An ageing study of resistive micromegas for the HL-LHC environment
Abstract
Resistive-anode micromegas detectors are in development since several years, in an effort to solve the problem of sparks when working at high flux and high ionizing radiation like in the HL-LHC (up to ten times the luminosity of the LHC). They have been chosen as one of the technologies that will be part of the ATLAS New Small Wheel project (forward muon system). An ageing study is mandatory to assess their capabilities to handle the HL-LHC environment on a long-term period. A prototype has been exposed to several types of irradiation (X-rays, cold neutrons, Co gammas and alphas) above the equivalent charge produced at the detector in five HL-LHC running years without showing any degradation of the performances in terms of gain and energy resolution. This study has been completed with the characterization of the tracking performances in terms of efficiency and spatial resolution, verifying the compatibility of results obtained with both resistive micromegas detectors, irradiated and non-irradiated one.
Keywords
Cite
@article{arxiv.1301.7648,
title = {An ageing study of resistive micromegas for the HL-LHC environment},
author = {J. Galán and D. Attié and E. Ferrer-Ribas and A. Giganon and I. Giomataris and S. Herlant and F. Jeanneau and A. Peyaud and Ph. Schune and T. Alexopoulos and M. Byszewski and G. Iakovidis and P. Iengo and K. Ntekas and S. Leontsinis and R. de Oliveira and Y. Tsipolitis and J. Wotschack},
journal= {arXiv preprint arXiv:1301.7648},
year = {2015}
}