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Added first working version of HERWIG7 external generator
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MC/config/examples/herwig/LHC.in

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# -*- ThePEG-repository -*-
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################################################################################
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# This file contains our best tune to UE data from ATLAS at 7 TeV. More recent
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# tunes and tunes for other centre-of-mass energies as well as more usage
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# instructions can be obtained from this Herwig wiki page:
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# http://projects.hepforge.org/herwig/trac/wiki/MB_UE_tunes
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# The model for soft interactions and diffractions is explained in
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# [S. Gieseke, P. Kirchgaesser, F. Loshaj, arXiv:1612.04701]
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################################################################################
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read snippets/PPCollider.in
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##################################################
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# Technical parameters for this run
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##################################################
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cd /Herwig/Generators
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##################################################
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# LHC physics parameters (override defaults here)
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##################################################
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set EventGenerator:EventHandler:LuminosityFunction:Energy 13000.0
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# Minimum Bias
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read snippets/MB.in
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# Recommended set of parameters for MB/UE runs
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set /Herwig/Hadronization/ColourReconnector:ReconnectionProbability 0.5
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set /Herwig/UnderlyingEvent/MPIHandler:pTmin0 3.502683
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set /Herwig/UnderlyingEvent/MPIHandler:InvRadius 1.402055
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set /Herwig/UnderlyingEvent/MPIHandler:Power 0.416852
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set /Herwig/Partons/RemnantDecayer:ladderPower -0.08
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set /Herwig/Partons/RemnantDecayer:ladderNorm 0.95
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# Diffraction model
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# read snippets/Diffraction.in
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# Read in snippet in order to use baryonic reconnection model with modified gluon splitting (uds)
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# For more details see [S. Gieseke, P. Kirchgaeßer, S. Plätzer. arXiv:1710.10906]]
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##############################################################################################
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# read BaryonicReconnection.in
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##################################################
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# Analyses
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##################################################
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# cd /Herwig/Analysis
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# create ThePEG::RivetAnalysis RivetAnalysis RivetAnalysis.so
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# cd /Herwig/Generators
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# insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/RivetAnalysis
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# insert /Herwig/Analysis/RivetAnalysis:Analyses 0 ATLAS_20XX_XXXXXXX
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#set /Herwig/Analysis/Plot:EventNumber 54
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#cd /Herwig/Generators
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#insert EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/Plot
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# read /Herwig/snippets/HepMC.in
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#create ThePEG::HepMCFile /Herwig/Analysis/HepMC HepMCAnalysis.so
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#set /Herwig/Analysis/HepMC:PrintEvent $NEV
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#set /Herwig/Analysis/HepMC:Format GenEvent
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#set /Herwig/Analysis/HepMC:Units GeV_mm
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#set /Herwig/Analysis/HepMC:Filename ${FIFOPATH}
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#insert /Herwig/Generators/EventGenerator:AnalysisHandlers 0 /Herwig/Analysis/HepMC
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##################################################
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# Save run for later usage with 'Herwig run'
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##################################################
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# cd /Herwig/Generators
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saverun LHC EventGenerator

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