The improved x-ray detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration

Kalemci, Emrah and Altıngün, Ali Mürteza and Bozkurt, Ayhan and Aslan, Alim Rüstem and Yalçın, Refik and Gökalp, Kaya and Veziroğlu, Nezih Kaan and Fernini, Ilias and Manousakis, Antonios and Yaşar, Ali and Diba, Milad and Karabulut, Boğaç and Çatal, Egemen and Öztekin, Onur (2023) The improved x-ray detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration. Experimental Astronomy, 56 (1). pp. 99-116. ISSN 0922-6435 (Print) 1572-9508 (Online)

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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.
Item Type: Article
Uncontrolled Keywords: CdZnTe detectors; CubeSats; High energy astrophysics; X-ray detectors
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Emrah Kalemci
Date Deposited: 07 Sep 2023 16:46
Last Modified: 07 Sep 2023 16:46

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