论文标题
塑料闪烁探测器用于飞行时间质量测量
Plastic Scintillation Detectors for Time-of-Flight Mass Measurements
论文作者
论文摘要
快速计时探测器是实验设置的重要元素，用于飞行时间（TOF）质量核的质量测量。我们已经通过增加了每个检测器的光电型管的数量来升级在国家超导反导性基因实验室（NSCL）中使用的闪光灯探测器，并以$^{48} $ CA Beam的测试实验在NSCL的测试实验中表征了它们。新检测器的时间分辨率（$σ$）为7.5 ps。我们系统地研究了影响其时间表现的不同因素。此外，我们评估了使用定时信息在闪烁体上定位命中点的能力，并获得了定义明确的梁斑点1毫米以下的分辨率（$σ$）。
Fast timing detectors are an essential element in the experimental setup for time-of-flight (ToF) mass measurements of unstable nuclei. We have upgraded the scintillator detectors used in experiments at the National Superconducting Cyclotron Laboratory (NSCL) by increasing the number of photomultiplier tubes that read out their light signals to four per detector, and characterized them in a test experiment with $^{48}$Ca beam at the NSCL. The new detectors achieved a time resolution ($σ$) of 7.5 ps. We systematically investigated different factors that affect their timing performance. In addition, we evaluated the ability of positioning the hitting points on the scintillator using the timing information and obtained a resolution ($σ$) below 1 mm for well-defined beam spots.
