Evaluation of Timepix3 with a 1 mm thick silicon sensor as a Compton imaging polarimeter in the hard X-ray band
- NázevTitle
- Evaluation of Timepix3 with a 1 mm thick silicon sensor as a Compton imaging polarimeter in the hard X-ray bandEvaluation of Timepix3 with a 1 mm thick silicon sensor as a Compton imaging polarimeter in the hard X-ray band
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- J. Jelínek, B. Bergmann, P. Smolyanskiy
- DOIDOI
- 10.1088/1748-0221/20/02/C02006
- Časopis / citaceJournal / citation
- Journal of Instrumentation. 2025, 20(2), ISSN 1748-0221.
- RokYear
- 2025
- JazykLanguage
- eng
- WoSWoS
- 001435423800001
- ScopusScopus
- 2-s2.0-85217087594
- RIVRIV
- RIV/68407700:21670/25:00380912!RIV26-GA0-21670___
- ProjektProject
- Identifikace částic v experimentech fysiky vysokych energií a ve vesmíru s pokročilými detekčními systémyParticle identification in high-energy physics experiments and space with advanced detection systems
AbstraktAbstract
The present work demonstrates the usage of a Timepix3 with a 1 mm thick silicon sensor as a scattering polarimeter with simultaneous Compton-camera imaging. For this purpose, laboratory experiments were designed where the detector was placed at different scattering angles with respect to a plastic target that is irradiated with X-rays from a Hamamatsu microfocus tube (tube voltage 75 kV, tube current 60 µA). Photons scattered in the target at 90∘ are almost 100 % linearly polarized. Measurements in an energy range of 32.5–67.5 keV showed modulation factors above 70 %. Simulations of 100 % linearly polarized beams showed modulation factors μ_100 > 77 % in an energy range of 45–80 keV. The efficiency of detection has a maximum above 0.13 % at 45–50 keV. We implemented the origin ensemble with resolution recovery (OE-RR) algorithm for Compton camera imaging. The full width at half maximum (FWHM) of the image of 16–21∘ was achieved.
The present work demonstrates the usage of a Timepix3 with a 1 mm thick silicon sensor as a scattering polarimeter with simultaneous Compton-camera imaging. For this purpose, laboratory experiments were designed where the detector was placed at different scattering angles with respect to a plastic target that is irradiated with X-rays from a Hamamatsu microfocus tube (tube voltage 75 kV, tube current 60 µA). Photons scattered in the target at 90∘ are almost 100 % linearly polarized. Measurements in an energy range of 32.5–67.5 keV showed modulation factors above 70 %. Simulations of 100 % linearly polarized beams showed modulation factors μ_100 > 77 % in an energy range of 45–80 keV. The efficiency of detection has a maximum above 0.13 % at 45–50 keV. We implemented the origin ensemble with resolution recovery (OE-RR) algorithm for Compton camera imaging. The full width at half maximum (FWHM) of the image of 16–21∘ was achieved.