Performance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation camera

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F18%3A00337156" target="_blank" >RIV/68407700:21670/18:00337156 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/8544509" target="_blank" >https://ieeexplore.ieee.org/document/8544509</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ASDAM.2018.8544509" target="_blank" >10.1109/ASDAM.2018.8544509</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation camera

Popis výsledku v původním jazyce

Prototype bulk semi-insulating GaAs sensors were connected to the Timepix readout chip and their performance was examined. Overall, three sensors with pixel pitch of 55 mu m, 165 mu m and 220 mu m were tested. Firstly, open beam illumination responses were obtained on which typical patterns of detection efficiency inhomogeneities appear, however, the patterns are, to large extend, removable by post processing corrections. Secondly, sensors were able to retrieve images of biological and technical samples of high quality with spatial resolution of 8.7 lp/mm (55 mu m pitch), 2.7 lp/mm (165 mu m pitch) and 2.0 lp/mm (220 mu m pitch). Also, 55 mu m, 165 mu m pitch sensors were able to perform spectrometric measurement. Energy resolution of 55 mu m pitch sensor is 5 % at 59.5 keV and 10% at 160.6 keV in case of 165 mu m pitch sensor.

Název v anglickém jazyce

Performance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation camera

Popis výsledku anglicky

Prototype bulk semi-insulating GaAs sensors were connected to the Timepix readout chip and their performance was examined. Overall, three sensors with pixel pitch of 55 mu m, 165 mu m and 220 mu m were tested. Firstly, open beam illumination responses were obtained on which typical patterns of detection efficiency inhomogeneities appear, however, the patterns are, to large extend, removable by post processing corrections. Secondly, sensors were able to retrieve images of biological and technical samples of high quality with spatial resolution of 8.7 lp/mm (55 mu m pitch), 2.7 lp/mm (165 mu m pitch) and 2.0 lp/mm (220 mu m pitch). Also, 55 mu m, 165 mu m pitch sensors were able to perform spectrometric measurement. Energy resolution of 55 mu m pitch sensor is 5 % at 59.5 keV and 10% at 160.6 keV in case of 165 mu m pitch sensor.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Advanced Semiconductor Devices and Microsystems. International Conference. 12th 2018. (ASDAM 2018)

ISBN

978-1-5386-7490-1

ISSN

2475-2916

e-ISSN

—

Počet stran výsledku

4

Strana od-do

121-124

Název nakladatele

American Institute of Physics and Magnetic Society of the IEEE

Místo vydání

San Francisco

Místo konání akce

Smolenice

Datum konání akce

21. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000468753600027