3.1. Geometry model.
Numerical simulations are carried out using SIMION 8.1 (Scientific
Instrument Services Inc.) [10]. In
numerical simulations, it is crucial to accurately construct the
geometry model of the MRTOF in order to obtain a realistic trajectory of
the ions. Due to limitations in RAM and computing power, the MRTOF model
is divided into four separate geometry arrays with varying precision.
Our high-resolution SIMION model (with an accuracy up to 0.05 mm grid
unit–1) is suitable for predicting ion transmission
through medium and high vacuum systems in mass spectrometry. It also
allows for optimizing operational parameters. The structure of the MRTOF
model is shown in Fig.2.