Performance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation camera
- NázevTitle
- Performance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation cameraPerformance of bulk semi-insulating GaAs-based sensors with different pixel sizes for Timepix radiation camera
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- D. Kubanda, B. Zat'ko, J. Žemlička, A. Sagatova
- Klíčová slovaKeywords
- SENSOR, Image sensors, Spatial resolution, Gallium arsenide, Lighting, Silicon
- KonferenceConference
- Advanced Semiconductor Devices and Microsystems. International Conference. 12th 2018. (ASDAM 2018) (Smolenice, 2018-10-21)
- DOIDOI
- 10.1109/ASDAM.2018.8544509
- Časopis / citaceJournal / citation
- In: 2018 12th International Conference on Advanced Semiconductor Devices and Microsystems (ASDAM), IEEE, 2018, pp. 1-4 · ISSN 2475-2916
- RokYear
- 2018
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
- CitovánoCited by
- 1 (OpenAlex)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
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.
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.