What is GReAT (Grenoble Analysis Toolkit)
GreAT It is a C++ package for Markov Chain Monte Carlo analyses.
Download GreAT package from https://gitlab.in2p3.fr/derome/GreAT repository or directly get the code using git:
> git clone https://gitlab.in2p3.fr/derome/GreAT.git
> cd GreAT
> cmake .
It requires ROOT sofware available from root.cern.ch.
Putze and Derome, Physics of the Dark Universe 5, 29-34 (2014)
Abstract: The field of astroparticle physics is currently the focus of prolific scientific activity. In the last decade, this field has undergone significant developments thanks to several experimental results from CREAM, PAMELA, Fermi, and H.E.S.S. Moreover, the next generation of instruments, such as AMS-02 (launched on 16 May 2011) and CTA, will undoubtedly facilitate more sensitive and precise measurements of the cosmic-ray and γ -ray fluxes. To fully exploit the wealth of high precision data generated by these experiments, robust and efficient statistical tools such as Markov Chain Monte Carlo algorithms or evolutionary algorithms, able to handle the complexity of joint parameter spaces and datasets, are necessary for a phenomenological interpretation. The Grenoble Analysis Toolkit (GreAT) is an user-friendly and modular object orientated framework in C++, which samples the user-defined parameter space with a pre- or user-defined algorithm. The functionality of GreAT is presented in the context of cosmic-ray physics, where the boron-to-carbon (B/C) ratio is used to constrain cosmic-ray propagation models.