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518eb852 | 1 | // $Id$ |
d1e56417 | 2 | |
518eb852 | 3 | /*! |
d1e56417 | 4 | |
518eb852 | 5 | \page README_fast README fast |
6 | ||
7 | ||
8 | \section fast_s1 How to test the fast simulation for MUON. | |
9 | ||
10 | The macro fastMUONGen.C allows to generate events using the | |
d1e56417 | 11 | AliGenMUONCocktailpp generator. In the current implementation, the |
12 | generator is set up in order to force all generated particles to decay | |
13 | within Pythia, including the muonic decay of pions and kaons: | |
14 | gener->SetDecayModePythia(kAllMuonic); | |
15 | By changing the argument from "kAllMuonic" back to "kAll" one can | |
16 | leave it up to GEANT to do these decays. | |
17 | In addition, we require that the "trigger muons" - whose number | |
18 | (single- or dimuon trigger or MB trigger), | |
19 | specified as the third argument of fastMUONGen.C - must have their origin | |
20 | before the hadron absorber in order to "simulate" GEANT: | |
21 | gener->SetMuonOriginCut(-130.); | |
22 | ||
23 | The output of this generation ("galice.root" and "Kinematic.root") | |
518eb852 | 24 | can then be processed by the macro fastMUONSim.C that produces a |
d1e56417 | 25 | root file, called "fastSim_pp.root". It uses the "fast generator" to |
26 | simulate the detector response. The output file contains | |
27 | TClonesArrays holding AliMUONTrackLight and AliMUONPairLight objects | |
28 | that are built on the basis of the surviving muons. | |
29 | ||
30 | Both macros can be run from fastSim.sh test script. | |
31 | ||
518eb852 | 32 | */ |
33 | ||
d1e56417 | 34 |