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fcs:eic [2016/03/21 19:01] asc |
fcs:eic [2016/11/06 19:14] asc |
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| - | This wiki explains how to view electron-proton collision events. To analyse events for such studies, install [[http:// | ||
| - | |||
| - | <code bash> | ||
| - | wget http:// | ||
| - | tar -zvxf jas4pp.tgz | ||
| - | cd jas4pp | ||
| - | source setup.sh # takes 5 sec for first-time optimization | ||
| - | </ | ||
| - | |||
| - | The last command optimizes Java packages for the Python language. | ||
| - | Now you are ready to run over any file with truth-level and datector-simulation files, such as LCIO and ProMC. This program allows you: | ||
| - | |||
| - | * Downloading and searching HepSim data | ||
| - | * Processing ProMC files from HepSim | ||
| - | * Running over SLCIO files with Geant4 simulated / reconstructed events. | ||
| - | * Data analysis (jets, physics vectors, histogram packages) | ||
| - | * Visualisation of reconstructed events using Wired4 display | ||
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| - | |||
| - | |||
| - | We will use e-p events shown in [[http:// | ||
| - | The full simulation files are located under the tag " | ||
| - | |||
| - | ====== Visualizing events with Jas ====== | ||
| - | |||
| - | First, install [[https:// | ||
| - | Then copy the detector geometry file to the local directory where the file " | ||
| - | <code bash> | ||
| - | wget http:// | ||
| - | </ | ||
| - | This creates a directory " | ||
| - | in [[http:// | ||
| - | |||
| - | Now we can visualize the detector as **[File]-[Open data source]-[HepRep]** XML and select file " | ||
| - | This is how to do this using the command line: | ||
| - | |||
| - | <code bash> | ||
| - | jas4pp sidloi3/ | ||
| - | </ | ||
| - | Now you should see the detector layout. | ||
| - | |||
| - | Next, we will read the simulated events: Open any *.slcio file you copied from HepSim using the menu | ||
| - | **[File]-[Open data source]-[LCIO]** | ||
| - | For e-p events, use this LCIO file from [[http:// | ||
| - | |||
| - | <code bash> | ||
| - | wget http:// | ||
| - | </ | ||
| - | |||
| - | |||
| - | |||
| - | Then click a small button [Go] (top menu bar). It will process | ||
| - | | ||
| - | do this **[File]-[New]-[LCSim Event browser]** | ||
| - | |||
| - | ===== Event display ===== | ||
| - | |||
| - | Here are images of ep collision with a scattered electron identified using the PFA. | ||
| - | The images were done using DIS ep samples [[http:// | ||
| - | Reconstructed electron energy from PFA: E=16.92 GeV | ||
| - | “EVGEN” energy: | ||
| - | |||
| - | {{: | ||
| - | |||
| - | {{: | ||
| - | |||
| - | |||
| - | ====== Now to analyse full simulations | ||
| - | |||
| - | |||
| - | Please read [[https:// | ||
| - | |||
| - | --- // | ||
| + | * **[[fcs: | ||
fcs/eic.txt · Last modified: 2016/11/06 19:17 by asc
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