Changes between Version 4 and Version 5 of WorkBook/TutorialBologna

Timestamp:

Jun 8, 2016, 2:09:38 PM (8 years ago)

Author:

Michele Selvaggi

Comment:

--

WorkBook/TutorialBologna

@@ -240 +240 @@
 - m (e+ e- mu+ mu-)
 
-Download the "HZZ.C" macro and save in the "examples" directory. Then open it with your favorite text editor, and make sure you understand what it does. Then run it:
+[https://cp3.irmp.ucl.ac.be/projects/delphes/raw-attachment/wiki/WorkBook/TutorialBologna/HZZ.C Download] the HZZ.C macro and save in the "examples" directory. Then open it with your favorite text editor, and make sure you understand what it does. Then run it:
 {{{
 root -b -q  examples/HZZ.C'("delphes_output_m125.root")'; 
@@ -251 +251 @@
 Now redo this analysis, but this time using the mH = 750 GeV input file. Do not edit directly the HZZ.C file, make a copy of it and edit the copy rather.
 
-- Spot and explain the differences with the mH = 125 GeV case.
+- Spot the differences with the mH = 125 GeV case and explain them.
+
+=== Part III - The detector card (or configuration file) ===
+
+Delphes is a modular framework. The modular system allows the user to configure and schedule modules via a configuration file, add modules, change data flow, alter output information.
+
+A module is schematically a piece of code that takes as input one or more arrays of objects (TObjArray) and produces one or more arrays of objects. It has a set of configurable parameters (i.e. resolutions, efficiencies parameterisations, magnetic field value, calorimeter granularity, ...).
+
+All the modules and data-flow are configured in the detector card. You can find several pre-configured detector cards in the "cards" directory.
+
+0) Open the CMS card with your favorite and try to understand it:
+
+The card can be schematically divided in three parts:
+
+- The "!ExecutionPath" is where the simulation/reconstruction sequence of modules is defined
+- The list of modules configurations.
+- The !TreeWriter, where the user defines which objects he stores in the output tree.
+
+You can find an explanation for most modules here:
+
+https://cp3.irmp.ucl.ac.be/projects/delphes/wiki/WorkBook/Modules
+
+1) Modify the muon resolution. First copy the existing card. We will edit that later. 
+{{{
+cp cards/delphes_card_CMS.tcl cards/delphes_card_CMS_mod.tcl
+}}}
+In the newly copied card "cards/delphes_card_CMS_mod.tcl" find where the muon resolutions
+are defined and make them worse by a factor 5.
+
+Re-run the simulation and analysis, and appreciate the effect of worsening the smearing.
+
+{{{
+./DelphesSTDHEP cards/delphes_card_CMS_mod.tcl delphes_output_m125_mures5x.root input/pp_h_eemm_m125.hep
+root -b -q examples/HZZ.C'("delphes_output_m125_mures5x.root")'
+}}}
+
+2) Now, apply a similar worsening on the electrons, and re-run:
+
+{{{
+./DelphesSTDHEP cards/delphes_card_CMS_mod.tcl delphes_output_m125_mures5x_ele5x.root input/pp_h_eemm_m125.hep
+root -l examples/HZZ.C'("delphes_output_m125_mures5x_ele5x.root")'
+}}}
+What do you see? Explain ... (hint: Particle-Flow)
+
+Now find the ECAL resolution and apply the same 5x worsening, and re-run:
+
+{{{
+./DelphesSTDHEP cards/delphes_card_CMS_mod.tcl delphes_output_m125_mures5x_ele5x_v2.root input/pp_h_eemm_m125.hep
+root -l examples/HZZ.C'("delphes_output_m125_mures5x_ele5x_v2.root")'
+}}}
+
+