An improved evaluation of the neutron background in the PandaX-II experiment
文献类型：期刊论文
| 作者 | Wang, QH; Abdukerim, A; Chen, W; Chen, X; Chen, YH; Cui, XY; Fan, YJ; Fang, DQ; Fu, CB; Geng, LH |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2020 |
| 卷号 | 63期号:3页码:- |
| ISSN号 | 1674-7348 |
| 关键词 | DARK-MATTER |
| DOI | 10.1007/s11433-019-9603-9 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In dark matter direct detection experiments, neutron is a serious source of background, which can mimic the dark matter-nucleus scattering signals. In this paper, we present an improved evaluation of the neutron background in the PandaX-II dark matter experiment by a novel approach. Instead of fully relying on the Monte Carlo simulation, the overall neutron background is determined from the neutron-induced high energy signals in the data. In addition, the probability of producing a dark-matter-like background per neutron is evaluated with a complete Monte Carlo generator, where the correlated emission of neutron(s) and gamma(s) in the (alpha, n) reactions and spontaneous fissions is taken into consideration. With this method, the neutron backgrounds in the Run 9 (26-ton-day) and Run 10 (28-ton-day) data sets of PandaX-II are estimated to be (0.66 +/- 0.24) and (0.47 +/- 0.25) events, respectively. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32700]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shandong Univ, Key Lab Particle Phys & Particle Irradiat MOE, Jinan 250100, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 3.Shanghai Jiao Tong Univ, INPAC, Shanghai Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 4.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 5.Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Peoples R China 6.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China 7.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 8.Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China 9.Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing 100191, Peoples R China 10.Univ Shanghai Sci & Technol, Sch Med Instrument & Food Engn, Shanghai 200093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, QH,Abdukerim, A,Chen, W,et al. An improved evaluation of the neutron background in the PandaX-II experiment[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2020,63(3):-. |
| APA | Wang, QH.,Abdukerim, A.,Chen, W.,Chen, X.,Chen, YH.,...&Zhou, XP.(2020).An improved evaluation of the neutron background in the PandaX-II experiment.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,63(3),-. |
| MLA | Wang, QH,et al."An improved evaluation of the neutron background in the PandaX-II experiment".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 63.3(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。