Feb 21 – 25, 2022
Vienna University of Technology
Europe/Vienna timezone

First experimental results of the spatial resolution of RSD pad arrays read out with the FAST2 full custom 16-ch ASIC

Feb 25, 2022, 12:20 PM
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Live Presentation Semiconductor Detectors Semiconductor Detectors


Federico Siviero (Universita e INFN Torino (IT))


Resistive Silicon Detectors (RSD, also known as AC-LGAD) are innovative silicon sensors based on the LGAD technology, characterized by a continuous gain layer and by an internal signal-sharing mechanism.

RSDs are very promising tracking detectors that combine large pitch and extremely accurate position reconstruction: the most recent results show a spatial resolution of 2 μm for a sensor with 100 μm pixels. Such accuracy is achieved by combining the internal sharing mechanism of RSD with a reconstruction method based on a neural network.

This talk will present the first experimental results obtained from RSD arrays read out with a dedicated ASIC (FAST2), tailored to fast signals. The ASIC output is connected to a 16-ch digitizer, allowing simultaneously recording all the detector channels. All tested sensors are 3x3 or 4x4 arrays with different pitch sizes, coming from the RSD1, RSD2 productions manufactured at Fondazione Bruno Kessler (FBK, Italy).

Primary author

Federico Siviero (Universita e INFN Torino (IT))


Amedeo Staiano (Universita e INFN Torino (IT)) Roberta Arcidiacono (Universita e INFN Torino (IT)) Nicolo Cartiglia (INFN Torino (IT)) Marco Ferrero (Universita e INFN Torino (IT)) Marco Mandurrino (INFN) Luca Menzio (Universita e INFN Torino (IT)) Valentina Sola (Universita e INFN Torino (IT)) Marta Tornago marco costa (University of Torino)

Presentation materials