Sergio J. Sciutto
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AIRES (AIRshower Extended Simulations) identifies a set of programs and subroutines to simulate particle showers produced after the incidence of high energy cosmic rays on the earth's atmosphere, and to manage all the data associated with these simulations.
AIRES was developed by S. J. Sciutto at the Department of Physics of the Universidad Nacional de La Plata, Argentina. It is completely written in FORTRAN. The complete AIRES 2.8.4a source code, consists of more than 730 routines, adding up to more than 101,000 source lines extensively commented.
The package includes: (i) The main air shower simulation programs
(Aires, AiresQ, and AiresQII).
(ii) The summary program (AiresSry) designed to process a part
of the data generated by the simulation program, allowing the user to
analyze the results of the simulation after completing it, or even
while it is being run. (iii) The utility program AiresMerge to
merge data contained in different IDF or ADF files. (iv) A converting
program AiresIDF2ADF to generate portable dump files (ADF)
from binary ones (IDF). (v) A library of utilities designed with the
main purpose of processing the compressed output data files generated
by the simulation program.
Note
about QGSJET-II: The present AIRES release includes a link to the
recently developed QGSJET-II hadronic package (version II-03,
developed by S. Ostapchenko). The executable AiresQII is the
one to be used to invoke this model. This program needs about 200 MB
of RAM memory to run. It is important to stress that QGSJET-II needs
two initialization files namely, qgsdat-II-03 and
sectnu-II-03. The first one of these files is very big
(approximately 130 MB) and for this reason it has been decided not to
distribute it together with the AIRES distribution. If QGSJET-II is
invoked without such files, the package will generate them when
called for the first time. This process can take many CPU hours
depending on the speed of your computer. In later invocations the
initialization data will be read in from the generated files if they
are placed in the corresponding working directory.
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