Improvement in fast particle track reconstruction with robust statistics
Improvement in fast particle track reconstruction with robust statistics
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通过稳健的统计数据改进快速粒子轨迹重建
DOI:
10.1016/j.nima.2013.10.074
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Aartsen M
中科院分区:
文献类型:
--
作者:
Aartsen M
The IceCube project has transformed 1 km3of deep natural Antarctic ice into a Cherenkov detector. Muon neutrinos are detected and their direction is inferred by mapping the light produced by the secondary muon track inside the volume instrumented with photomultipliers. Reconstructing the muon track from the observed light is challenging due to noise, light scattering in the ice medium, and the possibility of simultaneously having multiple muons inside the detector, resulting from the large flux of cosmic ray muons.This paper describes work on two problems: (1) thetrack reconstructionproblem, in which, given a set of observations, the goal is to recover the track of a muon; and (2) thecoincident eventproblem, which is to determine how many muons are active in the detector during a time window. Rather than solving these problems by developing more complex physical models that are applied at later stages of the analysis, our approach is to augment the detector's early reconstruction with data filters and robust statistical techniques. These can be implemented at the level of on-line reconstruction and, therefore, improve all subsequent reconstructions. Using the metric of median angular resolution, a standard metric for track reconstruction, we improve the accuracy in the initial reconstruction direction by 13%. We also present improvements in measuring the number of muons in coincident events: we can accurately determine the number of muons 98% of the time.
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DOI:
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发表时间:
1991
期刊:
影响因子:
--
作者:
R. Chivukula;M. Golden;E. Simmons
通讯作者:
E. Simmons
影响因子:
5
作者:
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通讯作者:
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DOI:
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发表时间:
2006
期刊:
Astroparticle Physics 26
影响因子:
--
作者:
A.Achterberg et al.
通讯作者:
A.Achterberg et al.
DOI:
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发表时间:
2011
期刊:
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作者:
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通讯作者:
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DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
T. Jovin
通讯作者:
T. Jovin