Characterization of the GEM foil materials
L.Benussi, S.Bianco, G.Saviano, S. Muhammad, D.Piccolo, G.Raffone,, M.Caponero, L. Passamonti, D. Pierluigi, A. Russo, F. Primavera, S.Cerbelli,, A. Lalli, M. Valente, M. Ferrini, B. Teissandier, M. Taborelli, M. Parvis, S., Grassini, J. Tirill\'o, F. Sarasini, A.V. Franchi
TL;DR
This paper investigates the moisture diffusion properties of GEM foil materials, developing and verifying a COMSOL Multiphysics model to understand how moisture affects detector performance.
Contribution
It introduces a detailed diffusion model for GEM foil materials and validates it with experimental data, providing insights into moisture effects on detector properties.
Findings
Moisture diffusion rate measured and modeled.
Model verified with experimental data.
Saturation time and concentration profiles characterized.
Abstract
Systematic studies on the GEM foil material are performed to measure the moisture diffusion rate and saturation level. These studies are important because the presence of this compound inside the detector's foil can possibly change its mechanical and electrical properties and, in such a way, the detector performance can be affected. To understand this phenomenon, a model is developed with COMSOL Multhiphysics v. 4.3, which described the adsorption and diffusion within the geometry of GEM foil, the concentration profiles and the time required to saturate the foil. The COMSOL model is verified by experimental observations on a GEM foil sample. This note will describe the model and its experimental verification results.
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Taxonomy
TopicsSilicone and Siloxane Chemistry