ÚTEFČVUT Ústav technické a experimentální fyziky ČVUT v PrazeInstitute of Experimental and Applied Physics, CTU in Prague

Probability distribution maps of deposited energy with sub-pixel resolution for Timepix3 detectors

NázevTitle
Probability distribution maps of deposited energy with sub-pixel resolution for Timepix3 detectorsProbability distribution maps of deposited energy with sub-pixel resolution for Timepix3 detectors
Druh výsledkuResult type
Článek v časopiseJournal article
AutořiAuthors
P. Christodoulou, J. Alozy, R. Ballabriga, M. Campbell, E. Heijne, L. Tlustos, J. Žemlička
Klíčová slovaKeywords
Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Hybrid detector, Interaction of radiation with matter, X-ray detector
KonferenceConference
24th international Workshop on Radiation Imaging Detectors (Oslo, Norway, 2023-06-25)
DOIDOI
10.1088/1748-0221/19/01/C01026
Časopis / citaceJournal / citation
Journal of Instrumentation 19(01), C01026 (2024) · ISSN 1748-0221
RokYear
2024
JazykLanguage
eng
ZáznamyRecords
ProjektProject
Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
CitovánoCited by
3 (INSPIRE-HEP)
2025: 12026: 2
Citace ke staženíDownload citation
TXT · BibTeX

AbstraktAbstract

The Medipix3 Collaboration has developed the Timepix3 chip, which can provide information about individual particles interacting with a hybrid pixelated semiconductor detector. The Timepix3 generates a data packet including time and energy information for each pixel receiving a charge above the discriminator threshold. From a set of such packages generated by one particle the total deposited energy and the sub -pixel center of mass (c.m) position of the interaction can be calculated. However, sub -threshold losses will distort both the measured energy and c.m calculation. This work aims to generate probability maps for the most probable initial interaction position and energy for a given detected cluster. The correction maps were calculated for different energies and sub -pixel c.m positions. It is crucial to realistically simulate the front-end response of the Timepix3 detector to be able to match and understand the experimental data and generate accurate probability maps. The correction maps from the simulations using the simulation tool All pix2 are applied to experimental data utilizing an Am -241 source to irradiate a Minipix Timepix3, leading to sub -pixel resolution and improved energy resolution for Timepix3 detectors.

The Medipix3 Collaboration has developed the Timepix3 chip, which can provide information about individual particles interacting with a hybrid pixelated semiconductor detector. The Timepix3 generates a data packet including time and energy information for each pixel receiving a charge above the discriminator threshold. From a set of such packages generated by one particle the total deposited energy and the sub -pixel center of mass (c.m) position of the interaction can be calculated. However, sub -threshold losses will distort both the measured energy and c.m calculation. This work aims to generate probability maps for the most probable initial interaction position and energy for a given detected cluster. The correction maps were calculated for different energies and sub -pixel c.m positions. It is crucial to realistically simulate the front-end response of the Timepix3 detector to be able to match and understand the experimental data and generate accurate probability maps. The correction maps from the simulations using the simulation tool All pix2 are applied to experimental data utilizing an Am -241 source to irradiate a Minipix Timepix3, leading to sub -pixel resolution and improved energy resolution for Timepix3 detectors.

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