Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Detector
High rate performance of Small-pad Resistive Micromegas. Results of different resistive protection concepts
M. Iodice,* M. Alviggi, V. Canale, M. Della Pietra, C. Di Donato, E. Farina, S. Franchino, P. Iengo, L. Longo, F. Petrucci, E. Rossi, G. Salamanna, G. Sekhniaidze, O. Sidiropoulou
*corresponding author
Full text: pdf
Published on: August 02, 2019
Abstract
We present the development of resistive micromegas aiming at precision tracking in high rate environment without efficiency loss up to several MHz/cm$^2$. To achieve this goal, the optimisation of the spark protection resistive layer and the miniaturisation of the readout elements, are key elements of the project.
Several small-pad micromegas detectors have been built with a anode plane matrix of 48x16 readout pads, rectangular in shape, with dimensions 0.8x2.8 mm$^2$. With this anode/readout layout, different concepts of the spark protection resistive layers have been implemented.
Characterisation and performance studies of the detectors have been carried out by means of radioactive sources, X-Rays, and test beam.
A comparison of the performance obtained with the different resistive layout is presented, in particular focusing on the response under high irradiation and high rate exposure.
DOI: https://doi.org/10.22323/1.340.0664
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