Danton#
(DecAyiNg Taus frOm Neutrinos)
Danton is a Python package designed specifically for the sampling of tau decays from ultra-high energy neutrinos interacting with the Earth’s surface. It is capable of running in forward or backward Monte Carlo, and can also be configured to sample tau fluxes instead of decay densities, or to sample transmitted neutrino fluxes.
The interface has been designed with simplicity in mind. That is, Monte Carlo
particles are injected into the simulation Geometry as a numpy.ndarray, and
numpy.ndarrays of Monte Carlo states are returned. This
basic workflow is illustrated below,
import danton
simulation = danton.Simulation()
particles = danton.particles(10000, energy=1E+09, elevation=1.0)
result = simulation.run(particles)
System of units#
Note
Danton employs the Metre-Kilogram-Second (MKS) system of units (e.g. kg/m3 for a density), with the exception of energies and momenta, which are expressed in GeV and GeV/c, respectively. Additionally, angles (e.g. geodetic coordinates) are expressed in degrees.