<< back to HepSim manual

Analyzing events

The Monte Carlo files (truth level, fast simulations and full simulations) can be accessed from the HepSim repository link. Currently these studies are based on Jas4pp data-analysis environment. Geometry files for full detector simulations can be found in the detector repository.

You have several choices for data analysis:

  • Using the hs-tools package. It is designed for downloading files and processing truth-level files using Python/Jython scripts (or using Java)
  • Using Jas4pp. It is similar to the above package, but it has packages needed to process full-simulation samples (SLCIO files).
  • Using C++/ROOT. If you run over ProMC (truth-level) files, look at the manual ProMC manual. If you run over ROOT files from Delphes, use Delphes manual. If you analyse LCIO files with full simulation, look at LCIO manual.

Some analysis examples implemented in Python and C++ can be found in here. Here are more resources:

  • https://github.com/hepsim-org/analysis - shows analysis examples illustrating how to read ProMC and LCIO files.
  • ProMC validation - lists examples that read ProMC files. The examples are implemented in Jython/Python. They can be converted to Java.
  • LCIO validation - lists examples that read LCIO files. The examples are implemented in Jython/Python. They can be converted to Java.

Finding detector simulations

Every entry in the HepSim has “truth-level” files (created by Monte Carlo generators) and reconstruction tags: Data after processing by the fast simulation program (Delphes) have the tag “rfastNNN” (NNN is a number), while data after full simulation have the tag “rfullNNN” (NNN is a number). The info pages for each sample has the link to the tag and the information page describing the detector.

If you need to find all samples for a given tag, use the search page. Then type the tag name. For example, if you are searching for the “rfull006” reconstruction tag, this page returns a complete list of Monte Carlo samples which were processed for a given detector.

Physics and detector studies

Here are several links to extending this Wiki for particular detector-performance topics:

Currently these studies are based on Jas4pp data-analysis environment. Geometry files for full detector simulations can be found in the detector repository.

This manual describes how to work with truth-level samples posted on HepSim. HepSim Python/Java analysis page explains how to write code to read truth-level files using Python on the Java platform.

Sergei Chekanov 2016/04/27 11:37

hepsim/usage.txt · Last modified: 2018/08/28 16:47 by hepsim17
Back to top
CC Attribution-Share Alike 4.0 International
Driven by DokuWiki Recent changes RSS feed Valid CSS Valid XHTML 1.0