THE COMPUTER PROGRAMM FOR STATISTICAL MODELLING OF FAST NEUTRONS SCATTERING IS CRYOGENIC DETECTOR OF WEAKLY INTERACTING PARTICLES

The paper describes «Scattronix» code designed for modeling of recoiling nuclei spectra in cryogenic avalanche dark matter detector being calibrated with monoenergetic flow of neutrons. «Scattronix» is the code for direct Monte-Carlo modeling of fast neutrons movement in the active media of detector. The features of the task being solved (rare collisions, elastic scattering domination) allow significant simplification of code structure and consequent performance improvement in comparison with conventional codes for neutron-media interaction modeling. Physical basics of neutron scattering on ⁴⁰Ar nuclei are briefly considered. Algorithm implemented in the code is described. An example of modeled spectra is given and compared with analytical estimation of spectral line width.

Keywords:
cryogenic dark matter detectors, calibration, neutron scattering.
УДК 53.082.79

THE COMPUTER PROGRAMM FOR STATISTICAL MODELLING OF FAST NEUTRONS SCATTERING IS CRYOGENIC DETECTOR OF WEAKLY INTERACTING PARTICLES