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7984e5f7 | 1 | // |
2 | // This class inspects the event | |
3 | // | |
4 | #ifndef ALIFMDEVENTINSPECTOR_H | |
5 | #define ALIFMDEVENTINSPECTOR_H | |
8565b10b | 6 | #include <TNamed.h> |
7 | class AliESDEvent; | |
8 | class TH2D; | |
9 | class TH1D; | |
10 | class TH1I; | |
11 | class TAxis; | |
12 | class TList; | |
13 | ||
14 | /** | |
15 | * This class inspects the event | |
16 | * | |
17 | * @par Input: | |
18 | * - AliESDFMD object possibly corrected for sharing | |
19 | * | |
20 | * @par Output: | |
21 | * - A histogram of v_z of events with triggers. | |
22 | * - A histogram of v_z of events with vertex and triggers | |
23 | * - A histogram of trigger counters | |
24 | * | |
25 | * Note, that these are added to the master output list | |
26 | * | |
27 | * @par Corrections used: | |
28 | * - None | |
29 | * | |
9fe74763 | 30 | * @ingroup pwg2_forward_algo |
8565b10b | 31 | */ |
32 | class AliFMDEventInspector : public TNamed | |
33 | { | |
34 | public: | |
35 | /** | |
36 | * Return codes | |
37 | */ | |
38 | enum ECodes { | |
39 | /** all ok */ | |
40 | kOk = 0, | |
41 | /** No ESD event */ | |
42 | kNoEvent = 0x1, | |
43 | /** No triggers found */ | |
44 | kNoTriggers = 0x2, | |
45 | /** No SPD data */ | |
46 | kNoSPD = 0x4, | |
47 | /** No FMD data */ | |
48 | kNoFMD = 0x8, | |
49 | /** No vertex found */ | |
50 | kNoVertex = 0x10, | |
51 | /** Vertex out of range */ | |
52 | kBadVertex = 0x20 | |
53 | }; | |
54 | /** | |
55 | * Trigger bins | |
56 | */ | |
57 | enum ETrgBins { | |
58 | kInel, | |
59 | kInelGt0, | |
60 | kNSD, | |
61 | kEmpty, | |
62 | kA, | |
63 | kB, | |
64 | kC, | |
65 | kE | |
66 | }; | |
0bd4b00f | 67 | /** |
68 | * Collision systems | |
69 | */ | |
70 | enum ECollisionSystem { | |
71 | kUnknown, | |
72 | kPP, | |
73 | kPbPb | |
74 | }; | |
8565b10b | 75 | /** |
76 | * Constructor | |
77 | */ | |
78 | AliFMDEventInspector(); | |
79 | /** | |
80 | * Constructor | |
81 | * | |
82 | * @param name Name of object | |
83 | */ | |
84 | AliFMDEventInspector(const char* name); | |
85 | /** | |
86 | * Copy constructor | |
87 | * | |
88 | * @param o Object to copy from | |
89 | */ | |
90 | AliFMDEventInspector(const AliFMDEventInspector& o); | |
91 | /** | |
92 | * Destructor | |
93 | */ | |
94 | virtual ~AliFMDEventInspector(); | |
95 | /** | |
96 | * Assignement operator | |
97 | * | |
98 | * @param o Object to assign from | |
99 | * | |
100 | * @return Reference to this object | |
101 | */ | |
102 | AliFMDEventInspector& operator=(const AliFMDEventInspector&); | |
103 | ||
104 | /** | |
105 | * Initialize the object | |
106 | * | |
107 | * @param vtxAxis Vertex axis in use | |
108 | */ | |
109 | void Init(const TAxis& vtxAxis); | |
110 | /** | |
111 | * Process the event | |
112 | * | |
113 | * @param event Input event | |
114 | * @param triggers On return, the triggers fired | |
115 | * @param lowFlux On return, true if the event is considered a low-flux | |
116 | * event (according to the setting of fLowFluxCut) | |
0bd4b00f | 117 | * @param ivz On return, the found vertex bin (1-based). A zero |
118 | * means outside of the defined vertex range | |
c389303e | 119 | * @param vz On return, the z position of the interaction |
8565b10b | 120 | * |
121 | * @return 0 (or kOk) on success, otherwise a bit mask of error codes | |
122 | */ | |
123 | UInt_t Process(const AliESDEvent* event, | |
124 | UInt_t& triggers, | |
125 | Bool_t& lowFlux, | |
0bd4b00f | 126 | UShort_t& ivz, |
8565b10b | 127 | Double_t& vz); |
128 | /** | |
129 | * Define the output histograms. These are put in a sub list of the | |
130 | * passed list. The histograms are merged before the parent task calls | |
131 | * AliAnalysisTaskSE::Terminate | |
132 | * | |
133 | * @param dir Directory to add to | |
134 | */ | |
135 | void DefineOutput(TList* dir); | |
136 | /** | |
137 | * Set the number of SPD tracklets for which we consider the event a | |
138 | * low-flux event or not . | |
139 | * | |
140 | * @param c Cut (default 1000) | |
141 | */ | |
142 | void SetLowFluxCut(Int_t c) { fLowFluxCut = c; } | |
143 | /** | |
144 | * Set the maximum error on @f$ v_z@f$ | |
145 | * | |
146 | * @param c Maximum error (in centimeters) | |
147 | */ | |
148 | void SetMaxVzErr(Double_t c=0.1) { fMaxVzErr = c; } | |
149 | /** | |
150 | * Set the debug level. The higher the value the more output | |
151 | * | |
152 | * @param dbg Debug level | |
153 | */ | |
154 | void SetDebug(Int_t dbg=1) { fDebug = dbg; } | |
155 | /** | |
156 | * Fetch our histograms from the passed list | |
157 | * | |
158 | * @param d Input | |
159 | * @param hEventsTr On return, pointer to histogram, or null | |
160 | * @param hEventsTrVtx On return, pointer to histogram, or null | |
161 | * @param hTriggers On return, pointer to histogram, or null | |
162 | * | |
163 | * @return true on success, false otherwise | |
164 | */ | |
165 | Bool_t FetchHistograms(TList* d, | |
166 | TH1I*& hEventsTr, | |
167 | TH1I*& hEventsTrVtx, | |
168 | TH1I*& hTriggers) const; | |
0bd4b00f | 169 | /** |
170 | * Read the collision system, collision energy, and L3 field setting | |
171 | * from the ESD | |
172 | * | |
173 | * @param esd ESD to get information from | |
174 | * | |
175 | * @return true on success, false | |
176 | */ | |
177 | Bool_t ReadRunDetails(const AliESDEvent* esd); | |
178 | /** | |
179 | * Get the collision system (one of the value in ECollisionSystem) | |
180 | * | |
181 | * @return Collision system | |
182 | */ | |
183 | UShort_t GetCollisionSystem() const { return fCollisionSystem; } | |
184 | /** | |
185 | * Get the center of mass energy (per nucleon pair) in GeV | |
186 | * | |
187 | * @return center of mass energy (per nucleon pair) in GeV | |
188 | */ | |
189 | UShort_t GetEnergy() const { return fEnergy; } | |
190 | /** | |
191 | * Get the magnetic field setting of the L3 magnet in kilo Gauss. | |
192 | * | |
193 | * @return The magnetic field setting | |
194 | */ | |
195 | Short_t GetField() const { return fField; } | |
196 | /** | |
197 | * Print information | |
198 | * | |
199 | * @param option Not used | |
200 | */ | |
201 | void Print(Option_t* option="") const; | |
8565b10b | 202 | protected: |
203 | /** | |
204 | * Read the trigger information from the ESD event | |
205 | * | |
206 | * @param esd ESD event | |
207 | * @param triggers On return, contains the trigger bits | |
208 | * | |
209 | * @return @c true on success, @c false otherwise | |
210 | */ | |
211 | Bool_t ReadTriggers(const AliESDEvent* esd, UInt_t& triggers); | |
212 | /** | |
213 | * Read the vertex information from the ESD event | |
214 | * | |
215 | * @param esd ESD event | |
216 | * @param vz On return, the vertex Z position | |
217 | * | |
218 | * @return @c true on success, @c false otherwise | |
219 | */ | |
220 | Bool_t ReadVertex(const AliESDEvent* esd, Double_t& vz); | |
221 | ||
222 | TH1I* fHEventsTr; //! Histogram of events w/trigger | |
223 | TH1I* fHEventsTrVtx; //! Events w/trigger and vertex | |
224 | TH1I* fHTriggers; //! Triggers | |
0bd4b00f | 225 | TH1I* fHType; //! Type (low/high flux) of event |
fe52e455 | 226 | TH1I* fHWords; //! Trigger words |
8565b10b | 227 | Int_t fLowFluxCut; // Low flux cut |
228 | Double_t fMaxVzErr; // Maximum error on v_z | |
229 | TList* fList; //! Histogram container | |
0bd4b00f | 230 | UShort_t fEnergy; // CMS energy (per nucleon pair) [GeV] |
231 | Short_t fField; // L3 magnetic field [kG] | |
232 | UShort_t fCollisionSystem; // | |
8565b10b | 233 | Int_t fDebug; // Debug level |
234 | ClassDef(AliFMDEventInspector,1); // Inspect the event | |
235 | }; | |
236 | ||
237 | #endif | |
238 | // Local Variables: | |
239 | // mode: C++ | |
240 | // End: | |
241 | ||
242 | ||
243 |