Properties of carbon-infused silicon LGAD devices after non-uniform irradiation with 24 GeV/c protons

• DOI: 10.1016/j.nima.2025.170417
• Publication Date: 2025-03-18T00:15:33Z
• Authors: C. Beirão da Cruz...; G. Marozzo; G. Da Molin; J. Hollar; M. Gallinaro; M. Khakzad; S. Bashiri Kahjoq; K. Shchelina
• Keywords: Carbon fibers

Forward proton spectrometers at high-energy proton colliders rely on precision timing to discriminate signal from background. Silicon low gain avalanche diodes (LGADs) are a candidate for future timing detectors in these systems. A major challenge for the use of LGADs is that these detectors must be placed within a few mm of the beams, resulting in a very large and highly non-uniform radiation environment. We present a first measurement of the current and capacitance vs. voltage behavior of LGAD sensors, after a highly non-uniform irradiation with beams of 24 GeV/c protons at fluences up to $1\times10^{16} p/cm^{2}$.