Evaluation of Timepix3 with a 1 mm thick silicon sensor as a Compton imaging polarimeter in the hard X-ray band

被引：0
作者：
Jelinek, Jindrich [1 ,2 ]
Bergmann, Benedikt [1 ]
Smolyanskiy, Petr [1 ]
机构：
[1] Czech Tech Univ, Inst Expt & Appl Phys, Husova 5, Prague, Czech Republic
[2] Univ Geneva, Dept Nucl & Particle Phys, 24 Quai Ernest Ansermet, CH-1205 Geneva, Switzerland
来源：
JOURNAL OF INSTRUMENTATION | 2025年 / 20卷 / 02期
关键词：
Polarimeters; Compton imaging; Hybrid detectors; X-ray detectors; RECONSTRUCTION; PERFORMANCE; EMISSION; CRAB;
D O I：
10.1088/1748-0221/20/02/C02006
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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 mu A). Photons scattered in the target at 90 degrees 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 mu (100) > 77 % in energy range of 45-80 keV. The efficiency of detection has a maximum above 0.13 % at 45-50 keV. 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 degrees was achieved.
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页数：16
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