1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 // Simple particle gun.
19 // Momentum, phi and theta of the partice as well as the particle type can be set.
20 // If fExplicit is true the user set momentum vector is used,
21 // otherwise it is calculated.
22 // andreas.morsch@cern.ch
26 #include "AliGenFixed.h"
31 //_____________________________________________________________________________
32 AliGenFixed::AliGenFixed()
36 // Default constructor
42 //_____________________________________________________________________________
43 AliGenFixed::AliGenFixed(Int_t npart)
47 // Standard constructor
50 fTitle="Fixed Particle Generator";
51 // Generate Proton by default
56 //_____________________________________________________________________________
57 void AliGenFixed::Generate()
60 // Generate one trigger
62 Float_t polar[3]= {0,0,0};
64 fP[0] = fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin);
65 fP[1] = fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin);
66 fP[2] = fPMin*TMath::Cos(fThetaMin);
71 PushTrack(fTrackIt,-1,fIpart,fP,fOrigin.GetArray(),polar,0,kPPrimary,nt);
74 //_____________________________________________________________________________
75 void AliGenFixed::SetSigma(Float_t /*sx*/, Float_t /*sy*/, Float_t /*sz*/)
78 // Set the interaction point sigma
80 printf("Vertex smearing not implemented for fixed generator\n");