Prototype scintillator cell for an In-based solar neutrino detector
Prototype scintillator cell for an In-based solar neutrino detector
复制标题
用于In基太阳中微子探测器的原型闪烁体电池
DOI：
10.1016/j.nima.2005.03.166
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发表时间：
2005
影响因子：
1.4
通讯作者：
U. Schwan
中科院分区：
文献类型：
--
作者：
D. Motta;C. Buck;F. Hartmann;T. Lasserre;S. Schonert;U. Schwan
我们描述了在MPIK进行的工作，设计，建模，构建和表征一个原型电池充满了一种新的铟负载的闪烁体的实时低能量太阳中微子光谱的兴趣。首先，通过实验和蒙特卡罗模拟研究了光在光模块中的传播。在此基础上，搭建了5cm×5cm×100cm的探测器样机，并对几种样品的光学性能进行了测试。我们首先测试了一个基准的基于PXE的闪烁体，它执行的衰减长度为104.2m和光电子产额为10730 pe/MeV。然后我们测量了三个加载样品。在加载量为44 g/l时，对477 keV反冲电子的能量分辨率为± 11.6%，空间分辨率为± 7 cm。在该池中的长程衰减长度为1.3m，估算的光电子产额为200 pe/MeV。所有测试样品的光衰减和相对光输出都可以通过MC相当好地再现。该系统的所有光学性质在> 1年的时间内保持稳定。
We describe the work carried out at MPIK to design, model, build and characterize a prototype cell filled with a novel indium-loaded scintillator of interest for real-time low energy solar neutrino spectroscopy. First, light propagation in optical modules was studied with experiments and Monte Carlo simulations. Subsequently a 5cm×5cm×100cm prototype detector was set-up and the optical performances of several samples were measured. We first tested a benchmark PXE-based scintillator, which performed an attenuation length of ∼4.2m and a photo-electron yield of ∼730pe/MeV. Then we measured three In-loaded samples. At an In-loading of 44g/l, an energy resolution of ∼11.6% and a spatial resolution of ∼7cm were attained for 477keV recoil electrons. The long-range attenuation length in the cell was ∼1.3m and the estimated photo-electron yield ∼200pe/MeV. Light attenuation and relative light output of all tested samples could be reproduced reasonably well by MC. All optical properties of this system have remained stable over a period of >1year.