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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 | $Log$ | |
88cb7938 | 18 | Revision 1.7.4.1 2003/04/14 17:33:49 hristov |
19 | Merging with v3-09-08 (part1) | |
20 | ||
21 | Revision 1.8 2003/01/14 10:50:18 alibrary | |
22 | Cleanup of STEER coding conventions | |
23 | ||
116cbefd | 24 | Revision 1.7 2001/10/30 11:27:35 morsch |
25 | fExplicit member data correctly initialized. | |
26 | ||
49c4fdc3 | 27 | Revision 1.6 2001/07/27 17:09:36 morsch |
28 | Use local SetTrack, KeepTrack and SetHighWaterMark methods | |
29 | to delegate either to local stack or to stack owned by AliRun. | |
30 | (Piotr Skowronski, A.M.) | |
31 | ||
a99cf51f | 32 | Revision 1.5 2001/02/24 11:41:59 morsch |
33 | SetGun allows specify completely the particle kinematics and position in one go. (FCA) | |
34 | ||
f1f30542 | 35 | Revision 1.4 2000/12/21 16:24:06 morsch |
36 | Coding convention clean-up | |
37 | ||
675e9664 | 38 | Revision 1.3 2000/11/30 07:12:50 alibrary |
39 | Introducing new Rndm and QA classes | |
40 | ||
65fb704d | 41 | Revision 1.2 2000/10/02 15:17:54 morsch |
42 | Unused includes removed. | |
43 | ||
6c2f0383 | 44 | Revision 1.1 2000/06/09 20:24:00 morsch |
45 | Same class as previously in AliSimpleGen.cxx | |
46 | All coding rule violations except RS3 corrected (AM) | |
47 | ||
790bbabf | 48 | */ |
49 | ||
675e9664 | 50 | |
51 | ||
52 | // Simple particle gun. | |
53 | // Momentum, phi and theta of the partice as well as the particle type can be set. | |
54 | // andreas.morsch@cern.ch | |
790bbabf | 55 | //Begin_Html |
56 | /* | |
57 | <img src="picts/AliGeneratorClass.gif"> | |
58 | </pre> | |
59 | <br clear=left> | |
60 | <font size=+2 color=red> | |
61 | <p>The responsible person for this module is | |
62 | <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>. | |
63 | </font> | |
64 | <pre> | |
65 | */ | |
66 | //End_Html | |
67 | // // | |
68 | /////////////////////////////////////////////////////////////////// | |
69 | ||
116cbefd | 70 | #include "TPDGCode.h" |
71 | ||
790bbabf | 72 | #include "AliGenFixed.h" |
73 | #include "AliRun.h" | |
790bbabf | 74 | |
75 | ClassImp(AliGenFixed) | |
76 | ||
77 | //_____________________________________________________________________________ | |
78 | AliGenFixed::AliGenFixed() | |
79 | :AliGenerator() | |
80 | { | |
81 | // | |
82 | // Default constructor | |
83 | // | |
84 | fIpart = 0; | |
f1f30542 | 85 | fExplicit = kFALSE; |
790bbabf | 86 | } |
87 | ||
88 | //_____________________________________________________________________________ | |
89 | AliGenFixed::AliGenFixed(Int_t npart) | |
90 | :AliGenerator(npart) | |
91 | { | |
92 | // | |
93 | // Standard constructor | |
94 | // | |
95 | fName="Fixed"; | |
96 | fTitle="Fixed Particle Generator"; | |
97 | // Generate Proton by default | |
98 | fIpart=kProton; | |
49c4fdc3 | 99 | fExplicit = kFALSE; |
790bbabf | 100 | } |
101 | ||
102 | //_____________________________________________________________________________ | |
103 | void AliGenFixed::Generate() | |
104 | { | |
105 | // | |
106 | // Generate one trigger | |
107 | // | |
108 | Float_t polar[3]= {0,0,0}; | |
f1f30542 | 109 | if(!fExplicit) { |
110 | fP[0] = fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin); | |
111 | fP[1] = fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin); | |
112 | fP[2] = fPMin*TMath::Cos(fThetaMin); | |
113 | } | |
790bbabf | 114 | Int_t i, nt; |
115 | // | |
f1f30542 | 116 | for(i=0;i<fNpart;i++) |
a99cf51f | 117 | SetTrack(fTrackIt,-1,fIpart,fP,fOrigin.GetArray(),polar,0,kPPrimary,nt); |
790bbabf | 118 | } |
119 | ||
120 | //_____________________________________________________________________________ | |
121 | void AliGenFixed::SetSigma(Float_t sx, Float_t sy, Float_t sz) | |
122 | { | |
123 | // | |
124 | // Set the interaction point sigma | |
125 | // | |
126 | printf("Vertex smearing not implemented for fixed generator\n"); | |
127 | } |