| | 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 | // 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 |
| | 23 | |
| | 24 | #include "TPDGCode.h" |
| | 25 | |
| | 26 | #include "AliGenFixed.h" |
| | 27 | #include "AliRun.h" |
| | 28 | |
| | 29 | ClassImp(AliGenFixed) |
| | 30 | |
| | 31 | //_____________________________________________________________________________ |
| | 32 | AliGenFixed::AliGenFixed() |
| | 33 | :AliGenerator() |
| | 34 | { |
| | 35 | // |
| | 36 | // Default constructor |
| | 37 | // |
| | 38 | fIpart = 0; |
| | 39 | fExplicit = kFALSE; |
| | 40 | } |
| | 41 | |
| | 42 | //_____________________________________________________________________________ |
| | 43 | AliGenFixed::AliGenFixed(Int_t npart) |
| | 44 | :AliGenerator(npart) |
| | 45 | { |
| | 46 | // |
| | 47 | // Standard constructor |
| | 48 | // |
| | 49 | fName="Fixed"; |
| | 50 | fTitle="Fixed Particle Generator"; |
| | 51 | // Generate Proton by default |
| | 52 | fIpart=kProton; |
| | 53 | fExplicit = kFALSE; |
| | 54 | } |
| | 55 | |
| | 56 | //_____________________________________________________________________________ |
| | 57 | void AliGenFixed::Generate() |
| | 58 | { |
| | 59 | // |
| | 60 | // Generate one trigger |
| | 61 | // |
| | 62 | Float_t polar[3]= {0,0,0}; |
| | 63 | if(!fExplicit) { |
| | 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); |
| | 67 | } |
| | 68 | Int_t i, nt; |
| | 69 | // |
| | 70 | for(i=0;i<fNpart;i++) |
| | 71 | PushTrack(fTrackIt,-1,fIpart,fP,fOrigin.GetArray(),polar,0,kPPrimary,nt); |
| | 72 | } |
| | 73 | |
| | 74 | //_____________________________________________________________________________ |
| | 75 | void AliGenFixed::SetSigma(Float_t /*sx*/, Float_t /*sy*/, Float_t /*sz*/) |
| | 76 | { |
| | 77 | // |
| | 78 | // Set the interaction point sigma |
| | 79 | // |
| | 80 | printf("Vertex smearing not implemented for fixed generator\n"); |
| | 81 | } |
git://git.uio.no / u / mrichter / AliRoot.git / blame_incremental