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
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引用次数: 1
摘要
iXRD是沙迦- sat -1的主要科学有效载荷，沙迦- sat -1是一颗3U立方体卫星，预计将于2022年第四季度发射。它的主要科学目标是监测20 - 200kev波段的明亮硬x射线源和瞬态。iXRD由一个CdZnTe晶体(面积6.45平方厘米，厚度5毫米)、一个开口角为4.26°的方孔钨准直器、读出和控制电子器件及供电电路、后屏蔽和机械结构组成。iXRD的一些设计元素继承了BeEagleSat上的XRD，在收集面积、x射线背景和电子噪声方面有了显着改进。在本文中，从机械、电子、控制软件和数据处理方面详细讨论了iXRD的设计。其预期性能由地面标定后确定。根据像素大小，能量分辨率在60 keV时为4 - 7 keV，最小可探测能量为19 - 23 keV。
The Improved X-ray Detector (iXRD) on Sharjah-Sat-1, design principles, tests and ground calibration
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.
期刊介绍：
Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments.
Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields.
Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.
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