Scintillator Pixel Detectors for Measurement of Compton Scattering

Znanstveni rad - Izvorni znanstveni rad

• Autor: Mihael Makek; MBZ: 256122
• Autor: Damir Bosnar; MBZ: 134936
• Autor: Luka Pavelić; MBZ: 362460
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The Compton scattering of gamma rays is commonly detected using two detector layers, the first for detection of the recoil electron and the second for the scattered gamma. We have assembled detector modules consisting of scintillation pixels, which are able to detect and reconstruct the Compton scattering of gammas with only one readout layer. This substantially reduces the number of electronic channels and opens the possibility to construct cost-efficient Compton scattering detectors for various applications such as medical imaging, environment monitoring, or fundamental research. A module consists of a 4 × 4 matrix of lutetium fine silicate scintillators and is read out by a matching silicon photomultiplier array. Two modules have been tested with a 22Na source in coincidence mode, and the performance in the detection of 511 keV gamma Compton scattering has been evaluated. The results show that Compton events can be clearly distinguished with a mean energy resolution of 12.2% ± 0.7% in a module and a coincidence time resolution of 0.56±0.02 ns between the two modules.

• Ključne riječi (engleski): Compton camera; positron emission tomography; Compton scattering; scintillation detector; silicon photomultiplier; medical applications
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Condensed Matter
• Brojčani podaci: vol. 4, br. 1, 24
• p-ISSN: 2410-3896
• DOI: https://doi.org/10.3390/condmat4010024
• URN:NBN: urn:nbn:hr:217:761778
• Datum objave publikacije: 2019
• URL dokumenta: https://www.mdpi.com/2410-3896/4/1/24
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Received: 31 January 2019. Accepted: 13 February 2019. Published: 15 February 2019.
• Datum i vrijeme pohrane: 2020-08-12 10:03:28