Scintillator Pixel Detectors for Measurement of Compton Scattering
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 scat...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
|
| Series: | Condensed Matter |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2410-3896/4/1/24 |
| _version_ | 1817992406292758528 |
|---|---|
| author | Mihael Makek Damir Bosnar Luka Pavelić |
| author_facet | Mihael Makek Damir Bosnar Luka Pavelić |
| author_sort | Mihael Makek |
| collection | DOAJ |
| description | 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 <inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>22</mn> </msup> </semantics> </math> </inline-formula>Na 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 <inline-formula> <math display="inline"> <semantics> <mrow> <mn>0.56</mn> <mo>±</mo> <mn>0.02</mn> </mrow> </semantics> </math> </inline-formula> ns between the two modules. |
| first_indexed | 2024-04-14T01:25:52Z |
| format | Article |
| id | doaj.art-e98176165e0048ad8c993543a1f86e2d |
| institution | Directory Open Access Journal |
| issn | 2410-3896 |
| language | English |
| last_indexed | 2024-04-14T01:25:52Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Condensed Matter |
| spelling | doaj.art-e98176165e0048ad8c993543a1f86e2d2022-12-22T02:20:28ZengMDPI AGCondensed Matter2410-38962019-02-01412410.3390/condmat4010024condmat4010024Scintillator Pixel Detectors for Measurement of Compton ScatteringMihael Makek0Damir Bosnar1Luka Pavelić2Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, CroatiaDepartment of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, CroatiaDepartment of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, CroatiaThe 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 <inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>22</mn> </msup> </semantics> </math> </inline-formula>Na 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 <inline-formula> <math display="inline"> <semantics> <mrow> <mn>0.56</mn> <mo>±</mo> <mn>0.02</mn> </mrow> </semantics> </math> </inline-formula> ns between the two modules.https://www.mdpi.com/2410-3896/4/1/24Compton camerapositron emission tomographyCompton scatteringscintillation detectorsilicon photomultipliermedical applications |
| spellingShingle | Mihael Makek Damir Bosnar Luka Pavelić Scintillator Pixel Detectors for Measurement of Compton Scattering Condensed Matter Compton camera positron emission tomography Compton scattering scintillation detector silicon photomultiplier medical applications |
| title | Scintillator Pixel Detectors for Measurement of Compton Scattering |
| title_full | Scintillator Pixel Detectors for Measurement of Compton Scattering |
| title_fullStr | Scintillator Pixel Detectors for Measurement of Compton Scattering |
| title_full_unstemmed | Scintillator Pixel Detectors for Measurement of Compton Scattering |
| title_short | Scintillator Pixel Detectors for Measurement of Compton Scattering |
| title_sort | scintillator pixel detectors for measurement of compton scattering |
| topic | Compton camera positron emission tomography Compton scattering scintillation detector silicon photomultiplier medical applications |
| url | https://www.mdpi.com/2410-3896/4/1/24 |
| work_keys_str_mv | AT mihaelmakek scintillatorpixeldetectorsformeasurementofcomptonscattering AT damirbosnar scintillatorpixeldetectorsformeasurementofcomptonscattering AT lukapavelic scintillatorpixeldetectorsformeasurementofcomptonscattering |