRDdigitizer::InitDetector()
{
//
- // Applies the preamp shaper time response
+ // Sets the pointer to the TRD detector and the geometry
//
- Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
- if ((iBin >= 0) && (iBin < fTRFbin)) {
- return fTRFint[iBin];
+ // Get the pointer to the detector class and check for version 1
+ fTRD = (AliTRD *) gAlice->GetDetector("TRD");
+ if (!fTRD) {
+ AliFatal("No TRD module found");
+ exit(1);
+ }
+ if (fTRD->IsVersion() != 1) {
+ AliFatal("TRD must be version 1 (slow simulator)");
+ exit(1);
+ }
+
+ // Get the geometry
+ fGeo = new AliTRDgeometry();
+
+ // Create a digits manager
+ if (fDigitsManager) {
+ delete fDigitsManager;
}
+ fDigitsManager = new AliTRDdigitsManager();
+ fDigitsManager->SetSDigits(fSDigits);
+ fDigitsManager->CreateArrays();
+ fDigitsManager->SetEvent(fEvent);
+
+ // The list for the input s-digits manager to be merged
+ if (fSDigitsManagerList) {
+ fSDigitsManagerList->Delete();
+ }
else {
- return 0.0;
- }
+ fSDigitsManagerList = new TList();
+ }
-}
+ return kTRUE;
+}
//_____________________________________________________________________________
-void AliTRDdigitizer::Init()
+Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
{
+ //
+ // Create the branches for the digits array
//
- // Initializes the digitization procedure with standard values
- //
-
- // 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);
+
+ return fDigitsManager->MakeBranch(tree);
}
//_____________________________________________________________________________
-void AliTRDdigitizer::IntegrateTRF()
+void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
{
//
- // Integrates the time response function over the time bin size
+ // Add a digits manager for s-digits to the input list.
//
- 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);
- }
+ fSDigitsManagerList->Add(man);
}
//_____________________________________________________________________________
-void AliTRDdigitizer::SamplePRF()
+void AliTRDdigitizer::DeleteSDigitsManager()
{
//
- // Samples the pad response function
+ // Removes digits manager from the input list.
//
- 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);
- }
+ fSDigitsManagerList->Delete();
}
//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::Open(const Char_t *name, Int_t nEvent)
+Bool_t AliTRDdigitizer::MakeDigits()
{
//
- // Opens a ROOT-file with TRD-hits and reads in the hit-tree
+ // Creates digits.
//
- // Connect the AliRoot file containing Geometry, Kine, and Hits
- fInputFile = (TFile*) gROOT->GetListOfFiles()->FindObject(name);
- if (!fInputFile) {
- printf("AliTRDdigitizer::Open -- ");
- printf("Open the ALIROOT-file %s.\n",name);
- fInputFile = new TFile(name,"UPDATE");
- }
- else {
- printf("AliTRDdigitizer::Open -- ");
- printf("%s is already open.\n",name);
- }
+ AliDebug(1,"Start creating digits");
- gAlice = (AliRun*) fInputFile->Get("gAlice");
- if (gAlice) {
- printf("AliTRDdigitizer::Open -- ");
- printf("AliRun object found on file.\n");
+ if (!fGeo) {
+ AliError("No geometry defined");
+ return kFALSE;
}
- else {
- printf("AliTRDdigitizer::Open -- ");
- printf("Could not find AliRun object.\n");
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
return kFALSE;
}
- fEvent = nEvent;
+ const Int_t kNdet = AliTRDgeometry::Ndet();
- // Import the Trees for the event nEvent in the file
- Int_t nparticles = gAlice->GetEvent(fEvent);
- if (nparticles <= 0) {
- printf("AliTRDdigitizer::Open -- ");
- printf("No entries in the trees for event %d.\n",fEvent);
+ Float_t **hits = new Float_t*[kNdet];
+ Int_t *nhit = new Int_t[kNdet];
+
+ AliTRDarraySignal *signals = 0x0;
+
+ // Sort all hits according to detector number
+ if (!SortHits(hits,nhit)) {
+ AliError("Sorting hits failed");
return kFALSE;
}
- return InitDetector();
+ // Loop through all detectors
+ for (Int_t det = 0; det < kNdet; det++) {
+
+ // Detectors that are switched off, not installed, etc.
+ if (( calibration->IsChamberInstalled(det)) &&
+ (!calibration->IsChamberMasked(det)) &&
+ ( fGeo->ChamberInGeometry(det)) &&
+ (nhit[det] > 0)) {
+
+ signals = new AliTRDarraySignal();
+
+ // Convert the hits of the current detector to detector signals
+ if (!ConvertHits(det,hits[det],nhit[det],signals)) {
+ AliError(Form("Conversion of hits failed for detector=%d",det));
+ return kFALSE;
+ }
+ // Convert the detector signals to digits or s-digits
+ if (!ConvertSignals(det,signals)) {
+ AliError(Form("Conversion of signals failed for detector=%d",det));
+ return kFALSE;
+ }
-}
+ // Delete the signals array
+ delete signals;
+ signals = 0x0;
-//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::InitDetector()
-{
- //
- // Sets the pointer to the TRD detector and the geometry
- //
+ } // if: detector status
- // Get the pointer to the detector class and check for version 1
- fTRD = (AliTRD*) gAlice->GetDetector("TRD");
- if (fTRD->IsVersion() != 1) {
- printf("AliTRDdigitizer::Open -- ");
- printf("TRD must be version 1 (slow simulator).\n");
- exit(1);
- }
+ delete [] hits[det];
- // Get the geometry
- fGeo = fTRD->GetGeometry();
- printf("AliTRDdigitizer::Open -- ");
- printf("Geometry version %d\n",fGeo->IsVersion());
+ } // for: detector
+
+ delete [] hits;
+ delete [] nhit;
return kTRUE;
}
//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::MakeDigits()
+Bool_t AliTRDdigitizer::SortHits(Float_t **hits, Int_t *nhit)
{
//
- // Loops through the TRD-hits and creates the digits.
+ // Read all the hits and sorts them according to detector number
+ // in the output array <hits>.
//
- ///////////////////////////////////////////////////////////////
- // Parameter
- ///////////////////////////////////////////////////////////////
+ AliDebug(1,"Start sorting hits");
- // Converts number of electrons to fC
- const Float_t kEl2fC = 1.602E-19 * 1.0E15;
+ const Int_t kNdet = AliTRDgeometry::Ndet();
+ // Size of the hit vector
+ const Int_t kNhit = 6;
- ///////////////////////////////////////////////////////////////
+ Float_t *xyz = 0;
+ Int_t nhitTrk = 0;
- // Number of pads included in the pad response
- const Int_t kNpad = 3;
+ Int_t *lhit = new Int_t[kNdet];
- // Number of track dictionary arrays
- const Int_t kNDict = AliTRDdigitsManager::kNDict;
+ for (Int_t det = 0; det < kNdet; det++) {
+ lhit[det] = 0;
+ nhit[det] = 0;
+ hits[det] = 0;
+ }
- Int_t iRow, iCol, iTime;
- Int_t iDict;
- Int_t nBytes = 0;
+ AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
+ if (!gimme->TreeH()) {
+ gimme->LoadHits();
+ }
+ TTree *hitTree = gimme->TreeH();
+ if (hitTree == 0x0) {
+ AliError("Can not get TreeH");
+ return kFALSE;
+ }
+ fTRD->SetTreeAddress();
- Int_t totalSizeDigits = 0;
- Int_t totalSizeDict0 = 0;
- Int_t totalSizeDict1 = 0;
- Int_t totalSizeDict2 = 0;
+ // Get the number of entries in the hit tree
+ // (Number of primary particles creating a hit somewhere)
+ Int_t nTrk = (Int_t) hitTree->GetEntries();
+ AliDebug(1,Form("Found %d tracks",nTrk));
- AliTRDdataArrayF *signals = 0;
- AliTRDdataArrayI *digits = 0;
- AliTRDdataArrayI *dictionary[kNDict];
+ // Loop through all the tracks in the tree
+ for (Int_t iTrk = 0; iTrk < nTrk; iTrk++) {
- // Create a digits manager
- fDigits = new AliTRDdigitsManager();
+ gAlice->GetMCApp()->ResetHits();
+ hitTree->GetEvent(iTrk);
- // Create a container for the amplitudes
- AliTRDsegmentArray *signalsArray
- = new AliTRDsegmentArray("AliTRDdataArrayF",AliTRDgeometry::Ndet());
+ if (!fTRD->Hits()) {
+ AliError(Form("No hits array for track = %d",iTrk));
+ continue;
+ }
- if (!fGeo) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("No geometry defined\n");
- return kFALSE;
- }
+ // Number of hits for this track
+ nhitTrk = fTRD->Hits()->GetEntriesFast();
+
+ Int_t hitCnt = 0;
+ // Loop through the TRD hits
+ AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
+ while (hit) {
+
+ hitCnt++;
+
+ // Don't analyze test hits
+ if (((Int_t) hit->GetCharge()) != 0) {
+
+ Int_t trk = hit->Track();
+ Int_t det = hit->GetDetector();
+ Int_t q = hit->GetCharge();
+ Float_t x = hit->X();
+ Float_t y = hit->Y();
+ Float_t z = hit->Z();
+ Float_t time = hit->GetTime();
+
+ if (nhit[det] == lhit[det]) {
+ // Inititialization of new detector
+ xyz = new Float_t[kNhit*(nhitTrk+lhit[det])];
+ if (hits[det]) {
+ memcpy(xyz,hits[det],sizeof(Float_t)*kNhit*lhit[det]);
+ delete [] hits[det];
+ }
+ lhit[det] += nhitTrk;
+ hits[det] = xyz;
+ }
+ else {
+ xyz = hits[det];
+ }
+ xyz[nhit[det]*kNhit+0] = x;
+ xyz[nhit[det]*kNhit+1] = y;
+ xyz[nhit[det]*kNhit+2] = z;
+ xyz[nhit[det]*kNhit+3] = q;
+ xyz[nhit[det]*kNhit+4] = trk;
+ xyz[nhit[det]*kNhit+5] = time;
+ nhit[det]++;
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Start creating digits.\n");
- if (fVerbose > 0) this->Dump();
+ } // if: charge != 0
- // The Lorentz factor
- if (fExBOn) {
- fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
- }
- else {
- fLorentzFactor = 1.0;
- }
+ hit = (AliTRDhit *) fTRD->NextHit();
- // Create the sampled PRF
- SamplePRF();
+ } // for: hits of one track
- // Create the integrated TRF
- IntegrateTRF();
+ } // for: tracks
- // Get the pointer to the hit tree
- TTree *HitTree = gAlice->TreeH();
+ delete [] lhit;
- // 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 -- ");
- printf("Found %d primary particles\n",nTrack);
- }
+ return kTRUE;
- Int_t detectorOld = -1;
- Int_t countHits = 0;
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::ConvertHits(Int_t det, Float_t *hits, Int_t nhit
+ , AliTRDarraySignal *signals)
+{
+ //
+ // Converts the detectorwise sorted hits to detector signals
+ //
- // Loop through all entries in the tree
- for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) {
+ AliDebug(1,Form("Start converting hits for detector=%d (nhits=%d)",det,nhit));
- gAlice->ResetHits();
- nBytes += HitTree->GetEvent(iTrack);
+ // Number of pads included in the pad response
+ const Int_t kNpad = 3;
+ // Number of track dictionary arrays
+ const Int_t kNdict = AliTRDdigitsManager::kNDict;
+ // Size of the hit vector
+ const Int_t kNhit = 6;
+
+ // Width of the amplification region
+ const Float_t kAmWidth = AliTRDgeometry::AmThick();
+ // Width of the drift region
+ const Float_t kDrWidth = AliTRDgeometry::DrThick();
+ // Drift + amplification region
+ const Float_t kDrMin = - 0.5 * kAmWidth;
+ const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
+
+ Int_t iPad = 0;
+ Int_t dict = 0;
+ Int_t timeBinTRFend = 1;
+
+ Double_t pos[3];
+ Double_t loc[3];
+ Double_t padSignal[kNpad];
+ Double_t signalOld[kNpad];
+
+ AliTRDarrayDictionary *dictionary[kNdict];
+
+ AliTRDSimParam *simParam = AliTRDSimParam::Instance();
+ AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+
+ if (!commonParam) {
+ AliFatal("Could not get common parameterss");
+ return kFALSE;
+ }
+ if (!simParam) {
+ AliFatal("Could not get simulation parameters");
+ return kFALSE;
+ }
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
+ return kFALSE;
+ }
+
+ // Get the detector wise calibration objects
+ AliTRDCalROC *calVdriftROC = 0;
+ Float_t calVdriftDetValue = 0.0;
+ const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
+ AliTRDCalROC *calT0ROC = 0;
+ Float_t calT0DetValue = 0.0;
+ const AliTRDCalDet *calT0Det = calibration->GetT0Det();
+
+ if (simParam->TRFOn()) {
+ timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
+ * commonParam->GetSamplingFrequency())) - 1;
+ }
- // 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);
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
+ Float_t samplingRate = commonParam->GetSamplingFrequency();
+ Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
+
+ AliTRDpadPlane *padPlane = fGeo->GetPadPlane(det);
+ Int_t layer = fGeo->GetLayer(det); //update
+ Float_t row0 = padPlane->GetRow0ROC();
+ Int_t nRowMax = padPlane->GetNrows();
+ Int_t nColMax = padPlane->GetNcols();
+
+ // Create a new array for the signals
+ signals->Allocate(nRowMax,nColMax,nTimeTotal);
+
+ // Create a new array for the dictionary
+ for (dict = 0; dict < kNdict; dict++) {
+ dictionary[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
+ dictionary[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+
+ // Loop through the hits in this detector
+ for (Int_t hit = 0; hit < nhit; hit++) {
+
+ pos[0] = hits[hit*kNhit+0];
+ pos[1] = hits[hit*kNhit+1];
+ pos[2] = hits[hit*kNhit+2];
+ Float_t q = hits[hit*kNhit+3];
+ Float_t hittime = hits[hit*kNhit+5];
+ Int_t track = ((Int_t) hits[hit*kNhit+4]);
+
+ Int_t inDrift = 1;
+
+ // Find the current volume with the geo manager
+ gGeoManager->SetCurrentPoint(pos);
+ gGeoManager->FindNode();
+ if (strstr(gGeoManager->GetPath(),"/UK")) {
+ inDrift = 0;
}
- // Loop through the TRD hits
- for (Int_t iHit = 0; iHit < nHit; iHit++) {
-
- 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();
- Float_t colPadSize = fGeo->GetColPadSize();
- Float_t timeBinSize = fGeo->GetTimeBinSize();
-
- if (fVerbose > 1) {
- printf("Analyze hit no. %d ",iHit);
- printf("-----------------------------------------------------------\n");
- hit->Dump();
- printf("plane = %d, sector = %d, chamber = %d\n"
- ,plane,sector,chamber);
- printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n"
- ,nRowMax,nColMax,nTimeMax);
- printf("row0 = %f, col0 = %f, time0 = %f\n"
- ,row0,col0,time0);
- printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n"
- ,rowPadSize,colPadSize,timeBinSize);
+ // Get the calibration objects
+ calVdriftROC = calibration->GetVdriftROC(det);
+ calVdriftDetValue = calVdriftDet->GetValue(det);
+ calT0ROC = calibration->GetT0ROC(det);
+ calT0DetValue = calT0Det->GetValue(det);
+
+ // Go to the local coordinate system:
+ // loc[0] - col direction in amplification or driftvolume
+ // loc[1] - row direction in amplification or driftvolume
+ // loc[2] - time direction in amplification or driftvolume
+ gGeoManager->MasterToLocal(pos,loc);
+ if (inDrift) {
+ // Relative to middle of amplification region
+ loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
+ }
+
+ // The driftlength [cm] (w/o diffusion yet !).
+ // It is negative if the hit is between pad plane and anode wires.
+ Double_t driftlength = -1.0 * loc[2];
+
+ // Stupid patch to take care of TR photons that are absorbed
+ // outside the chamber volume. A real fix would actually need
+ // a more clever implementation of the TR hit generation
+ if (q < 0.0) {
+ if ((loc[1] < padPlane->GetRowEndROC()) ||
+ (loc[1] > padPlane->GetRow0ROC())) {
+ continue;
}
-
- // Don't analyze test hits with amplitude 0.
- if (((Int_t) q) == 0) continue;
+ if ((driftlength < kDrMin) ||
+ (driftlength > kDrMax)) {
+ continue;
+ }
+ }
- if (detector != detectorOld) {
+ // Get row and col of unsmeared electron to retrieve drift velocity
+ // The pad row (z-direction)
+ Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
+ if (rowE < 0) {
+ continue;
+ }
+ Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
+ // The pad column (rphi-direction)
+ Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
+ Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
+ if (colE < 0) {
+ continue;
+ }
+ Double_t colOffset = 0.0;
- 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 ... ");
- }
- signals->Allocate(nRowMax,nColMax,nTimeMax);
- }
- else {
- // Expand an existing one
- if (fCompress) {
- if (fVerbose > 1) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Expand an existing container ... ");
- }
- signals->Expand();
- }
+ // Normalized drift length
+ Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
+ Double_t absdriftlength = TMath::Abs(driftlength);
+ if (commonParam->ExBOn()) {
+ absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
+ }
+
+ // 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++) {
+
+ // Now the real local coordinate system of the ROC
+ // column direction: locC
+ // row direction: locR
+ // time direction: locT
+ // locR and locC are identical to the coordinates of the corresponding
+ // volumina of the drift or amplification region.
+ // locT is defined relative to the wire plane (i.e. middle of amplification
+ // region), meaning locT = 0, and is negative for hits coming from the
+ // drift region.
+ Double_t locC = loc[0];
+ Double_t locR = loc[1];
+ Double_t locT = loc[2];
+
+ // Electron attachment
+ if (simParam->ElAttachOn()) {
+ if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
+ continue;
+ }
+ }
+
+ // Apply the diffusion smearing
+ if (simParam->DiffusionOn()) {
+ if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
+ continue;
}
- // 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);
- }
- else {
- if (fCompress) dictionary[iDict]->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);
+ // Apply E x B effects (depends on drift direction)
+ if (commonParam->ExBOn()) {
+ if (!(ExB(driftvelocity,driftlength,locC))) {
+ continue;
+ }
+ }
- // The hit position in pad coordinates (center pad)
+ // The electron position after diffusion and ExB in pad coordinates.
// 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);
+ rowE = padPlane->GetPadRowNumberROC(locR);
+ if (rowE < 0) continue;
+ rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
+
+ // The pad column (rphi-direction)
+ offsetTilt = padPlane->GetTiltOffset(rowOffset);
+ colE = padPlane->GetPadColNumber(locC+offsetTilt);
+ if (colE < 0) continue;
+ colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
+
+ // Also re-retrieve drift velocity because col and row may have changed
+ driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
+ Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
+
+ // Convert the position to drift time [mus], using either constant drift velocity or
+ // time structure of drift cells (non-isochronity, GARFIELD calculation).
+ // Also add absolute time of hits to take pile-up events into account properly
+ Double_t drifttime;
+ if (simParam->TimeStructOn()) {
+ // Get z-position with respect to anode wire
+ Double_t zz = row0 - locR + padPlane->GetAnodeWireOffset();
+ zz -= ((Int_t)(2 * zz)) / 2.0;
+ if (zz > 0.25) {
+ zz = 0.5 - zz;
+ }
+ // Use drift time map (GARFIELD)
+ drifttime = commonParam->TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
+ + hittime;
+ }
+ else {
+ // Use constant drift velocity
+ drifttime = TMath::Abs(locT) / driftvelocity
+ + hittime;
}
- // 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];
+ // Apply the gas gain including fluctuations
+ Double_t ggRndm = 0.0;
+ do {
+ ggRndm = gRandom->Rndm();
+ } while (ggRndm <= 0);
+ Double_t signal = -(simParam->GetGasGain()) * TMath::Log(ggRndm);
+
+ // Apply the pad response
+ if (simParam->PRFOn()) {
+ // The distance of the electron to the center of the pad
+ // in units of pad width
+ Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
+ / padPlane->GetColSize(colE);
+ // This is a fixed parametrization, i.e. not dependent on
+ // calibration values !
+ if (!(calibration->PadResponse(signal,dist,layer,padSignal))) continue;
+ }
+ else {
+ padSignal[0] = 0.0;
+ padSignal[1] = signal;
+ padSignal[2] = 0.0;
+ }
- // Electron attachment
- if (fElAttachOn) {
- if (gRandom->Rndm() < (driftlengthL * fElAttachProp / 100.))
- continue;
+ // The time bin (always positive), with t0 distortion
+ Double_t timeBinIdeal = drifttime * samplingRate + t0;
+ // Protection
+ if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
+ timeBinIdeal = 2 * nTimeTotal;
+ }
+ Int_t timeBinTruncated = ((Int_t) timeBinIdeal);
+ // The distance of the position to the middle of the timebin
+ Double_t timeOffset = ((Float_t) timeBinTruncated
+ + 0.5 - timeBinIdeal) / samplingRate;
+
+ // 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(timeBinTruncated,0)
+ ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
+ ;iTimeBin++) {
+
+ // Apply the time response
+ Double_t timeResponse = 1.0;
+ Double_t crossTalk = 0.0;
+ Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
+
+ if (simParam->TRFOn()) {
+ timeResponse = simParam->TimeResponse(time);
+ }
+ if (simParam->CTOn()) {
+ crossTalk = simParam->CrossTalk(time);
}
- // Apply the diffusion smearing
- if (fDiffusionOn) {
- if (!(Diffusion(driftlengthL,xyz))) continue;
- }
+ signalOld[0] = 0.0;
+ signalOld[1] = 0.0;
+ signalOld[2] = 0.0;
- // Apply E x B effects
- if (fExBOn) {
- if (!(ExB(driftlength,xyz))) continue;
- }
+ for (iPad = 0; iPad < kNpad; iPad++) {
- // 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);
- }
+ Int_t colPos = colE + iPad - 1;
+ if (colPos < 0) continue;
+ if (colPos >= nColMax) break;
- // 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;
- }
+ // Add the signals
+ signalOld[iPad] = signals->GetData(rowE,colPos,iTimeBin);
- // 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);
- }
+ if (colPos != colE) {
+ // Cross talk added to non-central pads
+ signalOld[iPad] += padSignal[iPad]
+ * (timeResponse + crossTalk);
+ }
+ else {
+ // W/o cross talk at central pad
+ signalOld[iPad] += padSignal[iPad]
+ * timeResponse;
+ }
- // Add the signals
- Float_t signalOld[kNpad] = { 0.0, 0.0, 0.0 };
- for (Int_t 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]);
- }
- if (fVerbose > 3) {
- printf(" iTimeBin = %d, timeResponse = %f\n"
- ,iTimeBin,timeResponse);
- printf(" pad-signal = %f, %f, %f\n"
- ,signalOld[0],signalOld[1],signalOld[2]);
- }
+ signals->SetData(rowE,colPos,iTimeBin,signalOld[iPad]);
// 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);
+ // Note2: Taking out the +1 in track
+ if (signalOld[iPad] > 0.0) {
+ for (dict = 0; dict < kNdict; dict++) {
+ Int_t oldTrack = dictionary[dict]->GetData(rowE,colPos,iTimeBin);
+ if (oldTrack == track) break;
+ if (oldTrack == -1 ) {
+ dictionary[dict]->SetData(rowE,colPos,iTimeBin,track);
+ 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
- } // All hits finished
+ } // Loop: hits
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Finished analyzing %d hits\n",countHits);
+ AliDebug(2,Form("Finished analyzing %d hits",nhit));
- // Loop through all chambers to finalize the digits
- for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
+ return kTRUE;
- 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();
+}
- //if (!(CheckDetector(plane,chamber,sector))) continue;
- if (fVerbose > 0) {
- printf("AliTRDdigitizer::MakeDigits -- ");
- printf("Digitization for chamber %d\n",iDet);
- }
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::ConvertSignals(Int_t det, AliTRDarraySignal *signals)
+{
+ //
+ // Convert signals to digits
+ //
- // Add a container for the digits of this detector
- digits = fDigits->GetDigits(iDet);
- // Allocate memory space for the digits buffer
- digits->Allocate(nRowMax,nColMax,nTimeMax);
+ AliDebug(1,Form("Start converting the signals for detector %d",det));
- // Get the signal container
- signals = (AliTRDdataArrayF *) signalsArray->At(iDet);
- if (signals->GetNtime() == 0) {
- // Create missing containers
- signals->Allocate(nRowMax,nColMax,nTimeMax);
+ if (fSDigits) {
+ // Convert the signal array to s-digits
+ if (!Signal2SDigits(det,signals)) {
+ return kFALSE;
}
- else {
- // Expand the container if neccessary
- if (fCompress) signals->Expand();
+ }
+ else {
+ // Convert the signal array to digits
+ if (!Signal2ADC(det,signals)) {
+ return kFALSE;
}
- // Create the missing dictionary containers
- for (iDict = 0; iDict < kNDict; iDict++) {
- dictionary[iDict] = fDigits->GetDictionary(iDet,iDict);
- if (dictionary[iDict]->GetNtime() == 0) {
- dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeMax);
+ }
+
+ // Compress the arrays
+ CompressOutputArrays(det);
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::Signal2ADC(Int_t det, AliTRDarraySignal *signals)
+{
+ //
+ // Converts the sampled electron signals to ADC values for a given chamber
+ //
+
+ AliDebug(1,Form("Start converting signals to ADC values for detector=%d",det));
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
+ return kFALSE;
+ }
+
+ AliTRDSimParam *simParam = AliTRDSimParam::Instance();
+ if (!simParam) {
+ AliFatal("Could not get simulation parameters");
+ return kFALSE;
+ }
+
+ // Converts number of electrons to fC
+ const Double_t kEl2fC = 1.602e-19 * 1.0e15;
+
+ // Coupling factor
+ Double_t coupling = simParam->GetPadCoupling()
+ * simParam->GetTimeCoupling();
+ // Electronics conversion factor
+ Double_t convert = kEl2fC
+ * simParam->GetChipGain();
+ // ADC conversion factor
+ Double_t adcConvert = simParam->GetADCoutRange()
+ / simParam->GetADCinRange();
+ // The electronics baseline in mV
+ Double_t baseline = simParam->GetADCbaseline()
+ / adcConvert;
+ // The electronics baseline in electrons
+ Double_t baselineEl = baseline
+ / convert;
+
+ Int_t row = 0;
+ Int_t col = 0;
+ Int_t time = 0;
+
+ Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
+ Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
+
+ // The gainfactor calibration objects
+ const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
+ AliTRDCalROC *calGainFactorROC = 0;
+ Float_t calGainFactorDetValue = 0.0;
+
+ AliTRDarrayADC *digits = 0x0;
+
+ if (!signals) {
+ AliError(Form("Signals array for detector %d does not exist\n",det));
+ return kFALSE;
+ }
+ if (signals->HasData()) {
+ // Expand the container if neccessary
+ signals->Expand();
+ }
+ else {
+ // Create missing containers
+ signals->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+
+ // Get the container for the digits of this detector
+ if (fDigitsManager->HasSDigits()) {
+ AliError("Digits manager has s-digits");
+ return kFALSE;
+ }
+
+ digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
+ // Allocate memory space for the digits buffer
+ if (!digits->HasData()) {
+ digits->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+
+ // Get the calibration objects
+ calGainFactorROC = calibration->GetGainFactorROC(det);
+ calGainFactorDetValue = calGainFactorDet->GetValue(det);
+
+ // Create the digits for this chamber
+ for (row = 0; row < nRowMax; row++ ) {
+ for (col = 0; col < nColMax; col++ ) {
+
+ // Check whether pad is masked
+ // Bridged pads are not considered yet!!!
+ if (calibration->IsPadMasked(det,col,row)) {
+ continue;
}
- }
- 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++) {
-
- Float_t signalAmp = signals->GetData(iRow,iCol,iTime);
-
- // 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);
- }
- else {
- adc = ((Int_t) (signalAmp * (fADCoutRange / fADCinRange)));
- }
+ // The gain factors
+ Float_t padgain = calGainFactorDetValue
+ * calGainFactorROC->GetValue(col,row);
+ if (padgain <= 0) {
+ AliError(Form("Not a valid gain %f, %d %d %d",padgain,det,col,row));
+ }
- // 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);
- }
- nDigits++;
- digits->SetData(iRow,iCol,iTime,adc);
- }
+ for (time = 0; time < nTimeTotal; time++) {
+
+ // Get the signal amplitude
+ Float_t signalAmp = signals->GetData(row,col,time);
+ // Pad and time coupling
+ signalAmp *= coupling;
+ // Gain factors
+ signalAmp *= padgain;
+
+ // Add the noise, starting from minus ADC baseline in electrons
+ signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
+ ,-baselineEl);
+
+ // Convert to mV
+ signalAmp *= convert;
+ // Add ADC baseline in mV
+ signalAmp += baseline;
+
+ // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
+ // signal is larger than fADCinRange
+ Short_t adc = 0;
+ if (signalAmp >= simParam->GetADCinRange()) {
+ adc = ((Short_t) simParam->GetADCoutRange());
+ }
+ else {
+ adc = TMath::Nint(signalAmp * adcConvert);
+ }
+
+ // Saving all digits
+ digits->SetData(row,col,time,adc);
+
+ } // for: time
+
+ } // for: col
+ } // for: row
+
+ // Run the digital processing in the MCM
+ RunDigitalProcessing(digits, det);
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::Signal2SDigits(Int_t det, AliTRDarraySignal *signals)
+{
+ //
+ // Converts the sampled electron signals to s-digits
+ //
+
+ AliDebug(1,Form("Start converting signals to s-digits for detector=%d",det));
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
+ return kFALSE;
+ }
+
+ Int_t row = 0;
+ Int_t col = 0;
+ Int_t time = 0;
+
+ Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
+ Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
+
+ // Get the container for the digits of this detector
+
+ if (!fDigitsManager->HasSDigits()) {
+ AliError("Digits manager has no s-digits");
+ return kFALSE;
+ }
+
+ AliTRDarraySignal *digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
+ // Allocate memory space for the digits buffer
+ if (!digits->HasData()) {
+ digits->Allocate(nRowMax,nColMax,nTimeTotal);
+ }
+
+ // Create the sdigits for this chamber
+ for (row = 0; row < nRowMax; row++ ) {
+ for (col = 0; col < nColMax; col++ ) {
+ for (time = 0; time < nTimeTotal; time++) {
+ digits->SetData(row,col,time,signals->GetData(row,col,time));
+ } // for: time
+ } // for: col
+ } // for: row
+
+ 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::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;
+
+ AliTRDSimParam *simParam = AliTRDSimParam::Instance();
+ if (!simParam) {
+ AliFatal("Could not get simulation parameters");
+ return kFALSE;
+ }
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
+ return kFALSE;
+ }
+
+ Int_t iDict = 0;
+ Int_t jDict = 0;
+
+ AliTRDarraySignal *digitsA;
+ AliTRDarraySignal *digitsB;
+ AliTRDarrayDictionary *dictionaryA[kNDict];
+ AliTRDarrayDictionary *dictionaryB[kNDict];
+
+ AliTRDdigitsManager *mergeSDigitsManager = 0x0;
+ // Get the first s-digits
+ fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
+ if (!fSDigitsManager) {
+ AliError("No SDigits manager");
+ return kFALSE;
+ }
+
+ // Loop through the other sets of s-digits
+ mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(fSDigitsManager);
+
+ if (mergeSDigitsManager) {
+ AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
+ }
+ else {
+ AliDebug(1,"Only one input file.");
+ }
+
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
+ Int_t iMerge = 0;
+
+ while (mergeSDigitsManager) {
+
+ iMerge++;
+
+ // Loop through the detectors
+ for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
+
+ Int_t nRowMax = fGeo->GetPadPlane(iDet)->GetNrows();
+ Int_t nColMax = fGeo->GetPadPlane(iDet)->GetNcols();
+
+ // Loop through the pixels of one detector and add the signals
+ digitsA = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(iDet);
+ digitsB = (AliTRDarraySignal *) mergeSDigitsManager->GetSDigits(iDet);
+ digitsA->Expand();
+ if (!digitsA->HasData()) continue;
+ digitsB->Expand();
+ if (!digitsB->HasData()) continue;
+
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryA[iDict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(iDet,iDict);
+ dictionaryB[iDict] = (AliTRDarrayDictionary *) 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) {
+
+ AliDebug(1,Form("Merge detector %d of input no.%d",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
+ Float_t ampA = digitsA->GetData(iRow,iCol,iTime);
+ Float_t ampB = digitsB->GetData(iRow,iCol,iTime);
+ ampA += ampB;
+ digitsA->SetData(iRow,iCol,iTime,ampA);
+
+ // Add the mask to the track id if defined.
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ Int_t trackB = dictionaryB[iDict]->GetData(iRow,iCol,iTime);
+ if ((fMasks) && (trackB > 0)) {
+ for (jDict = 0; jDict < kNDict; jDict++) {
+ Int_t trackA = dictionaryA[iDict]->GetData(iRow,iCol,iTime);
+ if (trackA == 0) {
+ trackA = trackB + fMasks[iMerge];
+ dictionaryA[iDict]->SetData(iRow,iCol,iTime,trackA);
+ } // if: track A == 0
+ } // for: jDict
+ } // if: fMasks and trackB > 0
+ } // for: iDict
+
+ } // for: iTime
+ } // for: iCol
+ } // for: iRow
+
+ } // if: doMerge
+
+ mergeSDigitsManager->RemoveDigits(iDet);
+ mergeSDigitsManager->RemoveDictionaries(iDet);
+
+ if (fCompress) {
+ digitsA->Compress(0);
+ for (iDict = 0; iDict < kNDict; iDict++) {
+ dictionaryA[iDict]->Compress();
+ }
+ }
+
+ } // for: detectors
+
+ // The next set of s-digits
+ mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(mergeSDigitsManager);
+
+ } // while: mergeDigitsManagers
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::ConvertSDigits()
+{
+ //
+ // Converts s-digits to normal digits
+ //
+
+ AliTRDarraySignal *digitsIn = 0x0;
+
+ if (!fSDigitsManager->HasSDigits()) {
+ AliError("No s-digits in digits manager");
+ return kFALSE;
+ }
+
+ // Loop through the detectors
+ for (Int_t det = 0; det < AliTRDgeometry::Ndet(); det++) {
+
+ // Get the merged s-digits (signals)
+ digitsIn = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(det);
+ if (!digitsIn->HasData()) {
+ AliDebug(2,Form("No digits for det=%d",det));
+ continue;
+ }
+
+ // Convert the merged sdigits to digits
+ if (!Signal2ADC(det,digitsIn)) {
+ continue;
}
- // Compress the arrays
- digits->Compress(1,0);
- for (iDict = 0; iDict < kNDict; iDict++) {
- dictionary[iDict]->Compress(1,0);
+ // Copy the dictionary information to the output array
+ if (!CopyDictionary(det)) {
+ continue;
}
- totalSizeDigits += digits->GetSize();
- totalSizeDict0 += dictionary[0]->GetSize();
- totalSizeDict1 += dictionary[1]->GetSize();
- totalSizeDict2 += dictionary[2]->GetSize();
+ // Delete
+ fSDigitsManager->RemoveDigits(det);
+ fSDigitsManager->RemoveDictionaries(det);
- 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 (fCompress) signals->Compress(1,0);
+ // Compress the arrays
+ CompressOutputArrays(det);
- }
+ } // for: detector numbers
- 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;
+
+}
+//_____________________________________________________________________________
+Bool_t AliTRDdigitizer::CopyDictionary(Int_t det)
+{
+ //
+ // Copies the dictionary information from the s-digits arrays
+ // to the output arrays
+ //
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("Could not get calibration object");
+ return kFALSE;
+ }
+
+ AliDebug(1,Form("Start copying dictionaries for detector=%d",det));
+
+ const Int_t kNDict = AliTRDdigitsManager::kNDict;
+ AliTRDarrayDictionary *dictionaryIn[kNDict];
+ AliTRDarrayDictionary *dictionaryOut[kNDict];
+
+ Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
+ Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
+
+ Int_t row = 0;
+ Int_t col = 0;
+ Int_t time = 0;
+ Int_t dict = 0;
+
+ for (dict = 0; dict < kNDict; dict++) {
+
+ dictionaryIn[dict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(det,dict);
+ dictionaryIn[dict]->Expand();
+ dictionaryOut[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
+ dictionaryOut[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
+
+ for (row = 0; row < nRowMax; row++) {
+ for (col = 0; col < nColMax; col++) {
+ for (time = 0; time < nTimeTotal; time++) {
+ Int_t track = dictionaryIn[dict]->GetData(row,col,time);
+ dictionaryOut[dict]->SetData(row,col,time,track);
+ } // for: time
+ } // for: col
+ } // for: row
+
+ } // for: dictionaries
+
return kTRUE;
}
//_____________________________________________________________________________
-Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector)
+void AliTRDdigitizer::CompressOutputArrays(Int_t det)
{
//
- // Checks whether a detector is enabled
+ // Compress the output arrays
//
- if ((fTRD->GetSensChamber() >= 0) &&
- (fTRD->GetSensChamber() != chamber)) return kFALSE;
- if ((fTRD->GetSensPlane() >= 0) &&
- (fTRD->GetSensPlane() != plane)) return kFALSE;
- if ( fTRD->GetSensSector() >= 0) {
- Int_t sens1 = fTRD->GetSensSector();
- Int_t sens2 = sens1 + fTRD->GetSensSectorRange();
- sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect()))
- * AliTRDgeometry::Nsect();
- if (sens1 < sens2) {
- if ((sector < sens1) || (sector >= sens2)) return kFALSE;
+ const Int_t kNDict = AliTRDdigitsManager::kNDict;
+ AliTRDarrayDictionary *dictionary = 0x0;
+
+ if (fCompress) {
+
+ if (!fSDigits) {
+ AliTRDarrayADC *digits = 0x0;
+ digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
+ digits->Compress();
}
- else {
- if ((sector < sens1) && (sector >= sens2)) return kFALSE;
+
+ if (fSDigits) {
+ AliTRDarraySignal *digits = 0x0;
+ digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
+ digits->Compress(0);
}
- }
- return kTRUE;
+ for (Int_t dict = 0; dict < kNDict; dict++) {
+ dictionary = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
+ dictionary->Compress();
+ }
+
+ }
}
//_____________________________________________________________________________
-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;
- }
+ // Write parameters
+ fRunLoader->CdGAFile();
// 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[7];
- 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::InitOutput(Int_t iEvent)
{
//
- // Defines a new pad response function
+ // Initializes the output branches
//
- if (fPRF) delete fPRF;
- fPRF = prf;
+ fEvent = iEvent;
+
+ if (!fRunLoader) {
+ AliError("Run Loader is NULL");
+ return;
+ }
-}
+ AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
+ if (!loader) {
+ AliError("Can not get TRD loader from Run Loader");
+ return;
+ }
+ TTree *tree = 0;
+
+ if (fSDigits) {
+ // If we produce SDigits
+ tree = loader->TreeS();
+ if (!tree) {
+ loader->MakeTree("S");
+ tree = loader->TreeS();
+ }
+ }
+ else {
+ // If we produce Digits
+ tree = loader->TreeD();
+ if (!tree) {
+ loader->MakeTree("D");
+ tree = loader->TreeD();
+ }
+ }
+ fDigitsManager->SetEvent(iEvent);
+ fDigitsManager->MakeBranch(tree);
+
+}
+
//_____________________________________________________________________________
-void AliTRDdigitizer::SetTRF(TF1 *trf)
+Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
+ , Double_t &lRow, Double_t &lCol, Double_t &lTime)
{
//
- // Defines a new time response function
+ // Applies the diffusion smearing to the position of a single electron.
+ // Depends on absolute drift length.
//
+
+ Float_t diffL = 0.0;
+ Float_t diffT = 0.0;
+
+ if (AliTRDCommonParam::Instance()->GetDiffCoeff(diffL,diffT,vdrift)) {
- if (fTRF) delete fTRF;
- fTRF = trf;
+ Float_t driftSqrt = TMath::Sqrt(absdriftlength);
+ Float_t sigmaT = driftSqrt * diffT;
+ Float_t sigmaL = driftSqrt * diffL;
+ lRow = gRandom->Gaus(lRow ,sigmaT);
+ lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
+ lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
+
+ return 1;
+
+ }
+ else {
+
+ return 0;
+
+ }
}
//_____________________________________________________________________________
-Double_t TRFlandau(Double_t *x, Double_t *par)
+Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
+{
+ //
+ // Returns the Lorentz factor
+ //
+
+ Double_t omegaTau = AliTRDCommonParam::Instance()->GetOmegaTau(vd);
+ Double_t lorentzFactor = 1.0;
+ if (AliTRDCommonParam::Instance()->ExBOn()) {
+ lorentzFactor = 1.0 / (1.0 + omegaTau*omegaTau);
+ }
+
+ return lorentzFactor;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
{
+ //
+ // Applies E x B effects to the position of a single electron.
+ // Depends on signed drift length.
+ //
- Double_t xx = x[0];
- Double_t landau = par[0] * TMath::Landau(xx,par[1],par[2]);
+ lCol = lCol
+ + AliTRDCommonParam::Instance()->GetOmegaTau(vdrift)
+ * driftlength;
+
+ return 1;
+
+}
- return landau;
+//_____________________________________________________________________________
+void AliTRDdigitizer::RunDigitalProcessing(AliTRDarrayADC *digits, Int_t det)
+{
+ //
+ // Run the digital processing in the TRAP
+ //
+
+ AliTRDfeeParam *feeParam = AliTRDfeeParam::Instance();
+
+ //Create and initialize the mcm object
+ AliTRDmcmSim* mcmfast = new AliTRDmcmSim();
+
+ //Call the methods in the mcm class using the temporary array as input
+ for(Int_t rob = 0; rob < digits->GetNrow() / 4; rob++)
+ {
+ for(Int_t mcm = 0; mcm < 16; mcm++)
+ {
+ mcmfast->Init(det, rob, mcm);
+ mcmfast->SetData(digits);
+ mcmfast->Filter();
+ if (feeParam->GetTracklet())
+ mcmfast->Tracklet();
+ mcmfast->ZSMapping();
+ mcmfast->WriteData(digits);
+ }
+ }
+ delete mcmfast;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff