分类： 核科学技术 >> 核探测技术与核电子学 提交时间： 2023-06-18 合作期刊: 《Nuclear Science and Techniques》
ZHAO Xing-Wen
QIAN Yi
KONG Jie
SU Hong
DU Zhong-Wei
ZHANG Xue-Heng
YAN Duo
LI Zhan-Kui
LI Hai-Xia
WANG Xiao-Hui
TONG Teng
摘要： A readout electronics has been developed for the silicon strip array detector system of HIRFL-CSR-ETF. It consists of 48 front end electronics (FEE) boards, 12 PXI-DAQ boards and one trigger board. It can implement energy and time measurements of 4608 channels. Each FEE board is based on 6 ASICs (ATHED), which implements energy and time measurements of 96 channels. The PXI-DAQ board meets requirements of high-speed counting and amount of readout channels and can process signals of 4 FEEs. The trigger board is developed to select the valid events. The energy linearity of the readout electronics is better than 0.3% in the dynamic range of 0.10.7 V. In the test with a standard triple alpha source, the energy resolution was 1.8% at 5.48 MeV. This readout electronics enables the silicon strip array system to identify particles of A 14.
分类： 核科学技术 >> 核探测技术与核电子学 提交时间： 2023-06-18 合作期刊: 《Nuclear Science and Techniques》
摘要： Gamma Ray Array Detector (GRAD) is one of external target facility subsystems in the Cooling Storage Ring on the Heavy Ion Research Facility at Lanzhou (HIRFL-CSR). The trigger subsystem of GRAD is required to make a fast L1 trigger decision with a fixed latency for the data acquisition. Because the hit signals from the detector are asynchronous with the local clock of the trigger system, a nondeterministic latency (the value changes between zero and one clock period) is generated when the synchronous receivers of the conventional trigger system process the hit signals. In this paper, an improved trigger logic based on a field-programmable gate array is developed, and comprised of zero-delay broadening circuits as receivers and an improved adding circuit designed for the new receivers. Software simulation and experimental measurement have been conducted. Comparison with the conventional trigger logic, the improved trigger logic has the advantage of eliminating the nondeterministic latency and reducing the total processing latency.
点击量
通过
点击量
下载量
评论
