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Manuscript Title: The Monte Carlo code NUCRIN to simulate inelastic hadron-nucleus interactions at laboratory energies below 5 GeV.
Authors: K. Hanssgen, J. Ranft
Program title: NUCRIN
Catalogue identifier: AADO_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 39(1986)53
Programming language: Fortran.
Computer: ESER, IBM SYSTEM 370.
Operating system: MVT, SVS.
RAM: 28K words
Word size: 32
Keywords: Monte carlo, High energy reaction, Event simulation, Hadron-nucleus Interaction, Nucleus cascade, Hadron production, Particle physics, Elementary.
Classification: 11.2.

Subprograms used:
Cat Id Title Reference
AADN_v1_0 HADRIN CPC 39(1986)37
ACFS_v1_0 DECAY CPC 31(1984)411

Nature of problem:
The inelastic interaction of a high energy hadron with a nucleus is simulated. The model uses the parameterized emission of cascade nucleons from the nucleus and one inelastic hadron-nucleon collision. The nucleon Fermi-momentum inside the nucleus is taken into account. Stopping of negative mesons inside the nucleus is possible. The model samples events, which conserve the energy and the additive quantum numbers.

Solution method:
The Monte Carlo simulation of the interaction is based on tabulated particle properties, interaction cross sections and empirical parameterized scattering and emission formulae. The model uses the Monte Carlo codes DECAY and HADRIN. The kinematic variables of the secondary particles and particle type index numbers are stored in tables of the program.

Restrictions:
The model is applicable for a laboratory energy region of the primary hadron from about 50 MeV up to 5 GeV. The restrictions of the Monte Carlo code HADRIN are valid for the description of hadron nucleon interactions. Primary and secondary hadrons may be pions, kaons, nucleons, hyperons and all their antiparticles.

Running time:
NUCRIN needs for one eventsimulation about 0.05-0.08 s central processor time on an ESER 1040 computer or 0.003s on the IBM 3081, dependent on the momentum of the primary hadron and on the target nucleus size.