Speaker
Description
The X-ray Imaging Telescope (XIT) is one of the scientific payloads of the Solar Polar Observatory (SPO). It is primarily responsible for solar X-ray observations, enabling the monitoring of full-disk eruptive events and the acquisition of X-ray spectra for small-scale activities. The X-ray Imaging Telescope (XIT) plans to employ CdZnTe (CZT) detectors as the sensitive elements due to the lightweight nature of CdZnTe crystals and their high average atomic number, which results in a large interaction cross-section with photons.This paper presents the design and implementation of a prototype readout electronics system for CZT detectors, which can be used for the prototype validation of XIT. The system employs the Application-Specific Integrated Circuit (ASIC) VATA461.3 chip to acquire and process signals from the CZT detectors. It includes the hardware design of the detector readout electronics, the development of FPGA firmware, and the implementation of the host computer software, all aimed at prototype validation of the calorimeter section of XIT. Experimental tests show that the equivalent noise charge (ENC) of the system ranges from 201 to 154 𝑒−, and the integral non-linearity (INL) of the 32 channels is better than 4.33%. The energy resolution of large pixels and small pixels is 6.63%@59.5 keV and 5.28%@59.5 keV, respectively, which meet the technical index 4keV@59.5
| Workshop topics | Detector systems |
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