1 /**************************************************************************
2 * Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 // This class decodes the stream of ALTRO samples to extract
19 // the PHOS "digits" of current event.
22 // AliRawReader* rf = new AliRawReaderDate("2006run2211.raw");
23 // AliPHOSRawDecoder dc(rf);
24 // while (rf->NextEvent()) {
25 // dc.SetOldRCUFormat(kTRUE);
26 // dc.SubtractPedestals(kTRUE);
27 // while ( dc.NextDigit() ) {
28 // Int_t module = dc.GetModule();
29 // Int_t column = dc.GetColumn();
30 // Int_t row = dc.GetRow();
31 // Double_t amplitude = dc.GetEnergy();
32 // Double_t time = dc.GetTime();
33 // Bool_t IsLowGain = dc.IsLowGain();
38 // Author: Boris Polichtchouk
40 // --- ROOT system ---
43 // --- AliRoot header files ---
44 #include "AliPHOSRawDecoder.h"
45 #include "AliPHOSPulseGenerator.h"
47 ClassImp(AliPHOSRawDecoder)
49 //-----------------------------------------------------------------------------
50 AliPHOSRawDecoder::AliPHOSRawDecoder():
51 fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1),
52 fLowGainFlag(kFALSE),fOverflow(kFALSE),fSamples(0),fTimes(0),fPulseGenerator(0)
54 //Default constructor.
57 //-----------------------------------------------------------------------------
58 AliPHOSRawDecoder::AliPHOSRawDecoder(AliRawReader* rawReader, AliAltroMapping **mapping):
59 fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1),
60 fLowGainFlag(kFALSE),fOverflow(kFALSE),fSamples(0),fTimes(0),fPulseGenerator(0)
62 //Construct a decoder object.
63 //Is is user responsibility to provide next raw event
64 //using AliRawReader::NextEvent().
66 fRawReader = rawReader;
67 fCaloStream = new AliCaloRawStream(rawReader,"PHOS",mapping);
68 fCaloStream->SetOldRCUFormat(kFALSE);
69 fSamples = new TArrayI(100);
70 fTimes = new TArrayI(100);
71 fPulseGenerator = new AliPHOSPulseGenerator();
74 //-----------------------------------------------------------------------------
75 AliPHOSRawDecoder::~AliPHOSRawDecoder()
79 if(fCaloStream){ delete fCaloStream; fCaloStream=0;}
80 if(fSamples){ delete fSamples; fSamples=0 ;}
81 if(fTimes){ delete fTimes; fTimes=0 ;}
82 if(fPulseGenerator){ delete fPulseGenerator; fPulseGenerator=0 ;}
85 //-----------------------------------------------------------------------------
86 AliPHOSRawDecoder::AliPHOSRawDecoder(const AliPHOSRawDecoder &phosDecoder ):
87 fRawReader(phosDecoder.fRawReader),fCaloStream(phosDecoder.fCaloStream),
88 fPedSubtract(phosDecoder.fPedSubtract),
89 fEnergy(phosDecoder.fEnergy),fTime(phosDecoder.fTime),
90 fModule(phosDecoder.fModule),fColumn(phosDecoder.fColumn),
91 fRow(phosDecoder.fRow),fLowGainFlag(phosDecoder.fLowGainFlag),
92 fOverflow(phosDecoder.fOverflow),fSamples(phosDecoder.fSamples),
93 fTimes(phosDecoder.fTimes),fPulseGenerator(phosDecoder.fPulseGenerator)
98 //-----------------------------------------------------------------------------
99 AliPHOSRawDecoder& AliPHOSRawDecoder::operator = (const AliPHOSRawDecoder &phosDecode)
101 //Assignment operator.
103 if(this != &phosDecode) {
104 fRawReader = phosDecode.fRawReader;
106 if(fCaloStream) delete fCaloStream;
107 fCaloStream = phosDecode.fCaloStream;
109 fEnergy = phosDecode.fEnergy;
110 fTime = phosDecode.fTime;
111 fModule = phosDecode.fModule;
112 fColumn = phosDecode.fColumn;
113 fRow = phosDecode.fRow;
114 fLowGainFlag = phosDecode.fLowGainFlag;
115 fOverflow = phosDecode.fOverflow ;
117 if(fSamples) delete fSamples;
118 fSamples = phosDecode.fSamples;
120 if(fTimes) delete fTimes;
121 fTimes = phosDecode.fTimes;
123 if(fPulseGenerator) delete fPulseGenerator;
124 fPulseGenerator = phosDecode.fPulseGenerator;
130 //-----------------------------------------------------------------------------
132 Bool_t AliPHOSRawDecoder::NextDigit()
134 //Extract an energy deposited in the crystal,
135 //crystal' position (module,column,row),
136 //time and gain (high or low).
138 AliCaloRawStream* in = fCaloStream;
141 Int_t mxSmps = fSamples->GetSize();
146 Float_t baseLine = 1.0;
147 const Int_t nPreSamples = 10;
150 while ( in->Next() ) {
153 tLength = in->GetTimeLength();
155 fSamples->Set(tLength);
159 // Fit the full sample
160 if(in->IsNewHWAddress() && iBin>0) {
164 // Temporarily we take the energy as a maximum amplitude
165 // and the pedestal from the 0th point (30 Aug 2006).
166 // Time is not evaluated for the moment (12.01.2007).
167 // Take is as a first time bin multiplied by the sample tick time
171 fEnergy -= (Double_t)(pedMean/nPed); // pedestal subtraction
176 fEnergy *= fPulseGenerator->GetRawFormatHighLowGainFactor(); // *16
178 if (fEnergy < baseLine) fEnergy = 0;
184 fLowGainFlag = in->IsLowGain();
185 fTime = fPulseGenerator->GetRawFormatTimeTrigger() * in->GetTime();
186 fModule = in->GetModule()+1;
187 fRow = in->GetRow() +1;
188 fColumn = in->GetColumn()+1;
190 //Calculate pedestal if necessary
191 if(fPedSubtract && in->GetTime() < nPreSamples) {
192 pedMean += in->GetSignal();
195 if((Double_t)in->GetSignal() > fEnergy) fEnergy = (Double_t)in->GetSignal();