The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration

Emrah Kalemci; Ali M. Altıngün; Ayhan Bozkurt; Alim Rüstem Aslan; Refik Yalçın; Kaya Gökalp; Kaan Veziroğlu; Ilias Fernini; Antonios Manousakis; Ali Yaşar; Milad Diba; Boğaç Karabulut; Egemen Çatal; Onur Öztekin

doi:10.1007/s10686-023-09890-z

The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration

Emrah Kalemci^*, Ali M. Altıngün^*, Ayhan Bozkurt, Alim Rüstem Aslan, Refik Yalçın, Kaya Gökalp, Kaan Veziroğlu, Ilias Fernini, Antonios Manousakis, Ali Yaşar, Milad Diba, Boğaç Karabulut, Egemen Çatal, Onur Öztekin

^*Corresponding author for this work

Department of Astronautical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The iXRD is the primary science payload on Sharjah-Sat-1, a 3U CubeSat expected to be launched in Q4, 2022. Its main scientific goal is monitoring bright hard X-ray sources and transients in 20 - 200 keV band. The iXRD consists of a CdZnTe crystal (6.45 cm² area, 5 mm thickness), a Tungsten collimator with square holes with an opening angle of 4.26^∘, readout and control electronics and power supply circuitry, a back-shield and mechanical structures. Some of the design elements of iXRD have been inherited from the XRD on BeEagleSat with significant improvements in terms of collecting area, X-ray background and electronic noise. In this article, the design of the iXRD is discussed in detail taking into account mechanical, electronic, control software and data handling aspects. Its expected performance is determined after ground calibration. Depending on the pixel size, the energy resolution is 4 - 7 keV at 60 keV and the minimum detectable energy is 19 - 23 keV.

Original language	English
Pages (from-to)	99-116
Number of pages	18
Journal	Experimental Astronomy
Volume	56
Issue number	1
DOIs	https://doi.org/10.1007/s10686-023-09890-z
Publication status	Published - Aug 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature B.V.

Funding

BlackCAT is a 6U mission, and one of its scientific objectives, detecting and studying black holes in outburst, is similar to the main objective of Sharjah-Sat-1. BlackCAT has a wide field of view [] through a coded mask, and uses Hybrid CMOS X-ray detectors operating in the 1-20 keV band. BlackCat is being funded by a NASA APRA grant and is expected to be launched in 2024. The development of iXRD has been supported by University of Sharjah, Sabancı University and Tübitak Project 116F151. The authors thank Süleyman Çelik at SUNUM, Sabanci University for critical technical support in crystal attachment.

Funders	Funder number
National Aeronautics and Space Administration
University of Sharjah
Sabancı Üniversitesi	116F151

Keywords

CdZnTe detectors
CubeSats
High energy astrophysics
X-ray detectors

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10.1007/s10686-023-09890-z

Cite this

Kalemci, E., Altıngün, A. M., Bozkurt, A., Aslan, A. R., Yalçın, R., Gökalp, K., Veziroğlu, K., Fernini, I., Manousakis, A., Yaşar, A., Diba, M., Karabulut, B., Çatal, E., & Öztekin, O. (2023). The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration. Experimental Astronomy, 56(1), 99-116. https://doi.org/10.1007/s10686-023-09890-z

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doi = "10.1007/s10686-023-09890-z",

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Kalemci, E, Altıngün, AM, Bozkurt, A, Aslan, AR, Yalçın, R, Gökalp, K, Veziroğlu, K, Fernini, I, Manousakis, A, Yaşar, A, Diba, M, Karabulut, B, Çatal, E & Öztekin, O 2023, 'The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration', Experimental Astronomy, vol. 56, no. 1, pp. 99-116. https://doi.org/10.1007/s10686-023-09890-z

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AU - Kalemci, Emrah

AU - Altıngün, Ali M.

AU - Bozkurt, Ayhan

AU - Aslan, Alim Rüstem

AU - Yalçın, Refik

AU - Gökalp, Kaya

AU - Veziroğlu, Kaan

AU - Fernini, Ilias

AU - Manousakis, Antonios

AU - Yaşar, Ali

AU - Diba, Milad

AU - Karabulut, Boğaç

AU - Çatal, Egemen

AU - Öztekin, Onur

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AB - The iXRD is the primary science payload on Sharjah-Sat-1, a 3U CubeSat expected to be launched in Q4, 2022. Its main scientific goal is monitoring bright hard X-ray sources and transients in 20 - 200 keV band. The iXRD consists of a CdZnTe crystal (6.45 cm2 area, 5 mm thickness), a Tungsten collimator with square holes with an opening angle of 4.26∘, readout and control electronics and power supply circuitry, a back-shield and mechanical structures. Some of the design elements of iXRD have been inherited from the XRD on BeEagleSat with significant improvements in terms of collecting area, X-ray background and electronic noise. In this article, the design of the iXRD is discussed in detail taking into account mechanical, electronic, control software and data handling aspects. Its expected performance is determined after ground calibration. Depending on the pixel size, the energy resolution is 4 - 7 keV at 60 keV and the minimum detectable energy is 19 - 23 keV.

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The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration

Abstract

Bibliographical note

Funding

Keywords

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