摘要
根据MRPC工作机制和高时间分辨的特性,研制一种位置灵敏MRPC原型及读出方法.该探测器具有10个220μm气隙,有效探测面积为20cm×20cm.前端电子学采用专用ASIC芯片,具有快时间响应和输入电荷-输出信号宽度的转换功能.采取同时读取信号传输时间差和感应信号分布的方法实现两维读出.对该探测器性能的束流测试结果显示:沿着读出条方向及其垂直方向的位置分辨分别为 4.5mm和1.6mm,其时间分辨达到63ps,探测效率>95%.
A position-sensitive MRPC prototype with high time resolution was developed. This MRPC has 10×220μm gaps with the active area of 20cm×20cm. A front-end electronics based on NINO ASIC was used. The NINO ASIC can transform the input charge to the width of output signal for the Time-Over-Threshold (TOT) measurement by using High Performance TDC (HPTDC). With the difference of transmit time and distribution of pins amplitude, we can get the two-dimension position information. The beam test result shows a spatial resolution of 4.5mm along the readout pads and 1.6mm perpendicular to the readout pads, respectively. The time resolution is about 63ps and the detection efficiency is over 95%.
出处
《高能物理与核物理》
EI
CSCD
北大核心
2006年第7期660-664,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10375062)资助~~