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The system used by SLAC and ALCPG has the SLIC Simulations Package (C++) with the org.lcsim for reconstruction and analysis using Java. This system also uses the JAS3 graphical analysis environment. Much of the functionality within org.lcsim comes from the FreeHep Java Library.
There is a C++ framework developed under ECFA that uses Mokka for the simulator with the MARLIN tool for analysis and reconstruction.
Finally, the ACFA group has a http://root.cern.ch-based suite of softare.
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suite of softare based on the ROOT framework.
Where can I get more information about software?
The LCSim Software Index has links to all the primary tools for ILC Detector Simulations. The Portals Section lists sites that cover full suites of software.
Why are SLIC and org.lcsim the recommended software
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tools?
SLIC is the recommended simulator because it allows great flexibility and power in the specification of the detector by using the LCDD XML formatgeometry. LCDD provides a 100% runtime description of the detector and its associated properties, including the detailed volume hierarchy, assignment and properties of sensitive detectors, and the specification of detector component identifiers, among many other features. In practice, using writing files in this standard standardized format is much easier than trying to author custom C++ code for different each proposed full detector designs design and their subdetectors.
The org.lcsim package is recommended, because it uses the Java programming language, which is generally much easier to get started with and use than C++, especially for those with only partial time to devote to ILC research. Additionally, JAS3 provides a number of integrated tools such as the WIRED event display and an AIDA-compliant plotter.
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The remainder of this FAQ focuses (almost exclusively) on the US/ALCPG/SLAC software suite based on SLIC and org.lcsim. The LCIO file format and its different language implementations ensure a basic level of interoperability between the three disparate systems . |
Where can I get more information about software?
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should you want to "mix and match". |
Feedback
Is there an forum for ILC detector simulation issues?
The linearcollider.org forum is an appropriate place to post your questions on detector simulations and reconstruction and analysis.
How do I file a bug report or make a feature request related to ILC software?
The SLAC Jira Bugtracker allows users to submit bug reports or make feature requests.
The projects relavent to ILC are ...
Each package will be covered in more detail within this FAQ.
How do I file a bug report or make feature request for auxiliary ILC software?
Several packages are used by org.lcsim that are not specific to ILC simulations. There is a separate FreeHep bugtracker for these projects. These Jira projects include ...
How do I get an account on the ILC or FreeHep Jira?
Contact Tony Johnson <tony_johnson@slac.stanford.edu> to obtain an account on either of these systems.
SLIC
What is SLIC?
SLIC stands for "Simulator for the Linear Collider". It is a full simulation package that uses the Geant4 Monte Carlo toolkit to simulate the passage of particles through the detector. SLIC outputs LCIO files that can be analysed using a variety of language bindings, including Java, C++, FORTRAN, and Python. SLIC uses a separate backend for the input of detector data called Linear Collider Detector Description (LCDD), which itself is based on the GDML project from CERN.
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