3D reconstruction of particle tracks in a 2 mm thick CdTe hybrid pixel detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F19%3A00330722" target="_blank" >RIV/68407700:21670/19:00330722 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1140/epjc/s10052-019-6673-z" target="_blank" >https://doi.org/10.1140/epjc/s10052-019-6673-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-019-6673-z" target="_blank" >10.1140/epjc/s10052-019-6673-z</a>

Result language
angličtina
Original language name
3D reconstruction of particle tracks in a 2 mm thick CdTe hybrid pixel detector
Original language description
We demonstrate how the latest generation of hybrid pixel detectors of the Timepix family can be used to reconstruct 3 dimensional particle tracks on a microscopic scale, additionally determining the stopping power along the particles' paths. In an experiment, a Timepix3 detector with a 2mm thick planar CdTe sensor was irradiated in a 40GeV/c pion beam and used in a similar way to a time-projection chamber: The coordinates x and y were given by the trajectory projection (pixel pitch: 55µm), the z-coordinate was reconstructed from the charge carrier drift time measurement (time binning: 1.5625ns). The achievable z-resolution was studied at different bias voltages. Systematic inaccuracies due to an imprecise drift time model were determined and separated from the intrinsic uncertainty given by the time resolution. It was shown that a z-resolution of m could be achieved by a perfect modeling of the drift time. With the presented z-reconstruction methodology, we studied the charge collection efficiency as a function of interaction depth, which was then used to apply a charge loss correction to the per-pixel energy measurements. 3D event displays of pion, muon and electron tracks are shown.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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