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First tests of Timepix detectors based on semi-insulating GaAs matrix of different pixel size

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F18%3A00319853" target="_blank" >RIV/68407700:21670/18:00319853 - isvavai.cz</a>

  • Result on the web

    <a href="http://iopscience.iop.org/article/10.1088/1748-0221/13/02/C02013/" target="_blank" >http://iopscience.iop.org/article/10.1088/1748-0221/13/02/C02013/</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1748-0221/13/02/C02013" target="_blank" >10.1088/1748-0221/13/02/C02013</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    First tests of Timepix detectors based on semi-insulating GaAs matrix of different pixel size

  • Original language description

    In this work, we have focused on Timepix detectors coupled with the semi-insulating GaAs material sensor. We used undoped bulk GaAs material with the thickness of 350 mu m. We prepared and tested four pixelated detectors with 165 mu m and 220 mu m pixel size with two versions of technology preparation, without and with wet chemically etched trenches around each pixel. We have carried out adjustment of GaAs Timepix detectors to optimize their performance. The energy calibration of one GaAs Timepix detector in Time-over-threshold mode was performed with the use of Am-241 and Ba-133 radioisotopes. We were able to detect gamma-photons with the energy up to 160 keV. The X-ray imaging quality of GaAs Timepix detector was tested with X-ray source using various samples. After flat field we obtained very promising imaging performance of tested GaAs Timepix detectors.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10300 - Physical sciences

Result continuities

  • Project

    <a href="/en/project/EF16_013%2F0001785" target="_blank" >EF16_013/0001785: Van de Graaff Accelerator - a Tunable Source of Monoenergetic Neutrons and Light Ions</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Instrumentation

  • ISSN

    1748-0221

  • e-ISSN

    1748-0221

  • Volume of the periodical

    13

  • Issue of the periodical within the volume

    February

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    10

  • Pages from-to

  • UT code for WoS article

    000424627200003

  • EID of the result in the Scopus database

    2-s2.0-85043477632