MCtools < ATLAS

r6 - 15 Aug 2008 - 11:22:50 - VojtechJuranekYou are here: TWiki >
---+ Monte Carlo Tools
%TOC%

---++MC generators

---+++ !ThePEG
   * [[http://home.thep.lu.se/ThePEG/][ThePEG web page]] (or [[http://projects.hepforge.org/thepeg/][page]] on [[http://www.hepforge.org/][HepForge]])
   * Toolkit for High Energy Physics Event Generation.
---++++Installation
   * Depends on GSL - [[http://www.gnu.org/software/gsl/][GNU Scientific Library]]
   * Installing GSL straight forward (<code>./configure --prefix=$HOME/local;make;make install</code>)
   * Installing !ThePEG as well (<code>./configure --prefix=$HOME/local --with-gsl=$HOME/local;make;make install</code>)

   * To generate doxygen documentation, run <code>make html</code>.


---+++Herwig++
   * [[http://projects.hepforge.org/herwig/][Herwig++ web page]] (and [[http://arxiv.org/abs/0803.0883][manual]])

---++++Installation
   * Version 2.2.1: <code> ./configure --prefix=$HOME/local --with-gsl=$HOME/local/ --with-thepeg=$HOME/local --with-pdf=$HOME/local --with-clhep=$HOME/local --with-hepmc=$HOME/local; make; make install</code>.
   * It is not necessary to use the con&#64257;gure &#64258;ag <code>--with-root=/path/to/root</code> for Root based analysis.

   * To generate doxygen documentation, run <code>make html</code>.

---++++Running
   * First is needed to create rpo file: <code>Herwig++ init -i /usr/local/share/Herwig++/defaults/HerwigDefaults.in</code>.
   * Then creation of run file is needed: <code>Herwig++ read LHC.in</code>.
   * Then run the file: <code>Herwig++ run LHC.run -N 100</code>.

---++++Input files

---++++Analysis
   * For creation analysis plot has to be compiled with <code>--with-hepmc</code> option,
<pre>
  insert LHCGenerator:AnalysisHandlers 0 /Herwig/Analysis/Plot
  insert LHCGenerator:AnalysisHandlers 0 /Herwig/Analysis/HepMCFile
</pre>

   * User analysis:
<pre>
  cd /Herwig/Analysis
  create MyAnalysis::First first analysis/First.so
  insert /Herwig/Generators/LHCGenerator:AnalysisHandlers 0 first
  cd /Herwig/Generators
</pre>


---+++Pythia 8
   * [[http://home.thep.lu.se/~torbjorn/pythiaaux/present.html][Pythia web page]]
   * installation: download, <code>./configure;make</code>

---+++Sherpa
   * [[http://projects.hepforge.org/sherpa/dokuwiki/doku.php][Sherpa web page]]

---+++Links to other Monte Carlos
   * [[https://twiki.cern.ch/twiki/bin/view/Atlas/BeamHaloGenerator][Beam halo generátor]]

---++ MC Tools

---+++PDFs
---++++LHAPDF
   * [[http://projects.hepforge.org/lhapdf/][LHAPDF web page]]
   * Les Houches Accord PDF Interface - interface to modern PDF sets.
   * install: <code>./configure --prefix=$HOME/local;make;make install</code>

---+++Event records
---++++ !HepMC
   * [[http://lcgapp.cern.ch/project/simu/HepMC/][HepMC web page]]
   * Object oriented event record written in C++ for High Energy Physics Monte Carlo Generators
   * install: <code>./configure --prefix=$HOME/local/ --with-momentum=MEV --with-length=MM;make;make install</code>

---++++ !HepEvt
   * Old event record format used e.g. in fortran Herwig.

---+++ HEP libraries
---++++CLHEP
   * [[http://www.cern.ch/clhep][CLHEP web page]]
   * Pet of HEP-specific foundation and utility classes such as random generators, physics vectors, geometry and linear algebra.
   * install: <code>./configure --prefix=$HOME/local;make;make install</code>



---+++MC validation

---++++Rivet
   * [[http://projects.hepforge.org/rivet/][Rivet web page]]
   * A toolkit for validation of Monte Carlo event generators (descedant of [[http://projects.hepforge.org/hztool/][HZTool]] written in C++)
---+++++Instalation
   * Installation: run bootstrap script
   * If not on machine with mounted <code>/afs/cern.ch</code>, the Genser mirror has to be installed - script for install is probably in Agile trunk (<code>agile-genser-bootstrap</code>).
---+++++A brief tutorial
   * CDF uderlying event analysis, run 10000 in Herwig++ with Herwig++ in params/herwig/HwSetup.in file and store the result in !MinBias.aida file (description in attached file, [[%ATTACHURL%/RivetNotes.pdf][RivetNotes.pdf]] - slides from [[http://www.cteq-mcnet.org/][CTEQ-MCnet school]]):
<pre>
     rivetgun -g Herwig++ -P tevatron1800.params -p INFILE=params/herwig/HwSetup.in -a CDF_2001_S4751469 -n 10000 -H MinBias
</pre>
   * <code>-P</code> - specifies file with parameters
   * <code>-p INFILE</code> - specifies file with generator setting
   * <code>-a</code> specifies, which analysis should be used
   * <code>-n</code> - number of events to be generated
   * <code>-H</code> - name of output file (automaticly suffix <code>.aida</code> is added)

   * !HwSetup.in:
<pre>
insert SimpleQCD:MatrixElements[0] MEQCD2to2
set /Herwig/Shower/ShowerHandler:MPI Yes
cd /Herwig/UnderlyingEvent
set MPIHandler:Algorithm 1
# Cutoff for secondary scatters
set KtCut:MinKT 3.4
#
# This should always be 2*MinKT!!
set UECuts:MHatMin 6.8
# Set the inverse hadron radius
set MPIHandler:InvRadius 1.5
read UECuts.in
</pre>
 
   * relevant piece of !UECuts.in:
<pre>
cd /Agile
# create the cuts object for hadron collisions
set AgileCuts:ScaleMin 1.0*GeV
set AgileCuts:X1Min 1.0e-5
set AgileCuts:X2Min 1.0e-5
set AgileCuts:MHatMin 30.*GeV
# cut on jet pt 
create ThePEG::SimpleKTCut JetKtCut SimpleKTCut.so
set JetKtCut:Matcher /Herwig/Matchers/StandardQCDParton
set JetKtCut:MinKT 20.*GeV
</pre>

   * Run <code>aidaclean !MinBias.aida > !MinBiasClean.aida</code> to remove strange things from the file (e.g. infinite error bas), which will couse errors when reading in JAS.
   * Compare with data ([[%ATTACHURL%/CDF_2001_S4751469.aida][CDF_2001_S4751469.aida]]) in JAS3.

---++++AGILe
   * [[http://projects.hepforge.org/agile/][AGILe web page]]
   * AGILe is A Generator Interface Library, i.e. a uniform object oriented C++ interface for a variety of Monte Carlo event generators, written in a variety of languages.

---++++ !HZTool
   * [[http://projects.hepforge.org/hztool/][HZTool web page]]
   * HZTool is a library of routines which will allow you to reproduce an experimental result using the four-vector final state from Monte Carlo generators.

---+++Jet agorithms
---++++ !SISCone
   * [[http://projects.hepforge.org/siscone/][SISCone web page]]
   * Seedless Infrared Safe Cone jet algorithm

---++++ !KtJet
   * [[http://projects.hepforge.org/ktjet/][KtJet web page]]
   * C++ implementation of the K&#8869; jet algorithm
   * install: requires CLHEP, <code>./configure --prefix=$HOME/local;make;make install</code>

---++++ KTCLUS
   * [[http://projects.hepforge.org/ktjet/fortran/][KTCLUS web page]]
   * Original fortran implementation of Kt jet algoritm by Mike Seymour





-- FZU.OldrichKepka - 16 Jul 2008<br>
-- FZU.VojtechJuranek - 12 Aug 2008
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aida	CDF_2001_S4751469.aida	manage	146.7 K	14 Aug 2008 - 15:37	VojtechJuranek
pdf	RivetNotes.pdf	manage	580.7 K	14 Aug 2008 - 15:38	VojtechJuranek
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