Pixelised Resistive Micromegas for Tracking Detectors in Future Particle Physics Experiments
M.T. Camerlingo*,
M.G. Alviggi,
M. Biglietti,
M.D. Pietra,
R.D. Nardo,
P. Iengo,
M. Iodice,
F. Petrucci,
G. Sekhniaidze and
M. Sessa*: corresponding author
Pre-published on:
April 24, 2025
Published on:
July 29, 2025
Abstract
Here, we present the preliminary results of an R&D project on the resistive Micromegas technology capable of reaching stable and efficient operations up to 10 MHz/cm$^{2}$ rates. These can be achieved by a pixelised detector using readout pads of a few mm$^{2}$ areas, significantly reducing the occupancy of the readout elements. In the most recent prototypes (exploiting two Diamond-Like-Carbon foils), the resistive layers are continuous and uniform, and the charge evacuates through many dot-connections placed several mm apart. Moving towards a larger scale, a new detector, with an active area of $\sim 20\times 20$ cm$^{2}$, was made including Diamond-Like-Carbon foils with a surface resistivity of around 30 M$\Omega/\square$ in its spark protection resistive structure. An overview is reported for a few selected prototypes, with the standard $\sim 5\times 5$ cm$^{2}$ and the new $\sim 20\times 20$ cm$^{2}$ active areas, showing their gain, efficiency, and spatial resolution performance.
DOI: https://doi.org/10.22323/1.468.0118
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