Speaker
Description
Trench-isolated LGADs (TI-LGADs), developed at FBK, are devices in which pixelated LGAD pads are separated by physical trenches etched into the silicon substrate and filled with a dielectric material. Designed as an alternative to implant-based inter-pad isolation techniques (such as JTEs), this technology offers a significant reduction in dead regions, thereby mitigating fill-factor limitations inherent to small-pixel LGAD matrices.
In this study, we present results from a 120 GeV pion test beam campaign at CERN SPS using carbon-infused single-trench TI-LGADs with varying trench widths. Investigated samples were irradiated with neutrons up to a fluence of 2.5×10^15 neq/cm². Tracking information provided by a MIMOSA26-based beam telescope and time information from a reference LGAD detector are used to evaluate the TI-LGAD efficiency, spatially resolved time resolution and inter-pixel performance. Preliminary results from April and October 2025 campaigns will be shown.
| Type of presentation (in-person/online) | in-person presentation |
|---|---|
| Type of presentation (I. scientific results or II. project proposal) | I. Presentation on scientific results |
