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6740ab97 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
4c475d27 | 15 | |
88cb7938 | 16 | /* $Id$ */ |
ef0750c2 | 17 | |
88cb7938 | 18 | #include <Riostream.h> |
94de3818 | 19 | |
88cb7938 | 20 | #include <TDirectory.h> |
ef51244a | 21 | |
a8859328 | 22 | #include "AliRunLoader.h" |
23 | #include "AliRun.h" | |
6fc133d2 | 24 | #include "AliSTARTLoader.h" |
6740ab97 | 25 | #include "AliSTARTdigit.h" |
121a60bd | 26 | #include "AliSTARTReconstructor.h" |
affef71b | 27 | #include <AliESD.h> |
db173afc | 28 | #include <TClonesArray.h> |
29 | #include "AliSTARTRecPoint.h" | |
30 | #include "AliRawReader.h" | |
31 | #include "AliSTARTRawReader.h" | |
32 | #include "AliLog.h" | |
121a60bd | 33 | ClassImp(AliSTARTReconstructor) |
6740ab97 | 34 | |
db173afc | 35 | void AliSTARTReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const |
121a60bd | 36 | { |
db173afc | 37 | //START raw data-> digits conversion |
38 | // reconstruct time information from raw data | |
39 | AliSTARTRawReader myrawreader(rawReader,digitsTree); | |
40 | myrawreader.NextThing(); | |
121a60bd | 41 | } |
db173afc | 42 | void AliSTARTReconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const |
43 | { | |
44 | // START digits reconstruction | |
45 | // STARTRecPoint writing | |
46 | ||
47 | AliDebug(1,Form("Start DIGITS reconstruction ")); | |
48 | Int_t channelWigth=25; //ps | |
49 | TArrayI* fSumMult = new TArrayI(6); | |
50 | Float_t ph2mV = 150./500.; | |
51 | Float_t mV2channel=200000/(25*25); //5V -> 200ns | |
52 | ||
53 | TBranch *brDigits=digitsTree->GetBranch("START"); | |
54 | AliSTARTdigit *fDigits = new AliSTARTdigit(); | |
55 | if (brDigits) { | |
56 | brDigits->SetAddress(&fDigits); | |
57 | }else{ | |
58 | cerr<<"EXEC Branch START digits not found"<<endl; | |
59 | return; | |
60 | } | |
61 | brDigits->GetEntry(0); | |
62 | Int_t besttimeright=channelWigth * (fDigits->BestTimeRight()); | |
63 | Int_t besttimeleft=channelWigth * (fDigits->BestTimeLeft()); | |
64 | ||
65 | //folding with experimental time distribution | |
66 | // Float_t c = 29.9792; // cm/ns | |
67 | Float_t c = 0.0299792; // cm/ps | |
68 | Float_t lenr=TMath::Sqrt(350*350 + 6.5*6.5); | |
69 | Float_t lenl=TMath::Sqrt(69.7*69.7 + 6.5*6.5); | |
70 | Float_t timeDiff=channelWigth * (fDigits->TimeDiff()); | |
71 | Int_t meanTime=channelWigth * (fDigits->MeanTime()); | |
72 | Float_t ds=(c*(timeDiff)-(lenr-lenl))/2; | |
73 | AliDebug(2,Form(" timediff in ns %f real point%f",timeDiff,ds)); | |
74 | ||
121a60bd | 75 | |
db173afc | 76 | fDigits->GetSumMult(*fSumMult); |
77 | Int_t multipl[6]; | |
78 | for (Int_t i=0; i<6; i++) | |
79 | { | |
80 | Float_t mult=Float_t (fSumMult->At(i)); | |
81 | Float_t realMultmV=TMath::Exp(mult/mV2channel); | |
82 | multipl[i]=Int_t ((realMultmV/ph2mV)/500+0.5); | |
83 | } | |
84 | AliDebug(2,Form(" multiplicity Abs side %i multiplicity non-Abs side %i",multipl[1],multipl[2])); | |
85 | ||
86 | AliSTARTRecPoint* frecpoints= new AliSTARTRecPoint (); | |
87 | clustersTree->Branch( "START", "AliSTARTRecPoint" ,&frecpoints, 405,1); | |
88 | frecpoints->SetTimeBestRight(besttimeright); | |
89 | frecpoints->SetTimeBestLeft(besttimeleft); | |
90 | frecpoints->SetVertex(ds); | |
91 | frecpoints->SetMeanTime(meanTime); | |
92 | frecpoints->SetMult(multipl[0]); | |
93 | frecpoints->SetMultA(multipl[2]); | |
94 | frecpoints->SetMultC(multipl[1]); | |
95 | ||
96 | clustersTree->Fill(); | |
97 | } | |
98 | ||
99 | ||
100 | void AliSTARTReconstructor::FillESD(AliRunLoader* runLoader, AliESD *pESD) const | |
6740ab97 | 101 | { |
db173afc | 102 | |
f3ed336b | 103 | /*************************************************** |
104 | Resonstruct digits to vertex position | |
105 | ****************************************************/ | |
db173afc | 106 | |
107 | // Float_t c = 0.3; //speed of light mm/ps | |
108 | // Float_t Zposition=0; | |
109 | ||
110 | if (!runLoader) { | |
111 | AliError("Reconstruct >> No run loader"); | |
6fc133d2 | 112 | return; |
113 | } | |
db173afc | 114 | |
115 | AliDebug(1,Form("Start FillESD START")); | |
affef71b | 116 | |
db173afc | 117 | AliSTARTLoader* pStartLoader = (AliSTARTLoader*) runLoader->GetLoader("STARTLoader"); |
6fc133d2 | 118 | |
db173afc | 119 | pStartLoader->LoadRecPoints("READ"); |
120 | ||
121 | TTree *treeR = pStartLoader->TreeR(); | |
122 | ||
123 | AliSTARTRecPoint* frecpoints= new AliSTARTRecPoint (); | |
124 | if (!frecpoints) { | |
125 | AliError("Reconstruct Fill ESD >> no recpoints found"); | |
6fc133d2 | 126 | return; |
127 | } | |
a8859328 | 128 | |
db173afc | 129 | AliDebug(1,Form("Start FillESD START")); |
130 | TBranch *brRec = treeR->GetBranch("START"); | |
131 | if (brRec) { | |
132 | brRec->SetAddress(&frecpoints); | |
133 | }else{ | |
134 | cerr<<"EXEC Branch START rec not found"<<endl; | |
135 | exit(111); | |
136 | } | |
137 | ||
138 | brRec->GetEntry(0); | |
139 | Float_t Zposition=frecpoints->GetVertex(); | |
6fc133d2 | 140 | |
db173afc | 141 | pESD->SetT0zVertex(Zposition); |
142 | pStartLoader->UnloadRecPoints(); | |
6fc133d2 | 143 | |
db173afc | 144 | } // vertex in 3 sigma |
6740ab97 | 145 | |
146 | ||
147 | ||
148 | ||
7115262b | 149 | |
150 |