Evaluation of coincidence time resolution in a liquid xenon detector with silicon photomultipliers

This work explores the combination of liquid xenon as a scintillating medium and silicon photomultipliers as a readout in Positron Emission Tomography (PET) for enhanced Time-Of-Flight resolution. We present the results of our first prototype optimized to maximize light collection using high photode...

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Main Authors: N. Salor-Iguiñiz, J. M. Benlloch-Rodríguez, R. Esteve, V. Álvarez, F. Ballester, R. Gadea, J. Rodríguez, J. F. Toledo, R. Torres-Curado, V. Herrero, C. Romo-Luque, M. Querol, J. Rodríguez-Ponce, S. Teruel-Pardo, R. J. Aliaga, F. Monrabal, P. Ferrario, J. J. Gómez-Cadenas, M. Rappaport
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/vy9h-twqf
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Summary:This work explores the combination of liquid xenon as a scintillating medium and silicon photomultipliers as a readout in Positron Emission Tomography (PET) for enhanced Time-Of-Flight resolution. We present the results of our first prototype optimized to maximize light collection using high photodetection efficiency (PDE), VUV-sensitive sensors and to minimize time fluctuations. We report a coincidence time resolution of 281±2 ps FWHM, obtained using a ^{22}Na calibration source. This result is competitive with the current state-of-the-art PET scanners and represents a significant step forward in the development of liquid xenon as a viable alternative to conventional scintillators in PET technology.
ISSN:2643-1564