Recent enhancements to the MARS15 code
1 Fermi National Accelerator Laboratory, MS 220, Batavia, IL 60510-0500, USA
2 Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev, MD-2028, Moldova
3 Los Alamos National Laboratory, MS B283, Los Alamos, NM 87545, USA
4 University of Illinois at Chicago, 845 W. Taylor street, Chicago, IL 60607, USA
5 University of Illinois at Urbana-Champaigne, 1110 W. Green street, Urbana, IL 61801-3080, USA
* Corresponding author: mokhov{at}fnal.gov
The MARS code is under continuous development and has recently undergone substantial improvements that further increase its reliability and predictive power in numerous shielding, accelerator, detector and space applications. The major developments and new features of the MARS15 (2004) version described in this paper concern an extended list of elementary particles and arbitrary heavy ions and their interaction cross sections, inclusive and exclusive nuclear event generators, module for modelling particle electromagnetic interactions, enhanced geometry and histogramming options, improved MADMARS Beam Line Builder, enhanced graphical user interface and an MPI-based parallelisation of the code.