JUNO physics and detector

doi:10.1016/j.ppnp.2021.103927

Cited by 160 publications

(136 citation statements)

References 174 publications

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“…JUNO is a next-generation liquid scintillator detector under construction in southern China [60,469]. It consists of a 20 kton liquid scintillator target inside an acrylic spherical vessel surrounded by 17, 612 20-inch and 25, 600 3-inch photomultiplier tubes (PMTs).…”

Section: Junomentioning

confidence: 99%

Searches for Baryon Number Violation in Neutrino Experiments: A White Paper

Dev¹,

Koerner²,

Saad³

et al. 2022

Preprint

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Baryon number conservation is not guaranteed by any fundamental symmetry within the Standard Model, and therefore has been a subject of experimental and theoretical scrutiny for decades. So far, no evidence for baryon number violation has been observed. Large underground detectors have long been used for both neutrino detection and searches for baryon number violating processes. The next generation of large neutrino detectors will seek to improve upon the limits set by past and current experiments and will cover a range of lifetimes predicted by several Grand Unified Theories. In this White Paper, we summarize theoretical motivations and experimental aspects of searches for baryon number violation in neutrino experiments.

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Section: Junomentioning

confidence: 99%

Searches for Baryon Number Violation in Neutrino Experiments: A White Paper

Dev¹,

Koerner²,

Saad³

et al. 2022

Preprint

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“…The details of the JUNO CD can be found in Ref. [6,16]. In this section, additional information about JUNO PMTs will be discussed.…”

Section: Juno Central Detectormentioning

confidence: 99%

“…These experiments have made significant achievements in neutrino physics during the past few decades. As the next generation LS detector, JUNO [6] will continue to probe the mysteries of neutrinos. The primary goal of JUNO is to solve the neutrino mass ordering puzzle by precisely measuring the energy spectrum of reactor neutrinos.…”

Section: Introductionmentioning

confidence: 99%

Improving the machine learning based vertex reconstruction for large liquid scintillator detectors with multiple types of PMTs

Li¹,

Zhang²,

He³

et al. 2022

Preprint

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Precise vertex reconstruction is essential for large liquid scintillator detectors. A novel method based on machine learning has been successfully developed to reconstruct the event vertex in JUNO previously. In this paper, the performance of machine learning based vertex reconstruction is further improved by optimizing the input images of the neural networks. By separating the information of different types of PMTs as well as adding the information of the second hit of PMTs, the vertex resolution is improved by about 9.4 % at 1 MeV and 9.8 % at 11 MeV, respectively.

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“…All the PMTs are immersed in a cylindrical pool with both diameter and height 43.5 m filled with ultra-pure water [4]. The SPMT system is an independent photon detection system consisting of not only PMTs but also the front-end instrumentation and readout electronics ( [5], Fig.…”

Section: Introductionmentioning

confidence: 99%

Study of the front-end signal for the 3-inch PMTs instrumentation in JUNO

Wu¹,

Xu²,

He³

et al. 2022

Preprint

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25,600 3-inch PMTs will be installed in Jiangmen Underground Neutrino Observatory (JUNO) to achieve more precise energy calibration and to extend the physics detection potential. Performances of all bare PMTs have been characterized and these PMTs are being instrumented with the high voltage divider, underwater front-end cable, and connector. In this paper, we present a dedicated study on signal quality at different stages of the instrumentation. An optimized high voltage ratio was confirmed and finalized which improved the PMT transit time spread by 25%. The signal charge was attenuated by 22.5% (13.0%) in the 10 m (5 m) cable and it required the addition of 45 V (23 V) to compensate for the loss of PMT gain. There was a 1% overshoot following the PMT signal and no sign of reflection in the connector. A group of 16 3-inch PMTs with the full instrumentation was installed in the JUNO prototype detector together with a few 8-inch and 20-inch PMTs, which showed good stability and demonstrated a photon detection system with multiple types of PMTs.

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JUNO physics and detector

Cited by 160 publications

References 174 publications

Searches for Baryon Number Violation in Neutrino Experiments: A White Paper

Searches for Baryon Number Violation in Neutrino Experiments: A White Paper

Improving the machine learning based vertex reconstruction for large liquid scintillator detectors with multiple types of PMTs

Study of the front-end signal for the 3-inch PMTs instrumentation in JUNO

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