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790bbabf | 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 | /* | |
17 | $Log$ | |
a99cf51f | 18 | Revision 1.5 2001/02/24 11:41:59 morsch |
19 | SetGun allows specify completely the particle kinematics and position in one go. (FCA) | |
20 | ||
f1f30542 | 21 | Revision 1.4 2000/12/21 16:24:06 morsch |
22 | Coding convention clean-up | |
23 | ||
675e9664 | 24 | Revision 1.3 2000/11/30 07:12:50 alibrary |
25 | Introducing new Rndm and QA classes | |
26 | ||
65fb704d | 27 | Revision 1.2 2000/10/02 15:17:54 morsch |
28 | Unused includes removed. | |
29 | ||
6c2f0383 | 30 | Revision 1.1 2000/06/09 20:24:00 morsch |
31 | Same class as previously in AliSimpleGen.cxx | |
32 | All coding rule violations except RS3 corrected (AM) | |
33 | ||
790bbabf | 34 | */ |
35 | ||
675e9664 | 36 | |
37 | ||
38 | // Simple particle gun. | |
39 | // Momentum, phi and theta of the partice as well as the particle type can be set. | |
40 | // andreas.morsch@cern.ch | |
790bbabf | 41 | //Begin_Html |
42 | /* | |
43 | <img src="picts/AliGeneratorClass.gif"> | |
44 | </pre> | |
45 | <br clear=left> | |
46 | <font size=+2 color=red> | |
47 | <p>The responsible person for this module is | |
48 | <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>. | |
49 | </font> | |
50 | <pre> | |
51 | */ | |
52 | //End_Html | |
53 | // // | |
54 | /////////////////////////////////////////////////////////////////// | |
55 | ||
56 | #include "AliGenFixed.h" | |
57 | #include "AliRun.h" | |
790bbabf | 58 | #include "AliPDG.h" |
790bbabf | 59 | |
60 | ClassImp(AliGenFixed) | |
61 | ||
62 | //_____________________________________________________________________________ | |
63 | AliGenFixed::AliGenFixed() | |
64 | :AliGenerator() | |
65 | { | |
66 | // | |
67 | // Default constructor | |
68 | // | |
69 | fIpart = 0; | |
f1f30542 | 70 | fExplicit = kFALSE; |
790bbabf | 71 | } |
72 | ||
73 | //_____________________________________________________________________________ | |
74 | AliGenFixed::AliGenFixed(Int_t npart) | |
75 | :AliGenerator(npart) | |
76 | { | |
77 | // | |
78 | // Standard constructor | |
79 | // | |
80 | fName="Fixed"; | |
81 | fTitle="Fixed Particle Generator"; | |
82 | // Generate Proton by default | |
83 | fIpart=kProton; | |
84 | } | |
85 | ||
86 | //_____________________________________________________________________________ | |
87 | void AliGenFixed::Generate() | |
88 | { | |
89 | // | |
90 | // Generate one trigger | |
91 | // | |
92 | Float_t polar[3]= {0,0,0}; | |
f1f30542 | 93 | if(!fExplicit) { |
94 | fP[0] = fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin); | |
95 | fP[1] = fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin); | |
96 | fP[2] = fPMin*TMath::Cos(fThetaMin); | |
97 | } | |
790bbabf | 98 | Int_t i, nt; |
99 | // | |
f1f30542 | 100 | for(i=0;i<fNpart;i++) |
a99cf51f | 101 | SetTrack(fTrackIt,-1,fIpart,fP,fOrigin.GetArray(),polar,0,kPPrimary,nt); |
f1f30542 | 102 | |
790bbabf | 103 | } |
104 | ||
105 | //_____________________________________________________________________________ | |
106 | void AliGenFixed::SetSigma(Float_t sx, Float_t sy, Float_t sz) | |
107 | { | |
108 | // | |
109 | // Set the interaction point sigma | |
110 | // | |
111 | printf("Vertex smearing not implemented for fixed generator\n"); | |
112 | } |