Detector response and performance of a 500 μm thick GaAs attached to Timepix3 in relativistic particle beams

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F20%3A43960199" target="_blank" >RIV/49777513:23220/20:43960199 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1748-0221/15/03/C03013/meta" target="_blank" >https://iopscience.iop.org/article/10.1088/1748-0221/15/03/C03013/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/15/03/C03013" target="_blank" >10.1088/1748-0221/15/03/C03013</a>

Result language
angličtina
Original language name
Detector response and performance of a 500 μm thick GaAs attached to Timepix3 in relativistic particle beams
Original language description
The performance and response of a Timepix3 detector with a 500 μm thick GaAs:Cr sensor layer was investigated in different radiation fields. The sensor resistivity was ρ 109 Ω cm. Fitting different modified Hecht functions, which take the small pixel effect into account, the mobility-lifetime products of μeτe = (0.773 ± 0.018) × 10-4 cm2V-1 and μeτe = (0.996 ± 0.056) × 10-4 cm2V-1 were determined. Hereby, the latter value is favored due to the better agreement of fit and data. In a measurement in a 40 GeV/c pion beam, the drift times and charge collection efficiencies were studied as a function of the interaction depth. We present the measured drift velocity as a function of the electric field strength and compare the determined dependence with a model. In a measurement in a mixed ion beam, we study the capability of the detector to separate different ion species. We show the detector response in the form of tracks and discuss heavy ion track features. © 2020 IOP Publishing Ltd and Sissa Medialab.
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
—
OECD FORD branch
20201 - Electrical and electronic engineering

Project
<a href="/en/project/EF16_019%2F0000766" target="_blank" >EF16_019/0000766: Engineering applications of microworld physics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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