Study of a GaAs:Cr-based Timepix Detector Using Synchrotron Facility Научная публикация
| Журнал |
Journal of Instrumentation
ISSN: 1748-0221 |
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| Вых. Данные | Год: 2017, Том: 12, Номер: 11, Номер статьи : P11009, Страниц : 13 DOI: 10.1088/1748-0221/12/11/p11009 | ||||||||
| Ключевые слова | Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc); Hybrid detectors; Materials for solid-state detectors; X-ray detectors | ||||||||
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Реферат:
High resistivity gallium arsenide compensated by chromium fabricated by Tomsk State University has demonstrated a good suitability as a sensor material for hybrid pixel detectors used in X-ray imaging systems with photon energies up to 60 keV. The material is available with a thickness up to 1 mm and due to its Z number a high absorption efficiency in this energy region is provided. However, the performance of thick GaAs:Cr-based detectors in spectroscopic applications is limited by readout electronics with relatively small pixels due to the charge sharing effect. In this paper, we present the experimental investigation of the charge sharing effect contribution in the GaAs:Cr-based Timepix detector. By means of scanning the detector with a pencil photon beam generated by the synchrotron facility, the geometrical mapping of pixel sensitivity is obtained, as well as the energy resolution of a single pixel. The experimental results are supported by numerical simulations. The observed limitation of the GaAs:Cr-based Timepix detector for the high flux X-ray imaging is discussed. © 2017 IOP Publishing Ltd and Sissa Medialab.
Библиографическая ссылка:
Smolyanskiy P.
, Kozhevnikov D.
, Bakina O.
, Chelkov G.
, Dedovich D.
, Kuper K.
, Fabelo A.L.
, Zhemchugov A.
Study of a GaAs:Cr-based Timepix Detector Using Synchrotron Facility
Journal of Instrumentation. 2017. V.12. N11. P11009 :1-13. DOI: 10.1088/1748-0221/12/11/p11009 WOS Scopus РИНЦ CAPlus OpenAlex
Study of a GaAs:Cr-based Timepix Detector Using Synchrotron Facility
Journal of Instrumentation. 2017. V.12. N11. P11009 :1-13. DOI: 10.1088/1748-0221/12/11/p11009 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 14 июл. 2017 г. |
| Принята к публикации: | 27 окт. 2017 г. |
| Опубликована в печати: | 10 нояб. 2017 г. |
| Опубликована online: | 10 нояб. 2017 г. |
Идентификаторы БД:
| Web of science: | WOS:000415822400002 |
| Scopus: | 2-s2.0-85038558467 |
| РИНЦ: | 35481166 |
| Chemical Abstracts: | 2018:2144970 |
| OpenAlex: | W2767792835 |