Low Gain Avalanche Detectors for 4-dimensional Tracking Applications in Severe Radiation Environments

JPS Conf. Proc. 34, 010015 (2021) [10 pages]

Proceedings of the 29th International Workshop on Vertex Detectors (VERTEX2020)

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Esteban Currás on behalf of the RD50 Collaboration

CERN, Organisation europénne pour la recherche nucléaire, CH-1211 Genève 23, Switzerland

Received December 11, 2020

For the High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC), the collider will reach a peak instantaneous luminosity of 5 × 10³⁴ cm⁻² s⁻¹, with a total integrated luminosity of ∼3000 fb⁻¹ after around 12 years of expected lifetime. The pile-up during the p⁺p⁺ collisions is expected to reach values of ∼200 and the experiments are expected to be exposed to radiation levels up to 1.6 × 10¹⁶ n_eq cm⁻² at the innermost layers of the detectors. Moreover, in future proposal colliders, like for example FCC-hh, the pile-up is expected to be a factor of five higher while the radiation levels will increase by a factor of ten with respect to the HL-LHC.

Under this scenario, in the framework of ATLAS, CMS, RD50 and other sensor R&D projects, radiation tolerant silicon sensors for timing and tracking applications are being developed. Giving the expected radiation levels and the demanding spatial resolution plus timing capabilities required, one important line of research is focused on silicon sensors with intrinsic charge gain: Low Gain Avalanche Detectors (LGADs).

This paper aims to give an overview of the current status of this technology. The most interesting approaches for future 4-dimensional tracking applications based on the LGAD technology will be presented here. In addition, the latest results on the performance after irradiation of standard LGADs will be reviewed too.

The Author(s)

This article is published by the Physical Society of Japan under the terms of the Creative Commons Attribution 4.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the article, journal citation, and DOI.

https://doi.org/10.7566/JPSCP.34.010015

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