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Loading an LCIO Data File
Download this sample ZPole Data File qqbar sample in the sid02 detector to your harddisk. This data file will be used throughout the example.
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Browse to the data file by clicking on File -> Open, navigating to the directory where the file was saved, selecting the file, and pressing Enter.
If you are asked which plugin to chose for opening the file, choose org.lcsim. This query may or may not appear on your system. (It only shows up if you have multiple plugins installed that can open the file.)
JAS has changed a bit now that the LCIO file is loaded.
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To open the browser, select View File -> New -> LCSim Event Browser.
Only an empty tab reading "LCSim Event" shows, because the plugin requires some data to read.
To feed the LCSim plugin a record, press the Go 1 button. This button has a vertical bar plus a right arrow.
Now, the viewer should be filled with event information.
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View a collection's data by clicking on its corresponding icon in the tree on the lefthand side of the LCSim Event Viewer.
Monte Carlo Particles
Open the MCParticleTree by clicking on it in the lefthand, event tree menu.
This shows the tree-like hierarchy of Monte Carlo Particles (MCParticles) in the event. A particles "children" can be viewed by expanding it using the "+" button.
More detailed information on MCParticles is available from the MCParticles collection, which has one record for every particle in the event.
From this table, you can see the type, energy, momentum, start and ending points, etc. of each particle.
Calorimeter Hit Collections
Select EcalBarrHits from the lefthand, event tree menu.
This view shows one record for each hit in the "EcalBarrHits" collection. These hits are objects of type SimCalorimeterHit. All of the Calorimeter hit collections (including both endcaps and barrels) are decoded in an identical fashion, so the Hcal and Muon collections will look quite similar.
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