This is a request for a new Monte Carlo production. The production configuration repeats the previous one but for a different collision system: Bi (83/209) +Bi (83/209) collisions at 9 GeV. Such a configuration of colliding nuclei is now considered as most probable for the first year of operation.
Please find below the request details, the UrQMD configuration file was updated accordingly.
inputfile (304 Bytes)
UserDecay.C (9.2 KB)
runMC.C (9.3 KB)
reco.C (7.8 KB)
This is a Geant4 based general-purpose project, which includes simulation of the MPD-ECAL (v.3 geometry) and has enhanced (x20) probabilities for light vector meson decays to ee+X channels. Since original branching for such decays is 10^-4-10^-5, the enhancement does not affect the simulation of hadrons.
The simulation project consists of a few stages:
- Events are generated by UrQMD. It should be run with an attached inputfile, which was setup to generate 500 minbias BiBi@9 collisions. Some of the particles are requested to be stable in the input file to be further decayed by Geant.
Important : The value of ‘rsd’ parameter should be set as a unique integer for each UrQMD run. - Make a fresh check-out of the dev version of the mpdroot, then compile it. Replace mpdroot/gconfig/UserDecay.C file with the attached file. The file redefines decay channels for eta/rho/omega/phi/eta’. Unlike the first production, the ‘mdroot’ version should be tagged for this one. It is needed in order to be able to return to the same ‘mpdroot’ version later.
- For simulation, please use attached runMC.C macro.
- For reconstruction please use the attached reco.C macro. It produced standard DST files.
Notes:
- In this production, we do not need to store the intermediate files from steps (1) and (3) produced by UrQMD and runMC.C macro. They can be removed after or during production.
- In this production, we do need to produce uDST files, the reco.C file was modified accordingly.
- To validate the production configuration, we need ~ 100,000 events reconstructed for QA.
- The output files will have to be copied and stored at NICA cluster.