论文标题
Cherenkov和闪烁分离的水基液体闪烁体的表征
Characterization of water-based liquid scintillator for Cherenkov and scintillation separation
论文作者
论文摘要
本文介绍了闪烁光的产量和时间曲线的测量，该浓度是通过线性烷基苯苯（LAB）和2,5-二苯乙氧甲氯甲苯（PPO）制成的。我们发现，闪光灯的产量是线性的，液体闪烁体在水中的浓度在1-10％之间，斜率为127.9+-17.0 pH/MEV/浓度，截距值为108.3+-51.0 pH/MEV，后者的浓度为浓度较低的非线性率较低1％。这比纯液体闪烁体的光产量的简单外推要大于预期。测得的时间曲线始终比纯液体闪光灯的速度始终快，上升时间小于250ps，并且迅速衰减常数在2.1-2.85ns范围内。此外，使用国际象棋实验中的宇宙躯体对Cherenkov和闪烁光进行了分离，以进行每种配方，这表明以厘米尺度的分离有所改善。最后，我们简要讨论大型探测器的前景。
This paper presents measurements of the scintillation light yield and time profile for a number of concentration of water-based liquid scintillator, formulated from linear alkylbenzene (LAB) and 2,5-diphenyloxazole (PPO). We find that the scintillation light yield is linear with the concentration of liquid scintillator in water between 1 and 10% with a slope of 127.9+-17.0 ph/MeV/concentration and an intercept value of 108.3+-51.0 ph/MeV, the latter being illustrative of non-linearities with concentration at values less than 1%. This is larger than expected from a simple extrapolation of the pure liquid scintillator light yield. The measured time profiles are consistently faster than that of pure liquid scintillator, with rise times less than 250ps and prompt decay constants in the range of 2.1-2.85ns. Additionally, the separation between Cherenkov and scintillation light is quantified using cosmic muons in the CHESS experiment for each formulation, demonstrating an improvement in separation at the centimeter scale. Finally, we briefly discuss the prospects for large-scale detectors.
