Simulation Validation

This pages is intended to held the information needed for validation of the simulation, from MC samples to generator and reconstructed distributions and reference/documentation to tools.

Validation Tests

  Analysis Gauss cmt CMake Who Geant4 cmt CMake Who LHCbPR2
1 Hadronic cross-section - - -   hadr00 Y Y   Analysis Module - work in progress
2 Hadronic interaction probability Sim/SimChecks Target Y N Kristian -       Handler exist, work in progress
3 Hadronic Multiplicity Sim/SimChecks Target Y N Kristian - - -   Handler exist, work in progress
4 ECAL -       TestEm3 Y Y Tim Analysis Module exists
5 Multiple scattering in thin layers -       TestEm5 Y Y Tim Analysis Module exists
6 Multiple Scattering in MUON Muon/MuonMoniSim ? ? Ryan - -      
7 Bremsstrahlung (Sim/SimChecks EmValidation ) Y N Georgios - -      
8 dE/dex in thin layers (Sim/SimChecks EmValidation ) Y N Georgios - -      
9 Rad length monitoriting Sim/SimChecks rad_length_scan Y N Kristian - -      
10 Sajan Cherenkov tests                  
11 Marco A RIVET tests                  
12 Alessio's tests                  
13 Detailed Timing Tests                  

Samples for validation

A set of samples are necessary for validating a new production version, new versions of Geant4 and of generators. The production of these samples should become automated and the results published on a dedicated web page. This samples are produced by the production system, so that the all chain is exercised.

Two different macro-sets are produced depending on what need to be validated:

  • particle-gun, min bias and inclusive samples (sim+digi)
  • physics samples (dst files)

The list of samples to be produced routinely should be populated by the MC physics working groups contacts, the detectors, trigger and reconstruction software contacts.
The list of sample produced for MC09 can be found here.

Distributions for validation

Tools for validation and tuning

MC production histograms: monitoring tools

Instructions to use of the Online Tools (OnlineHistDB, Presenter) for monitoring the MC histograms can be found here. Work in progress, under construction May-Be-Not-Up-To-Date

Rivet and Professor

A dedicated package called GenTune is available from Gauss v42r2 for tuning of generators against published data, using Rivet. Instructions and documentation are available from this page.

-- GloriaCorti - 24-May-2011

This topic: LHCb > WebHome > LHCbComputing > LHCbSimulation > SimulationValidation
Topic revision: r9 - 2016-11-29 - NigelWatson
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