* provided "as is" without express or implied warranty. *
**************************************************************************/
/* $Id$ */
+/* History of cvs commits:
+ *
+ * $Log$
+ * Revision 1.89 2005/05/28 12:10:07 schutz
+ * Copy constructor is corrected (by T.P.)
+ *
+ */
//_________________________________________________________________________
// Base Class for PHOS description:
#include <TFolder.h>
#include <TTree.h>
#include <TVirtualMC.h>
+#include <TH1F.h>
+#include <TF1.h>
#include <TRandom.h>
// --- Standard library ---
#include "AliPHOSSDigitizer.h"
#include "AliPHOSDigit.h"
#include "AliAltroBuffer.h"
+#include "AliLog.h"
ClassImp(AliPHOS)
+
+Double_t AliPHOS::fgCapa = 1.; // 1pF
+Int_t AliPHOS::fgOrder = 2 ;
+Double_t AliPHOS::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
+Double_t AliPHOS::fgTimePeak = 4.1E-6 ; // 4 micro seconds
+Double_t AliPHOS::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
+
//____________________________________________________________________________
-AliPHOS:: AliPHOS() : AliDetector()
+ AliPHOS:: AliPHOS() : AliDetector()
{
// Default ctor
- fName="PHOS";
- fQATask = 0;
- fTreeQA = 0;
- fDebug = 0;
- fRan = new TRandom(123456) ;
+ fName = "PHOS" ;
+
}
//____________________________________________________________________________
-AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
+AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
{
// ctor : title is used to identify the layout
- fQATask = 0;
- fTreeQA = 0;
- fDebug = 0;
- fRan = new TRandom(123456) ;
+ fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
+ fHighGain = 6.64 ;
+ fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
+ fLowGainOffset = GetGeometry()->GetNModules() + 1 ;
+ // offset added to the module id to distinguish high and low gain data
}
//____________________________________________________________________________
AliPHOS::~AliPHOS()
{
- delete fRan ;
}
//____________________________________________________________________________
-void AliPHOS::Copy(AliPHOS & phos)
+void AliPHOS::Copy(TObject &obj)const
{
// copy method to be used byy the cpy ctor
- TObject::Copy(phos) ;
- // fQATask = AliPHOSQAChecker::Copy(*(phos.fQATask)) ;
- phos.fTreeQA = fTreeQA->CloneTree() ;
+ TObject::Copy(obj);
+
+ AliPHOS &phos = static_cast<AliPHOS &>(obj);
+
+ phos.fHighCharge = fHighCharge ;
+ phos.fHighGain = fHighGain ;
+ phos.fHighLowGainFactor = fHighLowGainFactor ;
+ phos.fLowGainOffset = fLowGainOffset;
}
//____________________________________________________________________________
AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
- // --- Textolitn ---
+ // --- Textolith ---
Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
//--- FR4 ---
- Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
- Float_t zFR[3] = {14., 8., 8.875} ;
- Float_t wFR[3] = {.28, .32, .4} ;
+ Float_t aFR[4] = {16.0, 28.09, 12.011, 1.00794} ;
+ Float_t zFR[4] = {8.0, 14.0, 6.0, 1.0} ;
+ Float_t wFR[4] = {292.0, 68.0, 462.0, 736.0} ;
Float_t dFR = 1.8 ;
- AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
+ AliMixture(9, "FR4$", aFR, zFR, dFR, -4, wFR) ;
// --- The Composite Material for micromegas (so far polyetylene) ---
Float_t aCM[2] = {12.01, 1.} ;
void AliPHOS::Digits2Raw()
{
// convert digits of the current event to raw data
+
+ AliPHOSLoader * loader = dynamic_cast<AliPHOSLoader*>(fLoader) ;
// get the digits
- AliPHOSGetter * gime = AliPHOSGetter::Instance(AliRunLoader::GetGAliceName()) ;
- if (!gime) {
- Error("Digits2Raw", "PHOS Getter not instantiated") ;
- return ;
- }
- gime->Event(gime->EventNumber(), "D") ;
- TClonesArray* digits = gime->Digits() ;
+ loader->LoadDigits();
+ TClonesArray* digits = loader->Digits() ;
if (!digits) {
- Error("Digits2Raw", "no digits found !");
+ AliError(Form("No digits found !"));
return;
}
+ // get the digitizer
+ loader->LoadDigitizer();
+ AliPHOSDigitizer * digitizer = dynamic_cast<AliPHOSDigitizer *>(loader->Digitizer()) ;
+
// get the geometry
- AliPHOSGeometry* geom = gime->PHOSGeometry();
+ AliPHOSGeometry* geom = GetGeometry();
if (!geom) {
- Error("Digits2Raw", "no geometry found !");
+ AliError(Form("No geometry found !"));
return;
}
// some digitization constants
- const Int_t kDDLOffset = 0x600;
- const Double_t kTimeMax = 1.28E-5;
- const Int_t kTimeBins = 256;
- const Double_t kTimePeak = 2.0E-6;
- const Double_t kTimeRes = 1.5E-6;
- const Int_t kThreshold = 3;
- const Int_t kHighGainFactor = 40;
- const Int_t kHighGainOffset = 0x200;
+ const Int_t kDDLOffset = 0x600; // assigned to PHOS
+ const Int_t kThreshold = 1; // skip digits below this threshold
AliAltroBuffer* buffer = NULL;
Int_t prevDDL = -1;
- Int_t adcValuesLow[kTimeBins];
- Int_t adcValuesHigh[kTimeBins];
+ Int_t adcValuesLow[fkTimeBins];
+ Int_t adcValuesHigh[fkTimeBins];
// loop over digits (assume ordered digits)
for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
- AliPHOSDigit* digit = gime->Digit(iDigit);
+ AliPHOSDigit* digit = dynamic_cast<AliPHOSDigit *>(digits->At(iDigit)) ;
if (digit->GetAmp() < kThreshold)
continue;
Int_t relId[4];
}
// out of time range signal (?)
- if (digit->GetTime() > kTimeMax) {
+ if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
buffer->FillBuffer(digit->GetAmp());
- buffer->FillBuffer(kTimeBins); // time bin
- buffer->FillBuffer(3); // bunch length
+ buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
+ buffer->FillBuffer(3); // bunch length
buffer->WriteTrailer(3, relId[3], relId[2], module); // trailer
- // simulate linear rise and gaussian decay of signal
+ // calculate the time response function
} else {
- Bool_t highGain = kFALSE;
-
- // fill time bin values :
- // 1. the signal starts at the time given by the digit
- // 2. the rise is linear and the maximum is reached kTimePeak after start
- // 3. the decay is gaussian with a sigma of kTimeRes
- // 4. the signal is binned into kTimeBins bins
- for (Int_t iTime = 0; iTime < kTimeBins; iTime++) {
- Double_t time = iTime * kTimeMax/kTimeBins;
- Int_t signal = 0;
- if (time < digit->GetTime() + kTimePeak) { // signal is rising
- signal = static_cast<Int_t>(fRan->Rndm() + digit->GetAmp() *
- (time - digit->GetTime()) / kTimePeak);
- } else { // signal is decaying
- signal = static_cast<Int_t>(fRan->Rndm() + digit->GetAmp() *
- TMath::Gaus(time, digit->GetTime() + kTimePeak, kTimeRes));
- }
- if (signal < 0)
- signal = 0;
- adcValuesLow[iTime] = signal;
- if (signal > 0x3FF) // larger than 10 bits
- adcValuesLow[iTime] = 0x3FF;
- adcValuesHigh[iTime] = signal / kHighGainFactor;
- if (adcValuesHigh[iTime] > 0)
- highGain = kTRUE;
- }
-
- // write low and eventually high gain channel
- buffer->WriteChannel(relId[3], relId[2], module,
- kTimeBins, adcValuesLow, kThreshold);
- if (highGain) {
- buffer->WriteChannel(relId[3], relId[2], module + kHighGainOffset,
- kTimeBins, adcValuesHigh, 1);
- }
+ Double_t energy = 0 ;
+ if ( digit->GetId() <= geom->GetNModules() * geom->GetNCristalsInModule())
+ energy = digit->GetAmp() * digitizer->GetEMCchannel() + digitizer->GetEMCpedestal() ;
+ else
+ energy = digit->GetAmp() * digitizer->GetCPVchannel() + digitizer->GetCPVpedestal() ;
+
+ Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
+
+ if (lowgain)
+ buffer->WriteChannel(relId[3], relId[2], module + fLowGainOffset,
+ GetRawFormatTimeBins(), adcValuesLow, kThreshold);
+ else
+ buffer->WriteChannel(relId[3], relId[2], module,
+ GetRawFormatTimeBins(), adcValuesHigh, kThreshold);
+
}
}
-
+
// write real header and close last file
if (buffer) {
buffer->Flush();
buffer->WriteDataHeader(kFALSE, kFALSE);
delete buffer;
}
-
- gime->PhosLoader()->UnloadDigits();
+
+ loader->UnloadDigits();
}
//____________________________________________________________________________
{
// create summable digits
- AliPHOSSDigitizer* phosDigitizer =
- new AliPHOSSDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
- phosDigitizer->SetEventRange(0, -1) ; // do all the events
- phosDigitizer->ExecuteTask("all") ;
+ AliPHOSSDigitizer phosDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
+ phosDigitizer.SetEventRange(0, -1) ; // do all the events
+ phosDigitizer.ExecuteTask("all") ;
}
//____________________________________________________________________________
return fLoader;
}
+//__________________________________________________________________
+Double_t AliPHOS::RawResponseFunction(Double_t *x, Double_t *par)
+{
+ // Shape of the electronics raw reponse:
+ // It is a semi-gaussian, 2nd order Gamma function of the general form
+ // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
+ // tp : peaking time par[0]
+ // n : order of the function
+ // C : integrating capacitor in the preamplifier
+ // A : open loop gain of the preamplifier
+ // Q : the total APD charge to be measured Q = C * energy
+
+ Double_t signal ;
+ Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
+
+ if (xx < 0 || xx > fgTimeMax)
+ signal = 0. ;
+ else {
+ Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
+ signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
+ }
+ return signal ;
+}
+
+//__________________________________________________________________
+Double_t AliPHOS::RawResponseFunctionMax(Double_t charge, Double_t gain)
+{
+ return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
+ / ( fgCapa * TMath::Exp(fgOrder) ) );
+
+}
+
+//__________________________________________________________________
+Bool_t AliPHOS::RawSampledResponse(const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
+{
+ // for a start time dtime and an amplitude damp given by digit,
+ // calculates the raw sampled response AliPHOS::RawResponseFunction
+
+ const Int_t kRawSignalOverflow = 0x3FF ;
+ Bool_t lowGain = kFALSE ;
+
+ TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
+
+ for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
+ signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
+ signalF.SetParameter(1, GetRawFormatHighGain() ) ;
+ signalF.SetParameter(2, damp) ;
+ signalF.SetParameter(3, dtime) ;
+ Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
+ Double_t signal = signalF.Eval(time) ;
+ if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
+ signal = kRawSignalOverflow ;
+ lowGain = kTRUE ;
+ }
+ adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
+
+ signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
+ signalF.SetParameter(1, GetRawFormatLowGain() ) ;
+ signal = signalF.Eval(time) ;
+ if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
+ signal = kRawSignalOverflow ;
+ adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
+
+ }
+ return lowGain ;
+}
+
//____________________________________________________________________________
void AliPHOS::SetTreeAddress()
{
TBranch *branch;
char branchname[20];
sprintf(branchname,"%s",GetName());
-
// Branch address for hit tree
- TTree *treeH = TreeH();
+ TTree *treeH = TreeH();
if (treeH) {
branch = treeH->GetBranch(branchname);
if (branch)
{
if (fHits == 0x0) fHits= new TClonesArray("AliPHOSHit",1000);
- //Info("SetTreeAddress","<%s> Setting Hits Address",GetName());
+ //AliInfo(Form("<%s> Setting Hits Address",GetName()));
branch->SetAddress(&fHits);
}
}
}
-//____________________________________________________________________________
-void AliPHOS::WriteQA()
-{
-
- // Make TreeQA in the output file.
-
- if(fTreeQA == 0)
- fTreeQA = new TTree("TreeQA", "QA Alarms") ;
- // Create Alarms branches
- Int_t bufferSize = 32000 ;
- Int_t splitlevel = 0 ;
-
- TFolder* topfold = GetLoader()->GetTopFolder(); //get top aliroot folder; skowron
- TString phosqafn(AliConfig::Instance()->GetQAFolderName()+"/"); //get name of QAaut folder relative to top event; skowron
- phosqafn+=GetName(); //hard wired string!!! add the detector name to the pathname; skowron
- TFolder * alarmsF = (TFolder*)topfold->FindObjectAny(phosqafn); //get the folder
-
- if (alarmsF == 0x0)
- {
- Error("WriteQA","Can not find folder with qa alarms");
- return;
- }
- TString branchName(alarmsF->GetName());
- TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
- TString branchTitle = branchName + " QA alarms" ;
- alarmsBranch->SetTitle(branchTitle);
- alarmsBranch->Fill() ;
-
- //fTreeQA->Fill() ;
-}
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff