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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 | // PID Response class for the TRD detector | |
17 | // Based on 1D Likelihood approach | |
18 | // For further information see implementation file | |
19 | // | |
20 | #ifndef ALITRDPIDRESPONSE_H | |
21 | #define ALITRDPIDRESPONSE_H | |
22 | ||
23 | #ifndef ROOT_TObject | |
24 | #include <TObject.h> | |
25 | #endif | |
26 | ||
27 | #ifndef ALIPID_H | |
28 | #include "AliPID.h" | |
29 | #endif | |
30 | ||
31 | class TObjArray; | |
32 | class AliVTrack; | |
33 | class AliTRDPIDResponse : public TObject { | |
34 | public: | |
35 | enum ETRDPIDResponseStatus { | |
36 | kIsOwner = BIT(14) | |
37 | }; | |
38 | enum ETRDPIDResponseDef { | |
39 | kNlayer = 6 | |
40 | ,kNPBins = 6 | |
41 | }; | |
42 | AliTRDPIDResponse(const Char_t *filename = NULL); | |
43 | AliTRDPIDResponse(const AliTRDPIDResponse &ref); | |
44 | AliTRDPIDResponse& operator=(const AliTRDPIDResponse &); | |
45 | ~AliTRDPIDResponse(); | |
46 | ||
47 | Int_t GetPIDmethod() const { return fPIDmethod;} | |
48 | Bool_t GetResponse(Int_t n, Double_t *dedx, Float_t *p, Double_t prob[AliPID::kSPECIES], Bool_t kNorm=kTRUE) const; | |
49 | ||
50 | Bool_t IsOwner() const {return TestBit(kIsOwner);} | |
51 | ||
52 | void SetOwner(); | |
53 | void SetPIDmethod(Int_t m) {fPIDmethod=m;} | |
54 | void SetGainNormalisationFactor(Double_t gainFactor) { fGainNormalisationFactor = gainFactor; } | |
55 | ||
56 | private: | |
57 | Bool_t CookdEdx(Double_t *in, Double_t *out) const; | |
58 | Int_t GetLowerMomentumBin(Double_t p) const; | |
59 | Double_t GetProbabilitySingleLayer(Int_t species, Double_t plocal, Double_t dEdx) const; | |
60 | Bool_t Load(const Char_t *filename = NULL); | |
61 | ||
62 | static const Double_t fgkPBins[kNPBins]; | |
63 | TObjArray *fReferences; // Container for reference distributions | |
64 | Int_t fMapRefHists[AliPID::kSPECIES][kNPBins]; | |
65 | // Map for the position of a given historgam in the container | |
66 | Double_t fGainNormalisationFactor; // Gain normalisation factor | |
67 | UChar_t fPIDmethod; // PID method selector | |
68 | ||
69 | ClassDef(AliTRDPIDResponse, 2) // Tool for TRD PID | |
70 | }; | |
71 | #endif | |
72 |