PoS - Proceedings of Science
Volume 314 - The European Physical Society Conference on High Energy Physics (EPS-HEP2017) - Detector R&D and Data Handling (Poster Session). Scientific Secretary: Luciano Canton.
Small-pad Resistive Micromegas for Operation at Very High Rates
P. Iengo*, M.G. Alviggi, M.T. Camerlingo, V. Canale, M. Della Pietra, C. Di Donato, C. Grieco, M. Biglietti, M. Iodice, F. Petrucci, E. Rossi, V. Vecchio, E. Farina, S. Franchino, G. Sekhniaidze and O. Sidiropoulou
Full text: pdf
Pre-published on: January 16, 2018
Published on: March 20, 2018
Abstract
Resistive Micromegas detectors have proved to be suitable for precision tracking in dense particle rate
environment up to few kHz/cm$^2$. Rate capability up to few MHz/cm$^2$ and low occupancy can be achieved by using few
mm$^2$ readout pads. Such a rate capability will be required in upgrades of forward muon detectors of LHC experiments
as well as in experiments at future colliders.
We present the development of resistive micromegas with O(mm$^2$) pad readout aiming at precision tracking in high
rate environment without efficiency loss up to several MHz/cm$^2$.

A first small-pad prototype has been designed, constructed and tested. It consists of a matrix of 48x16 pads. Each pad
has rectangular shape with a pitch of 1 and 3 mm in the two coordinates. The active surface is 4.8x4.8 cm$^2$ with a
total number of 768 channels.
Characterization and performance studies of the detector have been carried out by means of radioactive sources, high
irradiation X-Rays and test beam. The results will be presented, along with recent developments aiming at
the construction of fully scalable, thousands-channels small-pad detectors.
DOI: https://doi.org/10.22323/1.314.0793
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