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Data-driven simultaneous vertex and energy reconstruction for large liquid scintillator detectors

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arxiv 2211.16768 v1 pith:TSW6VI7B submitted 2022-11-30 physics.ins-det hep-ex

classification physics.ins-dethep-ex
keywords energyvertexjunoreconstructiondata-drivendetectorslargeliquid
verification ladder T0 review T1 audit T2 compute T3 formal
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High precision vertex and energy reconstruction is crucial for large liquid scintillator detectors such as JUNO, especially for the determination of the neutrino mass ordering by analyzing the energy spectrum of reactor neutrinos. This paper presents a data-driven method to obtain more realistic and more accurate expected PMT response of positron events in JUNO, and develops a simultaneous vertex and energy reconstruction method that combines the charge and time information of PMTs. For the JUNO detector, the impact of vertex inaccuracy on the energy resolution is about 0.6\%.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An eightfold equivalence-preserving speedup of the JUNO OMILREC vertex and energy reconstruction

    physics.ins-det 2026-08 conditional novelty 6.0 of 10

    Staged equivalence-preserving optimizations cut JUNO's OMILREC reconstruction time from 1524.8 to 189.2 ms/event (8.06x) on an Intel Xeon, with numerical drift below 1.3e-14.

  2. A method for energy and radius reconstruction with simulated charge information in a ton-scale liquid scintillator detector like Taishan Antineutrino Observatory

    physics.ins-det 2026-07 conditional novelty 3.0 of 10

    A charge-only maximum-likelihood reconstruction using calibration-derived nPE maps achieves ~4 cm vertex resolution and sub-1% relative energy-bias behavior for positrons in a ton-scale liquid scintillator detector.

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