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hepsim:dev_fast [2017/03/19 13:51]
hepsim17 [Reproducing HepSim simulations] 		hepsim:dev_fast [2017/03/19 20:11]
hepsim17 [Creating Delphes files]
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 [[:|<< back to HepSim manual]] [[:|<< back to HepSim manual]]
  
-Fast simulations in the HepSim are posted under the [[http://atlaswww.hep.anl.gov/hepsim/list.php?find=rfast | rfast link]]. The detectors configurations are posted +====== Creating Delphes files ====== 
-to [[http://atlaswww.hep.anl.gov/hepsim/detectors.php|this link]].+ 
 + 
 +Fast simulations in the HepSim are posted under the [[http://atlaswww.hep.anl.gov/hepsim/list.php?find=rfast|rfast link]]. The detectors configurations are posted to [[http://atlaswww.hep.anl.gov/hepsim/detectors.php|this link]].
  
 ===== Creating Delphes files  ===== ===== Creating Delphes files  =====
  
-Here we describe how to make fast detector simulation files  +Here we describe how to make fast detector simulation files  using separate external libraries, without installing FastHepSim. Use the [[https://cp3.irmp.ucl.ac.be/projects/delphes | Delphes]] fast detector simulation program to process the MC events. Delphes can read [[http://atlaswww.hep.anl.gov/asc/promc/ | ProMC]] files directly. First, make sure that ProMC and ROOT library is installed:
-using separate external libraries, without installing FastHepSim. +
-Use the [[https://cp3.irmp.ucl.ac.be/projects/delphes | Delphes]] fast detector simulation program to process the MC events. Delphes can read [[http://atlaswww.hep.anl.gov/asc/promc/ | ProMC]] files directly. First, make sure that ProMC and ROOT library is installed:+
 <code bash> <code bash>
 echo $PROMC $ROOTSYS echo $PROMC $ROOTSYS
 </code> </code>
-This should point to the installation paths of ProMC and ROOT. +This should point to the installation paths of ProMC and ROOT. The detectors configurations for Delphes together with appropriate Delphes package are posted to [[http://atlaswww.hep.anl.gov/hepsim/detectors.php#fast|this link]]. 
-  +Copy the ZIP file with Delphes card and Delphes package and compile it. 
-Here are the steps to perform a  fast detector simulation using ProMC files from the HepSim repository:+ 
 +Here is an example of how to re-create fast simulations for "rfast100" tag, which  
 +corresponds to the detector "delphes_atlas1" (look at the detector definition page).
  
-1) Download [[http://cp3.irmp.ucl.ac.be/downloads/Delphes-3.3.0.tar.gz | Delphes-3.3.0.tar.gz]] (or higher) and compile it as:  
 <code bash> <code bash>
-wget http://cp3.irmp.ucl.ac.be/downloads/Delphes-3.2.0.tar.gz +det="delphes_atlas1" # define detector 
-tar -zvxf Delphes-3.3.0.tar.gz +wget http://atlaswww.hep.anl.gov/hepsim/soft/detectors/$det.zip 
-cd Delphes-3.3.0 +unzip $det.zip 
-./configure +cd $det 
-make+tar --strip-components=1 -zvxf Delphes*.tar.gz # untar in the current directory 
 +./configure; make                              # configure and compile                                      
 +</code>                                         
 +The last command should create the binary file "DelphesProMC". Now you can process a ProMC file: 
 + 
 +<code bash> 
 +wget http://mc.hep.anl.gov/asc/hepsim/events/pp/14tev/mg5_ttbar_jet/mg5_ttbar_jet_001.promc 
 +./DelphesProMC card.tcl mg5_ttbar_jet_001.root mg5_ttbar_jet_001.promc
 </code> </code>
-This  creates the converter "DelphesProMC" (among others), if "PROMC" environmental variable is detected. +This commands creates a ROOT file with fast simulations. 
 + 
 +<note> 
 +Detector configuration files [detector].zip include the Delphes source code  used to make the simulation tag,  
 +and the input control card "card.tcl" that defines the geometry. Look at [[http://atlaswww.hep.anl.gov/hepsim/detectors.php#fast|this link]]. 
 +</note> 
 + 
 +You can create a complete list of input files. Here is how to do this:
  
-2)  For FCC studies, copy and modify the detector configuration file "delphes_card_FCC_basic.tcl"  
 <code bash> <code bash>
-cp cards/delphes_card_FCC_basic.tcl delphes_card_FCC_notau.tcl+hs-ls [setname] simple     > input.list     # list of ProMC files (without URL path) 
 +hs-ls [setname] simple-url > input_url.list # list with URL from the main server 
 +# create a setup array with input files 
 +declare -a wwwarray   
 +n=0 
 +while read -r line 
 +do 
 +    name=$line 
 +    wwwarray[$n]=$name  
 +    let "n = $n + 1" 
 +done < "inputlist_url.txt"
 </code> </code>
-Then remove the line "TauTagging". Do the same when using the card "cards/delphes_card_ATLAS.tcl" (for ATLAS). +where [setname] is the dataset name, such as "tev100_ttbar_mg5". 
-We do not use  the tau tagging module since it requires complete event records with all mother particles. Since ProMC files are often slimmed by removing some unstable low pT particles and showered partons, Delphes will fail on this line. If you need tau tagging, please use ProMC files with complete particle record.+If you know URL of the mirror, replaces [setname] with qualified URL pointing to your dataset. Now, you have the necessary tools. Fetch the list of URLs with input files, and make a loop over files. 
  
-3) Download Monte Carlo files from the [[ http://mc.hep.anl.gov/asc/hepsim/events/?dir=pp/100tev | 100 HepSim repository]]. + 
-For example, get a file with 5000 ttbar events generated for a 100 TeV collider:+One can also run Delphes in an automated mode, without the above scripts. You need to use "hs-exec" command.
 <code bash> <code bash>
-wget http://mc.hep.anl.gov/asc/hepsim/events/pp/100tev/ttbar_mg5/mg5_ttbar_100tev_001.promc+hs-exec DelphesProMC card.tcl output.root [URL] [Nfiles]
 </code> </code>
 +where [URL] is HepSim location of files and  [Nfiles] is the number of files for processing.
 +The output ROOT will be located inside "hepsim_output" directory.
 +
 +Here is a small example:
 +<code bash>
 +hs-exec DelphesProMC card.tcl output.root http://mc.hep.anl.gov/asc/hepsim/events/pp/14tev/mg5_ttbar_jet/ 5
 +</code>
 +which processes 5 files from [[http://atlaswww.hep.anl.gov/hepsim/info.php?item=143/|HiggsToTTbar sample]]. Skip "5" at the end to process all files.                                                                                                                                                              
 +
 +
 +
 +====== Creating files manually ======
 +
 +
 +If you want to create a new simulations with updated Delphes and input cards, follow these steps:
  
-and then create a ROOT file with reconstructed objects after a  fast detector simulation (FCC detector): 
  
 +(1) Download [[http://cp3.irmp.ucl.ac.be/downloads/ | current Delphes ]] (or higher) and compile it as: 
 <code bash> <code bash>
-./DelphesProMC delphes_card_FCC_notau.tcl  mg5_ttbar_100tev_001.root mg5_ttbar_100tev_001.promc+tar -zvxf Delphes-X.X.Xtar.gz 
 +cd Delphes-X.X.X.tar.gz 
 +./configure 
 +make
 </code> </code>
-The conversion typically takes 30 seconds.+where "X.X.X" is the version of Delphes. This  creates the converter "DelphesProMC" (among others), if "PROMC" environmental variable is detected. 
  
-===== Reproducing HepSim simulations  ===== +(2)  Copy and modify the detector configuration files. The configuration files with the extension "tcl" can be found in [[http://atlaswww.hep.anl.gov/hepsim/detectors.php|this link]]
-The detectors configurations for Delphes together with appropriate Delphes package +
-are posted to [[http://atlaswww.hep.anl.gov/hepsim/detectors.php|this link]]. +
-Copy the ZIP file with Delphes card and Delphes package and compile it.+
  
-Here is an example of how to re-create fast simulations for "rfast100" tag, which  +Often,  the line "TauTagging" from the Delphes control card. We do not use  the tau tagging module since it requires complete event records with all mother particles. Since ProMC files are often slimmed by removing some unstable low pT particles and showered partons, Delphes will fail on this line. If you need tau tagging, please use ProMC files with complete particle record.
-corresponds to the detector "delphes_atlas1" (look at the detector definition page).+
  
 +Download Monte Carlo files from the [[ http://mc.hep.anl.gov/asc/hepsim/events/?dir=pp/100tev | 100 HepSim repository]].
 +For example, get a file with 5000 ttbar events generated for a 100 TeV collider:
 <code bash> <code bash>
-echo $PROMC          # make sure ProMC variable is defined. Must be non-empty  +wget http://mc.hep.anl.gov/asc/hepsim/events/pp/100tev/ttbar_mg5/mg5_ttbar_100tev_001.promc 
-echo $ROOTSYS        # make sure ROOT is installed. Must be non-empty +</code> 
-det="delphes_atlas1" # define detector + 
-wget http://atlaswww.hep.anl.gov/hepsim/soft/detectors/$det.zip +and then create a ROOT file with reconstructed objects after a  fast detector simulation (FCC detector): 
-unzip $det.zip + 
-cd $det +<code bash> 
-tar --strip-components=1 -zvxf Delphes*.tar.gz # untar in the current directory +./DelphesProMC card.tcl  mg5_ttbar_100tev_001.root mg5_ttbar_100tev_001.promc
-./cofigure +
-./DelphesProMC card.tcl  file.promc # run using input ProMC file+
 </code> </code>
  
hepsim/dev_fast.txt · Last modified: 2018/04/27 16:35 by hepsim17
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