Radiation Campaign of HPK Prototype LGAD sensors for the High-Granularity Timing Detector (HGTD)

Abstract

We report on the results of a radiation campaign with neutrons and protons of Low Gain Avalanche Detectors (LGAD) produced by Hamamatsu (HPK) as prototypes for the High-Granularity Timing Detector (HGTD) in ATLAS. Sensors with an active thickness of 50~$\mu$m were irradiated in steps of roughly 2$\times$ up to a fluence of $3\times 10^{15}{\mathrm{n}}_{\mathrm{eq}}\mathrm{c}{\mathrm{m}}^{-2}$. As a function of the fluence, the collected charge and time resolution of the irradiated sensors will be reported for operation at $-30^{\circ }$.

References in corpus (5)

• Beam test results of a 16 ps timing system based on ultra-fast silicon detectors
• Radiation Hardness of Thin Low Gain Avalanche Detectors
• Beam test measurements of Low Gain Avalanche Detector single pads and arrays for the ATLAS High Granularity Timing Detector
• Gain and time resolution of 45 $\mu$m thin Low Gain Avalanche Detectors before and after irradiation up to a fluence of $10^{15}$ n${}_{eq}$/cm${}^2$
• Layout and Performance of HPK Prototype LGAD Sensors for the High-Granularity Timing Detector

Cited by in corpus (1)

• Layout and Performance of HPK Prototype LGAD Sensors for the High-Granularity Timing Detector