Optimization of Timepix3-based conventional Compton camera using electron track algorithm

The hybrid pixel detector Timepix3 allows the measurement of the time and energy deposition of an event simultaneously in each 55 \(\mu\)m pixel, which makes Timepix3 a promising approach for a compact Compton camera. However, the angular resolution of Compton camera based on this kind of detector w...

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Bibliographic Details
Published inarXiv.org
Main Authors Wen, Jiaxing, Zheng, Xutao, Gao, Huaizhong, Zeng, Ming, Zhang, Yuge, Yu, Minghai, Wu, Yuchi, Cang, Jirong, Ma, Ge, Zhao, Zongqing
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 20.12.2021
Subjects
Algorithms
Angular resolution
Cameras
Electrons
Optimization
Photoelectrons
Physics - Instrumentation and Detectors
Physics - Nuclear Experiment
Pixels
Position measurement
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Summary:The hybrid pixel detector Timepix3 allows the measurement of the time and energy deposition of an event simultaneously in each 55 \(\mu\)m pixel, which makes Timepix3 a promising approach for a compact Compton camera. However, the angular resolution of Compton camera based on this kind of detector with high pixel density is usually degraded in imaging of MeV gamma-ray sources, because the diffusion of energetic Compton electron or photoelectron could trigger many pixels and lead to an inaccurate measurement of interaction position. In this study, an electron track algorithm is used to reconstruct the electron track and determine the interaction point. An demonstrative experiment was carried out, showing that the effect of this algorithm was significant. The angular resolution measures of a single layer Compton camera based on Timepix3 was enhanced to 12 degrees (FWHM) in imaging of a Co-60 gamma source.
ISSN:2331-8422
DOI:10.48550/arxiv.2105.13254