olympus.event_generation.constants

Physical constants for event generation.

Notes

Pandel: https://www.sciencedirect.com/science/article/pii/S0927650507001260

Classes:

  • Constants –

    Collection of useful constants.

Constants

Bases: object

Collection of useful constants.

Attributes:
  • n_gr (float) –

    Group refractive index.

  • n_ph (float) –

    Phase refractive index.

  • c_vac (float) –

    Speed of light in medium units (m/ns).

  • pandel_lambda (float) –

    Pandel lambda parameter (m).

  • pandel_rho (float) –

    Pandel rho parameter (ns^-1).

  • lambda_abs (float) –

    Absorption length (m).

  • lambda_sca (float) –

    Scattering length (m).

  • theta_cherenkov (float) –

    Cherenkov angle in radians.

  • photons_per_GeV (float) –

    Number of photons per GeV of EM cascade energy.
Notes

1 GeV EM cascade corresponds to 5.3 m Cherenkov track length. In the relevant wavelength interval, a single charged particle emits 250 photons/cm.