Design and test results of scientific x-ray CMOS cameras

Wenxin Wang; Zhixing Ling; Chen Zhang; Qiong Wu; Zhenqing Jia; Xinyang Wang; Weimin Yuan; Shuang-Nan Zhang

doi:10.1117/12.2628842

29 August 2022 Design and test results of scientific x-ray CMOS cameras

Wenxin Wang, Zhixing Ling, Chen Zhang, Qiong Wu, Zhenqing Jia, Xinyang Wang, Weimin Yuan, Shuang-Nan Zhang

Proceedings Volume 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X; 121910L (2022) https://doi.org/10.1117/12.2628842
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

In recent years, scientific CMOS (sCMOS) sensors have found increasing applications to X-ray detection, including Xray astronomical observations. In order to examine the performance of sCMOS sensors, we have developed X-ray cameras based on sCMOS sensors. Two cameras, CNX22 and CNX 66, have been developed using sCMOS sensors with a photosensitive area of 2 cm × 2 cm and 6 cm × 6 cm, respectively. The designs of the cameras are presented in this paper. The CNX22 camera has a frame rate of 48 fps, whereas CNX66 has a frame rate of currently 20 fps, that can be boosted to 100 fps in the future. The operating temperature of the sCMOS sensor can reach to -20°C for CNX22 and - 30°C for CNX66 with a peltier cooler device. In addition to the commonly used mode of saving original images, the cameras provide a mode of real-time extraction of X-ray events and storage their information, which significantly reduces the requirement for data storage and offline analysis work. For both cameras, the energy resolutions can reach less than 200 eV at 5.9 keV using single-pixel events. These cameras are suitable for X-ray spectroscopy applications in laboratories and calibration for the space X-ray telescopes.

Citation Download Citation

Wenxin Wang, Zhixing Ling, Chen Zhang, Qiong Wu, Zhenqing Jia, Xinyang Wang, Weimin Yuan, and Shuang-Nan Zhang "Design and test results of scientific x-ray CMOS cameras", Proc. SPIE 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X, 121910L (29 August 2022); https://doi.org/10.1117/12.2628842

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