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fcs:eic [2016/03/18 20:11]
asc 		fcs:eic [2016/11/06 19:17] (current)
asc
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-====== Electron ion collier studies ======+[[community:hepsim:|<< back to HepSim manual]]
  
-This wiki explains how to view electron-proton collision events. The analysis package is described in +====== EIC software and detector studies ======
-[[https://atlaswww.hep.anl.gov/asc/wikidoc/doku.php?id=fcs:fpad| FPadSoft]]+
  
  
-We will use e-p events shown in [[http://atlaswww.hep.anl.gov/hepsim/index.php?c=emp&e=141&t=all]]. +  * **[[fcs:eic:intro| Introduction to EIC examples]]**
-The full simulation files are located under the tag "rfull001", which corresponds to SiD simulations. +
- +
-====== Visualizing events with Jas ====== +
- +
-First, install [[https://atlaswww.hep.anl.gov/asc/wikidoc/doku.php?id=fcs:fpad| FPadSoft]]. +
-Then copy the detector geometry file to the local directory where the file "fjas" is: +
-<code bash> +
-wget http://atlaswww.hep.anl.gov/hepsim/soft/detectors/sidloi3.tgz -O - | tar -xz; +
-</code> +
-This creates a directory "sidloi3". This detector corresponds to "rfull001" tag used for the reconstruction of events +
-in [[http://atlaswww.hep.anl.gov/hepsim/index.php?c=emp&e=141&t=all]]. +
- +
-Now we can visualize the detector as **[File]-[Open data source]-[HepRep]** XML and select file "sidloi3/sidloi3.heprep". +
-This is how to do this using the command line: +
- +
-<code bash> +
-./fjas sidloi3/sidloi3.heprep +
-</code> +
-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://atlaswww.hep.anl.gov/hepsim/show.php?item=159&reco=rfull001|rfull001]]. +
- +
-<code bash> +
-wget http://mc.hep.anl.gov/asc/hepsim/events/ep/141gev/lepto6ard_dis5q2//rfull001/lepto6ard_dis5q2_0001_pandora.slcio +
-</code> +
- +
- +
- +
- Then click a small button [Go] (top menu bar). It will process +
- events.  Then select again **[File]-[New]-[Wired 4 view]**. If you want to see how data records are organized inside the slcio file, +
-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://atlaswww.hep.anl.gov/hepsim/info.php?item=159]]. +
-Reconstructed electron energy from PFA:  E=16.92 GeV  +
-“EVGEN” energy:  16.90 GeV +
- +
-{{:fcs:eic_ep.png?400}} +
- +
-{{:fcs:eic_ep1.png?400}} +
- +
- +
-====== Now to analyse full simulations  ====== +
- +
- +
-Please read  [[https://atlaswww.hep.anl.gov/asc/wikidoc/doku.php?id=fcs:fpad| FpadSoft]] +
- +
- --- //[[[email protected]|Sergei Chekanov]] 2016/01/22 20:36// +
fcs/eic.1458331897.txt.gz · Last modified: 2016/03/18 20:11 by asc

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