• Simulation Studies of the Directivity in Detection of Solar Neutrinos Using Deep Sea Water

    分类: 物理学 >> 核物理学 提交时间: 2025-07-05

    摘要: The Cerenkov detector has a distinct advantage in constructing the reaction vertex and incident direction of energetic particles, enabling the identification of emission sources. We propose a novel approach to measure neutrino sources by employing a modular photomultiplier tube (PMT) array, utilizing clean and transparent deep sea water as the sensitive medium. The feasibility of detecting solar neutrinos is demonstrated through extensive simulations using the Geant4 package. These simulations incorporate the production and transport of Cerenkov photons generated by electron scattering, with the Hough transform method applied to enhance the accuracy of vertex and direction reconstruction, particularly in the presence of noisy or incomplete data. The dominant background from γ-radiation due to 40K in seawater can be suppressed by a factor of 10^7 by introducing a threshold on the number of triggered PMTs. The total reconstruction efficiency increases with incident energy, achieving 25% for 6 MeV neutrinos and 52% for 10 MeV neutrinos, respectively. For source localization, a sufficient number of neutrino events must be detected, depending on background intensity above the threshold. The Hough transform is also applied to manage high noise levels during this process. The simulation results confirm the feasibility of detecting solar neutrinos using deep sea water, paving the way for future underwater neutrino detection systems.

  • Simulation Studies of the Directivity in Detection of Solar Neutrinos Using Deep Sea Water

    分类: 物理学 >> 核物理学 提交时间: 2025-05-22

    摘要: The Cerenkov detector has a distinct advantage in constructing the reaction vertex and incident direction of energetic particles, enabling the identification of emission sources. We propose a novel approach to measure neutrino sources by employing a modular photomultiplier tube (PMT) array, utilizing clean and transparent deep sea water as the sensitive medium. The feasibility of detecting solar neutrinos is demonstrated through extensive simulations using the Geant4 package. These simulations incorporate the production and transport of Cerenkov photons generated by electron scattering, with the Hough transform method applied to enhance the accuracy of vertex and direction reconstruction, particularly in the presence of noisy or incomplete data. The dominant background from γ-radiation due to 40K in seawater can be suppressed by a factor of 10^7 by introducing a threshold on the number of triggered PMTs. The total reconstruction efficiency increases with incident energy, achieving 25% for 6 MeV neutrinos and 52% for 10 MeV neutrinos, respectively. For source localization, a sufficient number of neutrino events must be detected, depending on background intensity above the threshold. The Hough transform is also applied to manage high noise levels during this process. The simulation results confirm the feasibility of detecting solar neutrinos using deep sea water, paving the way for future underwater neutrino detection systems.

  • Simulation Studies of the Directivity in Detection of Solar Neutrinos Using Deep Sea Water

    分类: 物理学 >> 核物理学 提交时间: 2025-04-06

    摘要: The Cerenkov detector has a distinct advantage in constructing the reaction vertex and incident direction of energetic particles, enabling the identification of emission sources. We propose a novel approach to measure neutrino sources by employing a modular photomultiplier tube (PMT) array, utilizing clean and transparent deep sea water as the sensitive medium. The feasibility of detecting solar neutrinos is demonstrated through extensive simulations using the Geant4 package. These simulations incorporate the production and transport of Cerenkov photons generated by electron scattering, with the Hough transform method applied to enhance the accuracy of vertex and direction reconstruction, particularly in the presence of noisy or incomplete data. The dominant background from γ-radiation due to 40K in seawater can be suppressed by a factor of 10^7 by introducing a threshold on the number of triggered PMTs. The total reconstruction efficiency increases with incident energy, achieving 25% for 6 MeV neutrinos and 52% for 10 MeV neutrinos, respectively. For source localization, a sufficient number of neutrino events must be detected, depending on background intensity above the threshold. The Hough transform is also applied to manage high noise levels during this process. The simulation results confirm the feasibility of detecting solar neutrinos using deep sea water, paving the way for future underwater neutrino detection systems.

  • Simulation Studies of the Directivity in Detection of Solar Neutrinos Using Deep Sea Water

    分类: 物理学 >> 核物理学 提交时间: 2025-01-06

    摘要: Cerenkov detector has its advantage to construct the reaction vertex and incident direction of the energetic particles, and thus to locate the emission source. We propose to measure the neutrino source by modular photomultiplier tube (PMT) array using clean and transparent deep sea water as sensitive medium. The feasibility of the detection of solar neutrino is demonstrated by full simulation based on Geant4 packages. The production and transport of Cerenkov photons generated by the νe-e scattering are simulated. Houth transform method is applied to reconstruct the vertex and the direction of the high-speed electron, as well as the incident direction of the neutrinos. The dominant background of gamma radiation from 40K in sea water can be suppressed by a factor of 10^7 if a threshold on the number of firing PMTs is introduced. The total reconstruction efficiency increases with the incident energy, reaching 25% for 6 MeV neutrino and 52% for 10 MeV neutrino, respectively. To locate an existing neutrino source, a certain number of neutrino events are required, depending on the background intensity above the threshold. The simulation results reveal how feasible to measure solar neutrino νe using deep sea water.

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