Sep 12 – 17, 2021
University of Birmingham
Europe/London timezone

First results from thin silicon sensors irradiated to extreme fluence

Sep 17, 2021, 12:10 PM
Teaching and Learning Building (University of Birmingham)

Teaching and Learning Building

University of Birmingham

Edgbaston Campus University of Birmingham B15 2TT UK
talk Detectors for High Radiation and Extreme Environments Detectors for High Radiation and Extreme Environments


Valentina Sola (Universita e INFN Torino (IT))


In this contribution, we present a new development of radiation-resistant silicon sensors produced by the Fondazione Bruno Kessler (FBK, Italy). The design of the sensors exploits the recently observed saturation of radiation damage effects on silicon, together with the usage of thin substrates, intrinsically less affected by radiation. To cope with the small signal coming from thin sensors, the internal multiplication of the charge carriers will be used. At FBK, Low-Gain Avalanche Diodes (LGADs) have been produced on 25 and 35 $\mu$m thick p-type epitaxial substrates: when new, the signal multiplication will occur due to the gain layer typical of the LGAD design; after irradiation, the loss of gain resulting by the deactivation of the gain layer atoms will be compensated by the increase of the operating bias. The goal is to prove that the new sensors can efficiently operate up to fluences of 1E17 1MeV neutron equivalent/cm$^2$.

Institute INFN Torino
Nationality Italian
Title Dr
Your name Valentina Sola

Primary author

Valentina Sola (Universita e INFN Torino (IT))


Arianna Morozzi (INFN, Perugia (IT)) Daniele Passeri (Universita e INFN Perugia (IT)) Federico Siviero (Universita e INFN Torino (IT)) Francesco Moscatelli (IOM-CNR and INFN, Perugia (IT)) Giacomo Borghi (Fondazione Bruno Kessler) Giovanni Paternoster (Fondazione Bruno KEssler) Ms Giulia Gioachin (Università degli Studi di Torino (IT)) Luca Menzio (Universita e INFN Torino (IT)) Marco Ferrero (Universita e INFN Torino (IT)) Marco Mandurrino (INFN) Marta Tornago (Universita e INFN Torino (IT)) Matteo Centis Vignali (FBK) Maurizio Boscardin (FBK Trento) Nicolo Cartiglia (INFN Torino (IT)) Patrick Asenov (Universita e INFN, Perugia (IT)) Roberta Arcidiacono (Universita e INFN Torino (IT)) Simona Giordanengo (Istituto Nazionale di Fisica Nucleare) Tommaso Croci (INFN - National Institute for Nuclear Physics)

Presentation materials