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T: Fachverband Teilchenphysik

T 41: Calorimeters 1

T 41.2: Vortrag

Dienstag, 22. März 2022, 16:30–16:45, T-H26

Exploring the intrinsic Time Resolution of the SiPM-on-Tile Technology — •Fabian Hummer, Lorenz Emberger, and Frank Simon for the CALICE-D collaboration — Max-Planck-Institut für Physik

The SiPM-on-Tile technology, where small plastic scintillator tiles are directly read out with SiPMs, has been developed for the CALICE Analog Hadron Calorimeter (AHCAL), and has been adopted for parts of the hadronic section of the CMS HGCAL. For future electron-positron colliders, a single cell time stamping on the sub-nanosecond level for energy deposits corresponding to single minimum-ionizing particles is desired to provide background rejection and to support pattern recognition and energy reconstruction with particle flow algorithms. To better understand the intrinsic time resolution achievable with the SiPM-on-Tile technology, detailed measurements have been performed in test beams at DESY, probing different scintillator tile sizes and materials. The study is complemented by laser measurements that provide insights into processes within the scintillator tile relevant for timing. Geant4 simulations allow us to verify our results and to find the correlations between scintillator tile size, light yield and time resolution. In this contribution, we will discuss our measurement methods, the results of our SiPM-on-Tile timing study and the implementation and performance in simulations.