Make sure that histograms are obtained from output list in
[u/mrichter/AliRoot.git] / PWG2 / FORWARD / analysis2 / AliFMDCorrections.h
CommitLineData
7e4038b5 1#ifndef ALIROOT_PWG2_FORWARD_ANALYSIS2_ALIFMDCORRECTIONS_H
2#define ALIROOT_PWG2_FORWARD_ANALYSIS2_ALIFMDCORRECTIONS_H
3#include <TNamed.h>
4#include <TList.h>
5#include "AliForwardUtil.h"
6class AliESDFMD;
7class TH2D;
8
9/**
10 * This class calculates the inclusive charged particle density
11 * in each for the 5 FMD rings.
12 *
13 * @par Input:
14 * - AliESDFMD object possibly corrected for sharing
15 *
16 * @par Output:
17 * - 5 RingHistos objects - each with a number of vertex dependent
18 * 2D histograms of the inclusive charge particle density
19 *
20 * @par Corrections used:
21 * - AliFMDAnaCalibBackgroundCorrection
22 * - AliFMDAnaCalibEventSelectionEfficiency
23 * - AliFMDAnaCalibSharingEfficiency
24 *
25 * @ingroup pwg2_forward_analysis
26 */
27class AliFMDCorrections : public TNamed
28{
29public:
30 /**
31 * Constructor
32 */
33 AliFMDCorrections();
34 /**
35 * Constructor
36 *
37 * @param name Name of object
38 */
39 AliFMDCorrections(const char* name);
40 /**
41 * Copy constructor
42 *
43 * @param o Object to copy from
44 */
45 AliFMDCorrections(const AliFMDCorrections& o);
46 /**
47 * Destructor
48 */
49 virtual ~AliFMDCorrections();
50 /**
51 * Assignement operator
52 *
53 * @param o Object to assign from
54 *
55 * @return Reference to this object
56 */
57 AliFMDCorrections& operator=(const AliFMDCorrections&);
58 /**
59 * Do the calculations
60 *
61 * @param hists Cache of histograms
62 * @param vtxBin Vertex bin
63 *
64 * @return true on successs
65 */
66 virtual Bool_t Correct(AliForwardUtil::Histos& hists, Int_t vtxBin);
67 /**
68 * Scale the histograms to the total number of events
69 *
70 * @param nEvents Number of events
71 */
9d99b0dd 72 void ScaleHistograms(TList* dir, Int_t nEvents);
7e4038b5 73 /**
74 * Output diagnostic histograms to directory
75 *
76 * @param dir List to write in
77 */
9d99b0dd 78 void DefineOutput(TList* dir);
7e4038b5 79protected:
80 /**
81 * Internal data structure to keep track of the histograms
82 */
9d99b0dd 83 struct RingHistos : public AliForwardUtil::RingHistos
7e4038b5 84 {
85 /**
86 * Default CTOR
87 */
88 RingHistos();
89 /**
90 * Constructor
91 *
92 * @param d detector
93 * @param r ring
94 */
95 RingHistos(UShort_t d, Char_t r);
96 /**
97 * Copy constructor
98 *
99 * @param o Object to copy from
100 */
101 RingHistos(const RingHistos& o);
102 /**
103 * Assignment operator
104 *
105 * @param o Object to assign from
106 *
107 * @return Reference to this
108 */
109 RingHistos& operator=(const RingHistos& o);
110 /**
111 * Destructor
112 */
113 ~RingHistos();
114 void Output(TList* dir);
9d99b0dd 115 /**
116 * Scale the histograms to the total number of events
117 *
118 * @param nEvents Number of events
119 */
120 void ScaleHistograms(TList* dir, Int_t nEvents);
7e4038b5 121 TH2D* fDensity; // Distribution primary Nch
9d99b0dd 122 ClassDef(RingHistos,1);
7e4038b5 123 };
124 /**
125 * Get the ring histogram container
126 *
127 * @param d Detector
128 * @param r Ring
129 *
130 * @return Ring histogram container
131 */
132 RingHistos* GetRingHistos(UShort_t d, Char_t r) const;
133
134 TList fRingHistos; // List of histogram containers
135 Double_t fMultCut; // Low cut on scaled energy loss
136
137 ClassDef(AliFMDCorrections,1); // Calculate Nch density
138};
139
140#endif
141// Local Variables:
142// mode: C++
143// End:
144