Muon reconstruction with a geometrical model in JUNO
文献类型：期刊论文
| 作者 | Genster, C; Schever, M; Ludhova, L; Soiron, M; Stahl, A; Wiebusch, C |
| 刊名 | JOURNAL OF INSTRUMENTATION
 |
| 出版日期 | 2018 |
| 卷号 | 13 |
| 关键词 | Particle tracking detectors Large detector systems for particle and astroparticle physics Neutrino detectors Cherenkov detectors |
| DOI | 10.1088/1748-0221/13/03/T03003 |
| 文献子类 | Article |
| 英文摘要 | The Jiangmen Neutrino Underground Observatory (JUNO) is a 20 kton liquid scintillator detector currently under construction near Kaiping in China. The physics program focuses on the determination of the neutrino mass hierarchy with reactor anti-neutrinos. For this purpose, JUNO is located 650m underground with a distance of 53 km to two nuclear power plants. As a result, it is exposed to a muon flux that requires a precise muon reconstruction to make a veto of cosmogenic backgrounds viable. Established muon tracking algorithms use time residuals to a track hypothesis. We developed an alternative muon tracking algorithm that utilizes the geometrical shape of the fastest light. It models the full shape of the first, direct light produced along the muon track. From the intersection with the spherical PMT array, the track parameters are extracted with a likelihood fit. The algorithm finds a selection of PMTs based on their first hit times and charges. Subsequently, it fits on timing information only. On a sample of through-going muons with a full simulation of readout electronics, we report a spatial resolution of 20 cm of distance from the detector's center and an angular resolution of 1 : 6 degrees over the whole detector. Additionally, a dead time estimation is performed to measure the impact of the muon veto. Including the step of waveform reconstruction on top of the track reconstruction, a loss in exposure of only 4% can be achieved compared to the case of a perfect tracking algorithm. When including only the PMT time resolution, but no further electronics simulation and waveform reconstruction, the exposure loss is only 1%. |
| 语种 | 英语 |
| WOS记录号 | WOS:000428146400002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/297558]  |
| 专题 | 江门中微子实验 |
| 推荐引用方式 GB/T 7714 | Genster, C,Schever, M,Ludhova, L,et al. Muon reconstruction with a geometrical model in JUNO[J]. JOURNAL OF INSTRUMENTATION,2018,13. |
| APA | Genster, C,Schever, M,Ludhova, L,Soiron, M,Stahl, A,&Wiebusch, C.(2018).Muon reconstruction with a geometrical model in JUNO.JOURNAL OF INSTRUMENTATION,13. |
| MLA | Genster, C,et al."Muon reconstruction with a geometrical model in JUNO".JOURNAL OF INSTRUMENTATION 13(2018). |
入库方式： OAI收割
来源：高能物理研究所
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