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7984e5f7 | 1 | // |
2 | // This class inspects the event | |
3 | // | |
4 | #ifndef ALIFMDEVENTINSPECTOR_H | |
5 | #define ALIFMDEVENTINSPECTOR_H | |
ffca499d | 6 | /** |
7 | * @file AliFMDEventInspector.h | |
8 | * @author Christian Holm Christensen <cholm@dalsgaard.hehi.nbi.dk> | |
9 | * @date Wed Mar 23 14:02:48 2011 | |
10 | * | |
11 | * @brief | |
12 | * | |
13 | * | |
bd6f5206 | 14 | * @ingroup pwglf_forward_aod |
ffca499d | 15 | */ |
8565b10b | 16 | #include <TNamed.h> |
5bb5d1f6 | 17 | #include <TAxis.h> |
65abd48b | 18 | #include "AliDisplacedVertexSelection.h" |
8565b10b | 19 | class AliESDEvent; |
20 | class TH2D; | |
21 | class TH1D; | |
22 | class TH1I; | |
5e4d905e | 23 | class TH1F; |
e308a636 | 24 | class TH2F; |
8565b10b | 25 | class TAxis; |
26 | class TList; | |
27 | ||
28 | /** | |
29 | * This class inspects the event | |
30 | * | |
31 | * @par Input: | |
32 | * - AliESDFMD object possibly corrected for sharing | |
33 | * | |
34 | * @par Output: | |
35 | * - A histogram of v_z of events with triggers. | |
36 | * - A histogram of v_z of events with vertex and triggers | |
37 | * - A histogram of trigger counters | |
38 | * | |
39 | * Note, that these are added to the master output list | |
40 | * | |
41 | * @par Corrections used: | |
42 | * - None | |
43 | * | |
bd6f5206 | 44 | * @ingroup pwglf_forward_algo |
45 | * @ingroup pwglf_forward_aod | |
8565b10b | 46 | */ |
47 | class AliFMDEventInspector : public TNamed | |
48 | { | |
49 | public: | |
50 | /** | |
51 | * Return codes | |
52 | */ | |
53 | enum ECodes { | |
54 | /** all ok */ | |
55 | kOk = 0, | |
56 | /** No ESD event */ | |
57 | kNoEvent = 0x1, | |
58 | /** No triggers found */ | |
59 | kNoTriggers = 0x2, | |
60 | /** No SPD data */ | |
61 | kNoSPD = 0x4, | |
62 | /** No FMD data */ | |
63 | kNoFMD = 0x8, | |
64 | /** No vertex found */ | |
65 | kNoVertex = 0x10, | |
66 | /** Vertex out of range */ | |
0be6c8cd | 67 | kBadVertex = 0x20 |
8565b10b | 68 | }; |
69 | /** | |
70 | * Trigger bins | |
71 | */ | |
72 | enum ETrgBins { | |
73 | kInel, | |
74 | kInelGt0, | |
e6463868 | 75 | kNSD, |
76 | kV0AND, | |
8565b10b | 77 | kEmpty, |
78 | kA, | |
79 | kB, | |
80 | kC, | |
0be6c8cd | 81 | kE, |
82 | kPileUp, | |
83 | kMCNSD, | |
84 | kOffline | |
8565b10b | 85 | }; |
0bd4b00f | 86 | /** |
87 | * Collision systems | |
88 | */ | |
89 | enum ECollisionSystem { | |
90 | kUnknown, | |
91 | kPP, | |
92 | kPbPb | |
93 | }; | |
8565b10b | 94 | /** |
95 | * Constructor | |
96 | */ | |
97 | AliFMDEventInspector(); | |
98 | /** | |
99 | * Constructor | |
100 | * | |
101 | * @param name Name of object | |
102 | */ | |
103 | AliFMDEventInspector(const char* name); | |
104 | /** | |
105 | * Copy constructor | |
106 | * | |
107 | * @param o Object to copy from | |
108 | */ | |
109 | AliFMDEventInspector(const AliFMDEventInspector& o); | |
110 | /** | |
111 | * Destructor | |
112 | */ | |
113 | virtual ~AliFMDEventInspector(); | |
114 | /** | |
115 | * Assignement operator | |
116 | * | |
117 | * @param o Object to assign from | |
118 | * | |
119 | * @return Reference to this object | |
120 | */ | |
121 | AliFMDEventInspector& operator=(const AliFMDEventInspector&); | |
122 | ||
123 | /** | |
124 | * Initialize the object | |
125 | * | |
126 | * @param vtxAxis Vertex axis in use | |
127 | */ | |
e1f47419 | 128 | virtual void Init(const TAxis& vtxAxis); |
8565b10b | 129 | /** |
130 | * Process the event | |
131 | * | |
132 | * @param event Input event | |
133 | * @param triggers On return, the triggers fired | |
134 | * @param lowFlux On return, true if the event is considered a low-flux | |
135 | * event (according to the setting of fLowFluxCut) | |
0bd4b00f | 136 | * @param ivz On return, the found vertex bin (1-based). A zero |
137 | * means outside of the defined vertex range | |
c389303e | 138 | * @param vz On return, the z position of the interaction |
5e4d905e | 139 | * @param cent On return, the centrality (in percent) or < 0 |
140 | * if not found | |
5bb5d1f6 | 141 | * @param nClusters On return, number of SPD clusters in @f$ |\eta|<1@f$ |
8565b10b | 142 | * |
143 | * @return 0 (or kOk) on success, otherwise a bit mask of error codes | |
144 | */ | |
145 | UInt_t Process(const AliESDEvent* event, | |
146 | UInt_t& triggers, | |
147 | Bool_t& lowFlux, | |
0bd4b00f | 148 | UShort_t& ivz, |
5e4d905e | 149 | Double_t& vz, |
5bb5d1f6 | 150 | Double_t& cent, |
151 | UShort_t& nClusters); | |
8565b10b | 152 | /** |
153 | * Define the output histograms. These are put in a sub list of the | |
154 | * passed list. The histograms are merged before the parent task calls | |
155 | * AliAnalysisTaskSE::Terminate | |
156 | * | |
157 | * @param dir Directory to add to | |
158 | */ | |
159 | void DefineOutput(TList* dir); | |
160 | /** | |
161 | * Set the number of SPD tracklets for which we consider the event a | |
162 | * low-flux event or not . | |
163 | * | |
164 | * @param c Cut (default 1000) | |
165 | */ | |
166 | void SetLowFluxCut(Int_t c) { fLowFluxCut = c; } | |
167 | /** | |
168 | * Set the maximum error on @f$ v_z@f$ | |
169 | * | |
170 | * @param c Maximum error (in centimeters) | |
171 | */ | |
172 | void SetMaxVzErr(Double_t c=0.1) { fMaxVzErr = c; } | |
e83d0620 | 173 | /** |
174 | * Use the first physics vtx code. | |
175 | * | |
176 | * @param use Use it or not | |
177 | */ | |
178 | void SetUseFirstPhysicsVtx(Bool_t use) {fUseFirstPhysicsVertex = use; } | |
31554871 | 179 | /** |
180 | * Use the first physics vtx code. | |
181 | * | |
182 | * @param use Use it or not | |
183 | */ | |
e6463868 | 184 | void SetUseV0AndForNSD(Bool_t use=true) {fUseV0AND = use; } |
185 | /** | |
186 | * Set the minimum number of contributors for a 2nd pile-up vertex | |
187 | * | |
188 | * @param nContrib Least number of contributors | |
189 | */ | |
190 | void SetMinPileupContributors(UShort_t nContrib=3) | |
191 | { | |
192 | fMinPileupContrib = nContrib; | |
193 | } | |
194 | /** | |
195 | * Set minimum distance from primary vertex to 2nd pile-up vertex | |
196 | * | |
197 | * @param cm Distance (in centimeters) | |
198 | */ | |
199 | void SetMinPileupDistance(Double_t cm=0.8) | |
200 | { | |
201 | fMinPileupDistance = cm; | |
202 | } | |
65abd48b | 203 | /** |
204 | * Enable selection of displaced vertices. | |
205 | * | |
206 | * @param use whether to use | |
207 | */ | |
208 | void SetUseDisplacedVertices(Bool_t use=true) | |
209 | { | |
210 | fUseDisplacedVertices = use; | |
211 | } | |
212 | ||
8565b10b | 213 | /** |
214 | * Set the debug level. The higher the value the more output | |
215 | * | |
216 | * @param dbg Debug level | |
217 | */ | |
218 | void SetDebug(Int_t dbg=1) { fDebug = dbg; } | |
219 | /** | |
220 | * Fetch our histograms from the passed list | |
221 | * | |
222 | * @param d Input | |
223 | * @param hEventsTr On return, pointer to histogram, or null | |
224 | * @param hEventsTrVtx On return, pointer to histogram, or null | |
225 | * @param hTriggers On return, pointer to histogram, or null | |
226 | * | |
227 | * @return true on success, false otherwise | |
228 | */ | |
fb3430ac | 229 | Bool_t FetchHistograms(const TList* d, |
8565b10b | 230 | TH1I*& hEventsTr, |
231 | TH1I*& hEventsTrVtx, | |
232 | TH1I*& hTriggers) const; | |
0bd4b00f | 233 | /** |
234 | * Read the collision system, collision energy, and L3 field setting | |
235 | * from the ESD | |
236 | * | |
237 | * @param esd ESD to get information from | |
238 | * | |
239 | * @return true on success, false | |
240 | */ | |
241 | Bool_t ReadRunDetails(const AliESDEvent* esd); | |
242 | /** | |
243 | * Get the collision system (one of the value in ECollisionSystem) | |
244 | * | |
245 | * @return Collision system | |
246 | */ | |
247 | UShort_t GetCollisionSystem() const { return fCollisionSystem; } | |
248 | /** | |
249 | * Get the center of mass energy (per nucleon pair) in GeV | |
250 | * | |
251 | * @return center of mass energy (per nucleon pair) in GeV | |
252 | */ | |
253 | UShort_t GetEnergy() const { return fEnergy; } | |
254 | /** | |
255 | * Get the magnetic field setting of the L3 magnet in kilo Gauss. | |
256 | * | |
257 | * @return The magnetic field setting | |
258 | */ | |
259 | Short_t GetField() const { return fField; } | |
260 | /** | |
261 | * Print information | |
262 | * | |
263 | * @param option Not used | |
264 | */ | |
265 | void Print(Option_t* option="") const; | |
f7cfc454 | 266 | /** |
267 | * Store information about running conditions in output list | |
268 | * | |
269 | * 3 TNamed objects are defined. The names are fixed, but the | |
270 | * title is a string representation of the information, and the | |
271 | * unique ID contains the identifier | |
272 | * | |
273 | * - sys Contains the collision system string and identifier. | |
274 | * - sNN Contains the center-of-mass energy per nucleon (GeV) | |
275 | * - field Contains the L3 magnetic field (kG) | |
9b2f2e39 | 276 | * - run Contains the run number |
f7cfc454 | 277 | * |
9b2f2e39 | 278 | * @param runNo Run number - read off from ESD event |
f7cfc454 | 279 | */ |
9b2f2e39 | 280 | virtual void StoreInformation(Int_t runNo); |
8565b10b | 281 | protected: |
282 | /** | |
283 | * Read the trigger information from the ESD event | |
284 | * | |
285 | * @param esd ESD event | |
286 | * @param triggers On return, contains the trigger bits | |
5bb5d1f6 | 287 | * @param nClusters On return, number of SPD clusters in @f$ |\eta|<1@f$ |
8565b10b | 288 | * |
289 | * @return @c true on success, @c false otherwise | |
290 | */ | |
5bb5d1f6 | 291 | Bool_t ReadTriggers(const AliESDEvent* esd, UInt_t& triggers, |
292 | UShort_t& nClusters); | |
8565b10b | 293 | /** |
294 | * Read the vertex information from the ESD event | |
295 | * | |
296 | * @param esd ESD event | |
297 | * @param vz On return, the vertex Z position | |
290052e7 | 298 | * @param vx On return, the vertex X position |
299 | * @param vy On return, the vertex Y position | |
8565b10b | 300 | * |
301 | * @return @c true on success, @c false otherwise | |
302 | */ | |
290052e7 | 303 | Bool_t ReadVertex(const AliESDEvent* esd, |
304 | Double_t& vz, | |
305 | Double_t& vx, | |
306 | Double_t& vy); | |
e1f47419 | 307 | /** |
308 | * Read centrality from event | |
309 | * | |
310 | * @param esd Event | |
311 | * @param cent On return, the centrality or negative if not found | |
ffca499d | 312 | * @param qual On return, centrality quality flag |
e1f47419 | 313 | * |
314 | * @return False on error, true otherwise | |
315 | */ | |
e308a636 | 316 | virtual Bool_t ReadCentrality(const AliESDEvent* esd, Double_t& cent, |
317 | UShort_t& qual) const; | |
8565b10b | 318 | |
319 | TH1I* fHEventsTr; //! Histogram of events w/trigger | |
320 | TH1I* fHEventsTrVtx; //! Events w/trigger and vertex | |
5bb5d1f6 | 321 | TH1I* fHEventsAccepted; //! Events w/trigger and vertex in range |
96110c91 | 322 | TH2D* fHEventsAcceptedXY; //! XY vtx with trigger and Z vertex in range |
8565b10b | 323 | TH1I* fHTriggers; //! Triggers |
0bd4b00f | 324 | TH1I* fHType; //! Type (low/high flux) of event |
fe52e455 | 325 | TH1I* fHWords; //! Trigger words |
5e4d905e | 326 | TH1F* fHCent; //! Centrality |
e308a636 | 327 | TH2F* fHCentVsQual; //! Centrality vs quality |
8565b10b | 328 | Int_t fLowFluxCut; // Low flux cut |
329 | Double_t fMaxVzErr; // Maximum error on v_z | |
330 | TList* fList; //! Histogram container | |
0bd4b00f | 331 | UShort_t fEnergy; // CMS energy (per nucleon pair) [GeV] |
332 | Short_t fField; // L3 magnetic field [kG] | |
fb3430ac | 333 | UShort_t fCollisionSystem; // Collision system |
8565b10b | 334 | Int_t fDebug; // Debug level |
e308a636 | 335 | TAxis* fCentAxis; // Centrality axis used in histograms |
31554871 | 336 | TAxis fVtxAxis; //Vtx Axis |
e83d0620 | 337 | Bool_t fUseFirstPhysicsVertex; //Use the vtx code from p+p first physics |
31554871 | 338 | Bool_t fUseV0AND; //Use the vtx code from p+p first physics |
e6463868 | 339 | UShort_t fMinPileupContrib; // Minimum number of contributors to 2nd |
340 | // pile-up vertex | |
341 | Double_t fMinPileupDistance; // Minimum distance of 2nd pile-up | |
342 | // vertex | |
65abd48b | 343 | Bool_t fUseDisplacedVertices; //Analyze displaced vertices? |
344 | AliDisplacedVertexSelection fDisplacedVertex; //Displaced vertex selector | |
e6463868 | 345 | ClassDef(AliFMDEventInspector,4); // Inspect the event |
8565b10b | 346 | }; |
347 | ||
348 | #endif | |
349 | // Local Variables: | |
350 | // mode: C++ | |
351 | // End: | |
352 | ||
353 | ||
354 |