CAJ | 학술논문

中国散裂中子源( CSNS )的建造对中子探测器提出了非常高的要求,如更大的有效面积、二维位置灵敏、高计数率、高探测效率和低的γ灵敏度等.与传统的模拟读出方法相比,数字法读出具有更高的计数率,更小的数据传输量,更简单的电子学设计以及更高的信噪比.对数字法读出进行了理论计算,利用GEM探测器的原始数据分析了数字法读出的位置分辨率与读出条宽度的关系.结果表明,数字法读出对于位置分辨要求较低(小于4 mm )的大面积位置灵敏探测器是一种较好的选择,如CSNS小角谱仪探测器.
중국산렬중자원( CSNS )적건조대중자탐측기제출료비상고적요구,여경대적유효면적、이유위치령민、고계수솔、고탐측효솔화저적γ령민도등.여전통적모의독출방법상비,수자법독출구유경고적계수솔,경소적수거전수량,경간단적전자학설계이급경고적신조비.대수자법독출진행료이론계산,이용GEM탐측기적원시수거분석료수자법독출적위치분변솔여독출조관도적관계.결과표명,수자법독출대우위치분변요구교저(소우4 mm )적대면적위치령민탐측기시일충교호적선택,여CSNS소각보의탐측기.
@@@@Effcient thermal neutron detectors with large area, two-dimensional position sensitive, high coun-ting rate high detection effciency and low gamma sensitivity are required to satisfy the demands for the China Spallation Neutron Source (CSNS). Compared with the traditional analog readout method, the digital readout method has the advantages of higher counting rate, smaller quantity of data transmission, simpler readout system and higher signal to noise ratio. The theoretical analysis of the digital readout method is reported in this paper. Used the raw data of GEM detector, the relationship between the position resolution and the width of the readout strip was studied. The results indicate that the digital readout method could be a good choice for the large area position sensitive detector where the requirement of position resolution is less than 4 mm, e.g. the detector of Small-Angle Neutron Scattering (SANS) diffractometer of CSNS.