Acts Common Tracking Software

or A Common Tracking Software if you do not like recursive acronyms

10.5281/zenodo.3606011 Chat on Mattermost coverage

Acts is an experiment-independent toolkit for (charged) particle track reconstruction in (high energy) physics experiments implemented in modern C++.

More information can be found on the Acts website and in the Acts documentation.

Quick start

Acts is developed in C++ and is build using CMake. Building the core library requires a C++17 compatible compiler, Boost, and Eigen. The following commands will clone the repository, configure, and build the core library

git clone <source-dir>
cmake -B <build-dir> -S <source-dir>
cmake --build <build-dir>

For more details, e.g. specific versions and additional dependencies, have a look at the getting started guide. If you find a bug, have a feature request, or want to contribute to Acts, have a look at the contribution guide.

Repository organization

The repository contains all code of the Acts projects, not just the core library that a physics experiment is expected to use as part of its reconstruction code. All optional components are disabled by default. Please see the getting started guide on how-to enable them.

Authors and license

Contributors to the Acts project are listed in the AUTHORS file.

The Acts project is published under the terms of the Mozilla Public License, v. 2.0. A copy of the license can be found in the LICENSE file or at .

The Acts project contains copies of the following external packages: