Sep 12 – 17, 2021
University of Birmingham
Europe/London timezone

Novel zigzag and diamond pattern for Micromegas and Gas-based detector

Sep 16, 2021, 10:51 AM
Teaching and Learning Building (University of Birmingham)

Teaching and Learning Building

University of Birmingham

Edgbaston Campus University of Birmingham B15 2TT UK


Maxence Revolle (CEA)


Gas-based detectors Micromegas are used in many high energy physics experiments to track charged particles. They can cover large areas with homogeneous gain, providing spatial resolution from millimeter to tenth of millimeter.
Micromegas can be read along one projection with strips (1D) or two projections with pads interconnected (2D), but the resolution highly depend of the density (pitch) of the pattern.
In the worse case, a particle hit a single pattern providing a resolution of pitch/$\sqrt{12}$.
To reduce this dependency, novel "zigzag" 1D pattern and "diamond" 2D pattern are tested and optimized to obtain the best resolution regardless of the pitch, in the context of the Electron-Ion Collider R&D on detectors.

Tested using a proton beam at Fermilab Test Beam Facility, zigzag and diamond geometries have been successfully characterized with Micromegas, showing $150\mu m$ 1D spatial resolution with a pitch of 2$mm$.
Identical readout have been tested with other gaseous detectors ($\mu$RWell, GEM) for a complete comparison. For Micromegas, the zigzag pattern have been tested on a full scale prototype of 40x40$cm^2$ with a pitch from 1 to 3$mm$.

In this presentation, it will be shown that zigzag and diamond patterns are efficient geometry for Micromegas and other gaseous detectors, compatible with future large detectors. Details on the characterization, detectors and technologies used will be discussed.

Your name Maxence Revolle
Nationality French
Title Mr
Institute CEA-Irfu

Primary author


Alexander Kiselev Bob Azmoun (Brookhaven National Laboratory) Carlos Perez Lara (Universita & INFN, Torino-Unknown-Unknown) Francesco Bossu (CEA-Saclay) Hugo Denis Antonio Pereira Da Costa (Université Paris-Saclay (FR)) Irakli Mandjavidze (Université Paris-Saclay (FR)) Martin Lothar Purschke (Brookhaven National Laboratory (US)) Maxence Vandenbroucke (Université Paris-Saclay (FR)) Stephan Aune (Université Paris-Saclay (FR))

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