Hanlin Yu;Zhongtao Shen;Yue Long;Yunlong Zhang;Zekun Jia;Yong Song;Shubin Liu
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引用次数: 0
Abstract
The Super Tau-Charm Facility (STCF) is a significant initiative for accelerator-based particle physics in China. Electromagnetic calorimeter (ECAL) is one of the important detectors of STCF, which is tasked with the precise measurement of photons. STCF ECAL uses pure cesium iodide (pCsI) crystals and large-area avalanche photodiodes (APDs) for scintillation and photoelectric conversion. This article explores the methods for energy and time measurement, as well as signal processing under high event rates. The readout electronics scheme, which combines a charge-sensitive amplifier (CSA) with a waveform fitting algorithm after analog-to-digital conversion, is experimentally verified. We determined the CSA parameters through simulations to reduce circuit noise and conducted tests with LEDs to simulate background events. Measurements indicate that the energy measurement noise is 0.8 fC, and the time measurement accuracy reaches 300 ps at 1 GeV.
期刊介绍：
The IEEE Transactions on Nuclear Science is a publication of the IEEE Nuclear and Plasma Sciences Society. It is viewed as the primary source of technical information in many of the areas it covers. As judged by JCR impact factor, TNS consistently ranks in the top five journals in the category of Nuclear Science & Technology. It has one of the higher immediacy indices, indicating that the information it publishes is viewed as timely, and has a relatively long citation half-life, indicating that the published information also is viewed as valuable for a number of years.
The IEEE Transactions on Nuclear Science is published bimonthly. Its scope includes all aspects of the theory and application of nuclear science and engineering. It focuses on instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.
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