Quenching Factor consistency across several NaI(Tl) crystals
Quenching Factor consistency across several NaI(Tl) crystals
复制标题
几种 NaI(Tl) 晶体的淬灭因子一致性
DOI：
10.1088/1742-6596/2156/1/012065
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Li, L.
中科院分区：
文献类型：
--
作者：
Cintas, D.;An, P.;Awe, C.;Barbeau, P. S.;Barbosa de Souza, E.;Hedges, S.;Jo, J. H.;Martínez, M.;Maruyama, R. H.;Li, L.
测试DAMA/Libra年调制结果独立于暗物质粒子和晕模型一直是二十年来的一个挑战。需要使用相同的靶材料NaI(Tl)，目前正在进行两个实验，AnAIS-112和CoSine-100，以实现这一目标。探测器对核反冲的精确响应是必须的，因为这是发现暗物质信号的最有可能的通道。相对于电子产生的光，核反冲产生的光被一个必须通过实验测量的系数猝灭。然而，目前在NaI(Tl)晶体中测量的猝灭因子在暗物质研究感兴趣的能区内并不一致。要弄清这种差异是由于不同NaI(Tl)晶体之间光响应的内在差异，还是源于无法解释的系统效应，将是不同实验之间比较的关键。为了控制系统学，我们在相同的实验装置上测量了五个小的NaI(Tl)晶体的猝灭因子。猝灭因子的结果在晶体间是相容的，在10~80keVnr范围内与能量没有明显的依赖关系。
Testing the DAMA/LIBRA annual modulation result independently of dark matter particle and halo models has been a challenge for twenty years. Using the same target material, NaI (Tl), is required and presently two experiments, ANAIS-112 and COSINE-100, are running for such a goal. A precise knowledge of the detector response to nuclear recoils is mandatory because this is the most likely channel to find the dark matter signal. The light produced by nuclear recoils is quenched with respect to that produced by electrons by a factor that has to be measured experimentally. However, current quenching factor measurements in NaI (Tl) crystals disagree within the energy region of interest for dark matter searches. To disentangle whether this discrepancy is due to intrinsic differences in the light response among different NaI (Tl) crystals, or has its origin in unaccounted for systematic effects will be key in the comparison among the different experiments. We present measurements of the quenching factors for five small NaI (Tl) crystals performed in the same experimental setup to control systematics. Quenching factor results are compatible between crystals and no clear dependence with energy is observed from 10 to 80 keVnr.
影响因子：
4.4
作者：
N. Spooner;G. Davies;J. Davies;G. J. Pyle;T. Bucknell;G. Squier;J. D. Lewin;P. Smith
通讯作者：
N. Spooner;G. Davies;J. Davies;G. J. Pyle;T. Bucknell;G. Squier;J. D. Lewin;P. Smith