XmaxGumbelGenerator

A C++ software program to generate cosmic ray Xmax distributions for a given energy, mass and hadronic model based on a Gumbel model parametrization derived from CONEX simulated showers. It was developed within the Pierre Auger Observatory project and used in the Auger analysis to generate Xmax simulated data in a fast way. It is distributed for research use only under the GNU General Public License v3.0.

Credits

If you use XmaxGumbelGenerator for your research, please acknowledge it in your papers by citing the following references:

M. De Domenico, S. Riggi, "Reinterpreting the development of extensive air showers initiated by UHE nuclei", Pierre Auger Internal GAP Note 2012-030 (2012)
M. De Domenico, M. Settimo, S. Riggi, E. Bertin, "Reinterpreting the development of extensive air showers initiated by nuclei and photons", JCAP 1307 (2013) 050

or consider including me (S. Riggi, INAF - Osservatorio Astrofisico di Catania, Via S. Sofia 78, I-95123, Catania, Italy) as a co-author on your publications.

Status

This software is currently not actively maintained.

Installation

Prerequisites

Install the project mandatory dependencies:

ROOT [https://root.cern.ch/]

Make sure you have set the following environment variables to the external library installation dirs

ROOTSYS: set to ROOT installation prefix

NB: Modify Makefile CPPFLAGS and LDFLAGS in case the dependency tools cannot be found.

Build

To build the project:

Clone this repository into your local $SOURCE_DIR
git clone https://github.com/PierreAugerObservatory/XmaxGumbelGenerator.git $SOURCE_DIR
In the project directory type:
make

Binaries will be placed in the same directory.

Usage

XmaxGumbelGenerator [--energy=[lgE]] [--mass=[A]] [--model=[modelId]] [--nevents=[nevents]] [--save] [--output=[path-to-outputfile]]
       --energy=[lgE] - log10(PrimaryEnergy) (default=19)
       --mass=[A] - NuclearMass (e.g. 1=proton, 4=helium, 56=Fe, etc) (default=1)
       --model=[modelId] - Hadronic model id (1=QGSJETII, 2=SIBYLL, 3=EPOS, 4=QGSJETII-04, 5=EPOS-LHC) (default=QGSJETII)
       --nevents=[nevents] - Number of generated events (default=10000)
       --output=[path-to-outputfile] - Output file name (.root) where to store generated data
       --save - Save generated data to ROOT file without showing graphics (default=false)

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