Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] aefo_v1_0.tar.gz(3185 Kbytes)
Manuscript Title: TIERRAS: a package to simulate High Energy Cosmic Ray showers underground, underwater and under-ice
Authors: Matías Tueros, Sergio Sciutto
Program title: TIERRAS for AIRES
Catalogue identifier: AEFO_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 181(2010)380
Programming language: Fortran 77 and C.
Computer: PC, Alpha, IBM, HP, Silicon Graphics and Sun workstations.
Operating system: Linux, DEC Unix, AIX, SunOS, Unix System V.
RAM: 22 Mb bytes
Keywords: Cosmic Rays, Underground Laboratories, Montecarlo Simulations.
PACS: 13.85.Tp, 07.05.Tp, 95.55.Vj.
Classification: 1.1.

External routines: TIERRAS requires AIRES 2.8.4 to be installed on the system. AIRES 2.8.4 can be downloaded from http://www.fisica.unlp.edu.ar/auger/aires/eg_AiresDownload.html

Nature of problem:
Simulation of high and ultra high energy underground particle showers.

Solution method:
Modification of the AIRES 2.8.4 code to accommodate underground conditions.

Restrictions:
In AIRES some processes that are not statistically significant on the atmosphere are not simulated. In particular, it does not include muon photo-nuclear processes. This imposes a limitation on the application of this package to a depth of 1 Km of standard rock (or 2.5 Km of water equivalent). Neutrinos are not tracked on the simulation, but their energy is taken into account in decays.

Running time:
A TIERRAS for AIRES run of a 1020 eV shower with statistical sampling (thinning) below 1012 eV and 0.2 weight factor (see [1]) uses approximately 1h of CPU time on an Intel Core 2 Quad Q6600 at 2.4 Ghz. It uses only one core, so 4 simultaneous simulations can be run on this computer. Aires includes a spooling system to run several simultaneous jobs of any type.

References:
[1] Aires UserManual S. Sciutto, AIRES 2.6 user Manual, www.fisica.unlp.edu.ar/aires