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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 | /* $Id$ */ | |
17 | ||
18 | //_________________________________________________________________________ | |
19 | // Implementation version v1 of the PHOS particle identifier | |
20 | // Identification is based on information from PPSD and EMC | |
21 | // | |
22 | //*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) | |
23 | ||
24 | ||
25 | // --- ROOT system --- | |
26 | ||
27 | // --- Standard library --- | |
28 | ||
29 | #include <iostream.h> | |
30 | ||
31 | // --- AliRoot header files --- | |
32 | ||
33 | #include "AliPHOSPIDv1.h" | |
34 | #include "AliPHOSTrackSegment.h" | |
35 | #include "AliPHOSRecParticle.h" | |
36 | #include "AliPHOSIndexToObject.h" | |
37 | ||
38 | ClassImp( AliPHOSPIDv1) | |
39 | ||
40 | //____________________________________________________________________________ | |
41 | void AliPHOSPIDv1::MakeParticles(TrackSegmentsList * trsl, RecParticlesList * rpl) | |
42 | { | |
43 | // Makes a RecParticle out of a TrackSegment | |
44 | ||
45 | TIter next(trsl) ; | |
46 | AliPHOSTrackSegment * tracksegment ; | |
47 | Int_t index = 0 ; | |
48 | AliPHOSRecParticle * rp ; | |
49 | Int_t type ; | |
50 | Int_t shower_profile; // 0 narrow and 1 wide | |
51 | Int_t cpv_detector; // 1 hit and 0 no hit | |
52 | Int_t pc_detector; // 1 hit and 0 no hit | |
53 | ||
54 | while ( (tracksegment = (AliPHOSTrackSegment *)next()) ) { | |
55 | new( (*rpl)[index] ) AliPHOSRecParticle(tracksegment) ; | |
56 | rp = (AliPHOSRecParticle *)rpl->At(index) ; | |
57 | AliPHOSEmcRecPoint * recp = tracksegment->GetEmcRecPoint() ; | |
58 | Float_t * lambda = new Float_t[2]; | |
59 | recp->GetElipsAxis(lambda) ; | |
60 | ||
61 | // Looking at the lateral development of the shower | |
62 | if ( ( lambda[0] > fLambda1m && lambda[0] < fLambda1M ) && // shower profile cut | |
63 | ( lambda[1] > fLambda2m && lambda[1] < fLambda2M ) ) shower_profile = 0 ; // NARROW PROFILE | |
64 | else shower_profile = 1 ;// WIDE PROFILE | |
65 | ||
66 | // Looking at the photon conversion detector | |
67 | if( tracksegment->GetPpsdLowRecPoint() == 0 ) pc_detector = 0; // No hit | |
68 | else pc_detector = 1; // hit | |
69 | ||
70 | // Looking at the photon conversion detector | |
71 | if( tracksegment->GetPpsdUpRecPoint() == 0 ) cpv_detector = 0; // No hit | |
72 | else cpv_detector = 1; // Hit | |
73 | ||
74 | type = shower_profile + 2*pc_detector + 4*cpv_detector; | |
75 | rp->SetType(type) ; | |
76 | index++ ; | |
77 | } | |
78 | ||
79 | } | |
80 | ||
81 | //____________________________________________________________________________ | |
82 | void AliPHOSPIDv1:: Print() | |
83 | { | |
84 | // Print the parameters used for the particle type identification | |
85 | ||
86 | cout << "AliPHOSPIDv1 : cuts for the particle idendification based on the shower profile " << endl | |
87 | << fLambda1m << " < value1 < " << fLambda1M << endl | |
88 | << fLambda2m << " < value2 < " << fLambda2M << endl ; | |
89 | ||
90 | } | |
91 | ||
92 | //____________________________________________________________________________ | |
93 | void AliPHOSPIDv1::SetShowerProfileCuts(Float_t l1m, Float_t l1M, Float_t l2m, Float_t l2M) | |
94 | { | |
95 | // Modifies the parameters used for the particle type identification | |
96 | ||
97 | fLambda1m = l1m ; | |
98 | fLambda1M = l1M ; | |
99 | fLambda2m = l2m ; | |
100 | fLambda2M = l2M ; | |
101 | } |