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R&D – Fast detectors

Local Team:  Francesca Carnesecchi, Daniele Cavazza, Anselmo Margotti, Rosario Nania, Gilda Scioli

Purpose: The aim of this Research and Development (R&D) is to measure the very moment when a particle travels through the detector  with cuttin-edge resolution, in the order of tens of ps. Such a time resolution could help in several fields, from particle  (PID, Calorimetry) to medical (TOF-PET) Physics; even more, a precise time measurement will become necessary for the next generation of colliders in high energy physics (like HL-LHC and FCC) to deal with unprecedented number of interactions for each beam collision.

Local Activity: This activity has already begun thanks to the ALICE project, with the study of MRPC (Multigap Resistive Plate Chamber) gas detectors and is going on both with a further study of these detectors and by moving towards the study of ultra-fast silicon detectors. In particular, both silicon photodetectors SiPM (Silicon PhotoMultiplier) (since 2012), coupled with plastic scintillators, and UFSD (Ultra Fast Silicon Detector) detectors (since 2015), based on LGAD (Low Gain Avalanche Detector) technology, are under investigation. The activity is based on a complete characterization of the detector under study and on the subsequent analysis of the time limits that can be reached (via lasers, cosmic rays and tests using accelerator beams).

+ MRPC
Timing performance study of Multigap Resistive Plate Chamber with different gap size, NIMA, 2019

20 gas gaps Multigap Resistive Plate Chamber: Improved rate capability with excellent time resolution,NIMA, 2018

Recent R&D to improve the time resolution and rate capability of the Multigap Resistive Plate Chamber, Nuovo Cimento C, 2017


+ SiPM

Experimental study of the time resolution of SiPM coupled to scintillator, NIMA, 2020

Time resolution measurements with SiPMs coupled to a scintillator, JINST, 2018


+ UFSD

Development of ultra fast silicon detector for 4D tracking, NIMA, 2019