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--- community:hepsim:usage_fast [2016/04/28 18:21]
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+++ community:hepsim:usage_fast [2016/04/28 18:33]
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 ====== Fast detector simulation ======
+====== Downloading ROOT files  ======
+Files after fast detector simulations are created using [[http://cp3.irmp.ucl.ac.be/downloads/Delphes-3.3.0.tar.gz | Delphes-3.3.0]] programs.
+Assuming that you have installed either** hs-tools** or **Jas4pp** programs, you can download
+Here how you can find all samples that have "rfast" tag for download. Click here: [[http://atlaswww.hep.anl.gov/hepsim/list.php?find=rfast]]. If you need to find all ROOT files
+for a give tag, say rfast004, use this command:
+<code bash>
+hs-find tev14_mg5%rfast004
+</code>
+which searches for all samples with the dataset name "tev14_mg5" (Madgraph5, 14 TeV samples).
+Then download a selected sample as:
+<code bash>
+hs-get tev14_mg5_nlo_httbar%rfast004
+</code>
+====== Analysing ROOT files  ======
+Read the [[https://cp3.irmp.ucl.ac.be/projects/delphes| Delphes manual]] explaining how to analyse ROOT files from HepSim.

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