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.
@article{arxiv.1512.08621,
title = {Characterization of the GEM foil materials},
author = {L. Benussi and S. Bianco and G. Saviano and S. Muhammad and D. Piccolo and G. Raffone and M. Caponero and L. Passamonti and D. Pierluigi and A. Russo and F. Primavera and S. Cerbelli and A. Lalli and M. Valente and M. Ferrini and B. Teissandier and M. Taborelli and M. Parvis and S. Grassini and J. Tirilló and F. Sarasini and A. V. Franchi},
journal= {arXiv preprint arXiv:1512.08621},
year = {2015}
}
Comments
Four pages, eight figures, presented by S. Muhammad at the MPGD2015, Trieste, Italy