TRACKING must be 1 for RKUTA and 2 for HELIX (the default value for aliroot is 2 (HELIX))
FACTOR allows you to set the magnetic field to 0, just putting FACTOR=0. Default value is 1.
MAXB is the maximum magnetic field which is 10.T
+===========================================================
+ MUON cocktail for physics ..............
+===========================================================
+There is a MUON cocktail generator of the muon sources in the
+EVGEN directory. This class derives from AliGenCocktail.
+In the init of this class I have filled the cocktail with
+the muon sources: J/Psi, Upsilon, Open Charm, Open Beauty,
+Pion, Kaons. The code needs only the production cross section
+at 4pi (for the moment this values are in the code since I
+prefere them do not be modified), and the code calculates the
+rate of particles in the acceptance, making the scaling based
+on the number of collisions for the hard probes and on the
+number of participants for soft sources: Pions and Kaons.
+
+In the Genereate of this class all entries in the cocktail
+are called and we define a "primordial trigger" with requires
+a minimum number of muons above a Pt cut in the required acceptance.
+In order to normalized to the real number of simulated events,
+there are 2 data members in the class fNsuceeded adn fNGenerate
+which tell us what is the biais source.
+
+Enclose an example to use this generator:
+AliGenMUONCocktail * gener = new AliGenMUONCocktail();
+gener->SetPtRange(1.,100.); // Transverse momentum range
+gener->SetPhiRange(0.,360.); // Azimuthal angle range
+gener->SetYRange(-4.0,-2.4);
+gener->SetMuonPtCut(1.);
+gener->SetMuonThetaCut(171.,178.);
+gener->SetMuonMultiplicity(2);
+gener->SetNumberOfCollisions(1950.);
+gener->SetNumberOfParticipants(400.);
+gener->SetVertexSmear(kPerTrack);
+gener->SetOrigin(0,0,0); // Vertex position
+gener->SetSigma(0,0,0.0); // Sigma in (X,Y,Z) (cm) on IP position
+gener->Init();
+
===========================================================
Still working ..............