Error analysis for Magboltz or gas file

Garfield++
1

Hello.

I am curious about something analysing .gas file data.
I have understood that ncoll in gas.GenerateGasTable(ncoll) defines the number of collision multiplied by 1e+7 while an electron moves through the gas. However, in my opinion, since Magboltz is based on the Monte-Carlo simulation, numerous times of simulations or independent events are required to form error bar or analyse it. Is my opinion wrong or not useful?

I think I do insufficiently understood the principle of Magboltz or gas file.

2

Hi,
thanks for your question! With a suitable choice of the initial conditions (in particular the initial kinetic energy), the time average approach (following a single electron over many collisions) and the ensemble average approach should be equivalent, i. e. give statistically compatible results for the transport parameters (drift velocity, diffusion coefficients, etc.).