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8d72d1c2 | 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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
94249139 | 17 | /*********************************************************************** |
18 | * this class doing calibration during reconstruction | |
19 | * 2 steps: | |
20 | * - equalizing channels | |
21 | * - applying walk corrections | |
22 | * | |
23 | * Alla.Maevskaya@cern.ch | |
24 | * | |
25 | **********************************************************************/ | |
26 | ||
27 | //#include <Riostream.h> | |
8d72d1c2 | 28 | |
29 | #include "AliLog.h" | |
30 | #include "AliT0Parameters.h" | |
31 | #include "AliT0Calibrator.h" | |
8d72d1c2 | 32 | #include <TGraph.h> |
7d95281b | 33 | #include <TH1F.h> |
8d72d1c2 | 34 | |
35 | ClassImp(AliT0Calibrator) | |
36 | ||
37 | //____________________________________________________________________ | |
9e1b06a2 | 38 | AliT0Calibrator::AliT0Calibrator():TNamed(), |
8d72d1c2 | 39 | fChannelWidth(0), |
74adb36a | 40 | fWalk(0) |
8d72d1c2 | 41 | { |
94249139 | 42 | //constructor |
43 | ||
8d72d1c2 | 44 | AliT0Parameters* param = AliT0Parameters::Instance(); |
45 | param->Init(); | |
46 | ||
47 | fChannelWidth = param->GetChannelWidth() ; | |
48 | ||
49 | for (Int_t i=0; i<24; i++){ | |
50 | fTimeDelayCFD[i] = Int_t (param->GetTimeDelayCFD(i)); | |
8d72d1c2 | 51 | TGraph* fu = param ->GetWalk(i); |
52 | fWalk.AddAtAndExpand(fu,i); | |
53 | } | |
54 | ||
55 | // | |
56 | } | |
57 | //_____________________________________________________________________________ | |
58 | ||
9e1b06a2 | 59 | AliT0Calibrator::AliT0Calibrator(const AliT0Calibrator &r): TNamed(), |
8d72d1c2 | 60 | fChannelWidth(0), |
74adb36a | 61 | fWalk(0) |
8d72d1c2 | 62 | |
63 | { | |
64 | // | |
65 | // AliT0calibartor copy constructor | |
66 | // | |
67 | ||
68 | ((AliT0Calibrator &) r).Copy(*this); | |
69 | ||
70 | } | |
71 | ||
72 | //_____________________________________________________________________________ | |
73 | AliT0Calibrator &AliT0Calibrator::operator=(const AliT0Calibrator &r) | |
74 | { | |
75 | // | |
76 | // Assignment operator | |
77 | // | |
78 | ||
79 | if (this != &r) ((AliT0Calibrator &) r).Copy(*this); | |
80 | return *this; | |
81 | ||
82 | } | |
83 | ||
84 | ||
85 | ||
86 | //____________________________________________________________________ | |
87 | Int_t AliT0Calibrator::WalkCorrection(Int_t ipmt, Int_t qt, Int_t time) | |
88 | { | |
89 | //slewing correcion and equalizing channels | |
90 | ||
91 | Int_t timeEq=0, timeWalk=0; | |
92 | TGraph *fu1=(TGraph*) fWalk.At(ipmt); | |
93 | Float_t walk=fu1->Eval(Float_t(qt)); | |
94 | TH1F*hr=fu1->GetHistogram(); | |
95 | Float_t maxValue=hr->GetMaximum(50); | |
9e1b06a2 | 96 | timeWalk = time + Int_t((maxValue-walk)/fChannelWidth) ; |
8d72d1c2 | 97 | timeEq= timeWalk - (fTimeDelayCFD[ipmt]-fTimeDelayCFD[0]); |
9e1b06a2 | 98 | AliDebug(10,Form(" time before %i timeWalk %i , qt %i timeEq %i \n ", |
74adb36a | 99 | time,timeWalk, qt, timeEq )); |
8d72d1c2 | 100 | return timeEq; |
101 | } | |
102 | ||
103 | ||
104 |