Measurements and simulations of drift gas properties

TL;DR

This paper combines simulations and precise measurements to analyze the drift velocity and related properties of argon-based gas mixtures with additives, essential for optimizing gas-based particle detectors.

Contribution

It provides new detailed measurements and simulations of drift velocities in argon-based mixtures with various additives at low electric fields.

Findings

Drift velocities characterized for multiple gas mixtures.

Additive effects on drift properties quantified.

Data supports improved detector design.

Abstract

For the successful design and operation of gas based particle detectors, one needs a good understanding of the drift properties of the deployed gas. This includes the drift velocity of electrons, their diffusion and the gas amplification in different electric and magnetic fields. This work presents simulations and precision measurements of the drift velocity vd in low electric fields (< 400 V/cm) for argon-based gas mixtures with up to two additives. The additives used are CH4, CO2, CF4, iC4H10 and H2.