gauss:gauss
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| gauss:gauss [2011/10/29 15:22] – created decianm | gauss:gauss [2012/04/05 11:59] – [How to write out MCParticles in Gauss] che | ||
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| ===== How to write out MCParticles in Gauss ===== | ===== How to write out MCParticles in Gauss ===== | ||
| It can be very useful to let Gauss write out MCParticles in the Generation directly (without the detector simulation), | It can be very useful to let Gauss write out MCParticles in the Generation directly (without the detector simulation), | ||
| - | This can be achieved the following way: | + | This can be achieved the following way (write this at the end of your version of Gauss-Job.py): |
| <code python> | <code python> | ||
| gtos = GenerationToSimulation() | gtos = GenerationToSimulation() | ||
| Line 15: | Line 15: | ||
| The root file can then be run over with an MCTupleTool in DaVinci (with certain restrictions, | The root file can then be run over with an MCTupleTool in DaVinci (with certain restrictions, | ||
| + | To avoid error messages like: | ||
| + | |||
| + | MainEventGaussSim | ||
| + | |||
| + | you have to make sure that you have included | ||
| + | <code python> | ||
| + | Gauss().Phases = [" | ||
| + | Gauss().Output = ' | ||
| + | Gauss().Histograms = ' | ||
| + | </ | ||
| + | in your Gauss-Job.py file. | ||
| + | |||
| + | ===== Running EvtGen standalone ===== | ||
| + | You can run EvtGen standalone, letting the particles decay at rest. This is very fast, as no underlying event has to be generated. | ||
| + | A prototype file could look like (Gauss v41r1): | ||
| + | <code python> | ||
| + | #Event Type: 11114001 | ||
| + | from Configurables import Generation | ||
| + | Generation().EventType = 11114001 | ||
| + | from Configurables import StandAloneDecayTool | ||
| + | Generation().SampleGenerationTool = " | ||
| + | Generation().addTool( StandAloneDecayTool ) | ||
| + | Generation().StandAloneDecayTool.ProductionTool = " | ||
| + | |||
| + | from Configurables import ToolSvc | ||
| + | from Configurables import EvtGenDecay | ||
| + | |||
| + | ToolSvc().addTool( EvtGenDecay ) | ||
| + | ToolSvc().EvtGenDecay.UserDecayFile =" | ||
| + | Generation().StandAloneDecayTool.SignalPIDList = [ 511,-511 ] | ||
| + | </ | ||
| + | |||
| + | These both things (running EvtGen standalone and writing out MCParticles) can of course be combined. | ||
gauss/gauss.txt · Last modified: 2012/04/10 16:16 by che
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