Important remarks

As outlined above, the cascade equations are one-dimensional. This of course means that if applied down to lowest energies, results cannot be right. The Seneca model gives you a lot of freedom in setting relevant parameters, and this freedom comes with a lot of responsibility. When changing parameters, you should always cross-check some typical shower with the full Monte Carlo method, so that the results are within the precision you require. This can be done by comparing average showers or by comparing showers with the same initial seed and the same high energy showering part (see fseed command at the end of this document). This concerns especially variables like Emin, Emax, Elow, but also themin (angle in Fig. 2), for lateral behaviour at lower energies.