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

TOPS: a new class of fast plastic scintillators

Feb 23, 2022, 4:50 PM
20m
Vienna University of Technology

Vienna University of Technology

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

Speakers

Michela Marafini Marco Toppi (INFN e Laboratori Nazionali di Frascati (IT))

Description

Organic plastic scintillators are largely exploited for fast time detectors thanks to their short scintillation time wrt inorganic crystals. Plastic scintillators are cheap to produce, light and easy to manipulate (standard mechanical workshop can handle the cutting, polishing, etc..). The nowadays best (faster) plastic scintillators are EJ-232 (Eljen Technology) and BC-422 (Saint Gobain) with a rise time of 350 ps, a decay time of 1.6 ns and a pulse width of 1.3 ns. To improve the performances of time detectors the development of faster scintillators can give a crucial contribution, in this framework a collaboration between the physics, engineering, and chemistry groups of University “Sapienza” of Rome and CREF started the TOPS project, focused on the development of a new class of organic scintillators. Comparing the light output and the time properties of the samples with minimum ionizing particles, a selection of the most promising TOPS scintillators has been investigated and characterized (redout with commercial PMTs - Hamamatsu H10721-20). The performance achieved with TOPS samples are extremely promising: a time resolution improvement from 10 up to 35% with respect to the EJ-232 commercial scintillator has been demonstrated. In addition, an increase of light output has been obtained for all samples with a consequent potential improvement in energy resolution measurements of a factor up to 35%.

Primary author

Co-authors

Daniele Carlotti (INFN - Sapienza) Angelica De Gregorio (INFN - National Institute for Nuclear Physics) Alessio Sarti (Sapienza Universita e INFN, Roma I (IT)) Adalberto Sciubba (INFN e Laboratori Nazionali di Frascati (IT)) Marco Toppi (INFN e Laboratori Nazionali di Frascati (IT)) Dr Patrizia De Maria (Sapienza University of Rome, Post-graduate School in Medical Physics, Department of Medico-Surgical Sciences and Biotechnologies, Rome, Italy) Micol De Simoni (Università di Roma "La Sapienza", Fisica, Rome, Italy) Marta Fischetti (INFN - National Institute for Nuclear Physics) Prof. Leonardo Mattiello (Sapienza University of Rome, Department of Basic and Applied Sciences for Engineering, Rome, Italy) Gaia Franciosini (INFN - National Institute for Nuclear Physics) Prof. Vincenzo Patera (Sapienza University of Rome, Department of Basic and Applied Sciences for Engineering, Rome, Italy) Angelo Schiavi (Università di Roma "La Sapienza") Mr Antonio Trigilio (Sapienza University of Rome, Department of Physics, Rome, Italy) Giacomo Traini Dr Daniele Rocco (Sapienza University of Rome, Department of Basic and Applied Sciences for Engineering, Rome, Italy)

Presentation materials