Performance of a 20-in. photoelectric lens image intensifier tube

Asaoka, Y.; Sasaki, M.

doi:10.1016/j.nima.2011.05.036

Cited by 21 publications

(16 citation statements)

References 7 publications

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“…3 bottom left) achieves a total resolution of ∼ 3 arcminutes covering 42 • FOV. The key feature is the use of electrostatic rather than optical lenses to generate convergent beams with a 20 inch Photoelectric Lens Imaging tube (PLI) [16] (Fig. 3 bottom center), which is the world's largest image intensifier, demagnifying to 1 inch at focal surface, enabling high resolution over a wide FOV [17].…”

Section: From Ashra-1 To Ntamentioning

confidence: 99%

Ashra Neutrino Telescope Array (NTA): Combined Imaging Observation of Astroparticles — For Clear Identification of Cosmic Accelerators and Fundamental Physics Using Cosmic Beams —

Sasaki

Kifune

2017

Proceedings of the 7th International Workshop on Very High Energy Particle Astronomy in 2014 (VHEPA2014)

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In VHEPA (very high energy particle astronomy) 2014 workshop, focused on the next generation explorers for the origin of cosmic rays, held in Kashiwa, Japan, reviewing and discussions were presented on the status of the observation of GeV-TeV photons, TeV-PeV neutrinos, EeV-ZeV hadrons, test of interaction models with Large Hadron Collider (LHC), and theoretical aspects of astrophysics. The acceleration sites of hadrons, i.e., sources of PeV-EeV cosmic rays, should exist in the universe within the GZK-horizon even in the remotest case. We also affirmed that the hadron acceleration mechanism correlates with cosmic ray composition so that it is important to investigate the acceleration mechanism in relevance to the composition survey at PeV-EeV energy. We regard that LHC and astrophysics theories are ready to be used to probe into hadron acceleration mechanism in the universe. Recently, IceCube has reported detection of three events of neutrinos with energies around 1 PeV and additional events at lower energies, which significantly deviate from the expected level of background events. It is necessary to observe GeV-TeV photon, EeV-ZeV hadron and TeV-PeV neutrino all together, in order to understand hadronic interactions of cosmic rays in the PeV-EeV energy region. It is required to make a step further toward exploring the PeV-EeV universe with high accuracy and high statistics observations for both neutrinos and gamma rays simultaneously, by using the instrument such as Ashra Neutrino Telescope Array (NTA). Wide and fine survey of gamma-rays and neutrinos with simultaneously detecting Cherenkov and fluorescence light with NTA will guide us to a new intriguing stage of recognizing astronomical objects and non-thermal phenomena in ultra-high energy region, in addition, new aspect about the fundamental concepts of physics beyond our presently limited understanding; the longstanding problem of cosmic ray origin, the radiation mechanism of gamma-rays, neutrino and cosmic rays from violent objects like blazars, interaction of gamma-rays and cosmic rays with microwave and infrared background photons, and PeV-EeV neutrinos originated from far places beyond the GZK-horizon.

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Section: From Ashra-1 To Ntamentioning

confidence: 99%

Ashra Neutrino Telescope Array (NTA): Combined Imaging Observation of Astroparticles — For Clear Identification of Cosmic Accelerators and Fundamental Physics Using Cosmic Beams —

Sasaki

Kifune

2017

Proceedings of the 7th International Workshop on Very High Energy Particle Astronomy in 2014 (VHEPA2014)

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“…2 bottom left) achieves a total resolution of ∼ 3 arcminutes covering 42 • FOV. The key feature is the use of electrostatic rather than optical lenses to generate convergent beams with a 20 inch Photoelectric Lens Imaging tube (PLI) [13] (Fig. 2 bottom center), which is the world's largest image intensifier, demagnifying to 1 inch at focal surface, enabling high resolution over a wide FOV [14].…”

Section: From Ashra-1 To Ntamentioning

confidence: 99%

Neutrino Telescope Array (NTA): Multi-Astroparticle Explorer for PeV-EeV Universe— For Clear Identification of Cosmic Accelerators and Cosmic Beam Physics-

Sasaki¹

2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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“…• Photoelectric Lens Imaging (PLI) tube [16]: the world's largest imaging-intensifier (I.I.) tube uses electrostatic lens to converge beams from 20 inch photocathode onto 1 inch output focal surface, enabling a very low cost and high performance image sensor; and…”

Section: Ashra-1 and 1 St Search For Grb ν τmentioning

confidence: 99%

Neutrino Telescope Array (NTA): Prospect towards Survey of Astronomical $\nu_\tau$ Sources

Hou¹,

Sasaki²

2016

Proceedings of the 34th International Cosmic Ray Conference — PoS(ICRC2015)

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The recent observation of astrophysical PeV neutrino events by IceCube opens a new chapter in neutrino astronomy, calling for improved point-back abilities and increased sensitivity to fill the gap between IceCube and Auger and probe for PeV-EeV neutrino point sources. By separating ν τ → τ conversion from τ-shower generation, the Earth-skimming ν τ method allows for huge target mass and detection volume simultaneously. The Ashra-1 detector, in operation up Mauna Loa on Hawaii Big Island, has demonstrated the feasibility in a 1 st search for ν τ from a GRB. With design based on this experience, a Neutrino Telescope Array (NTA) observatory is being planned: it will have three site stations watching the air mass surrounded by Mauna Loa, Mauna Kea, and Hualalai, plus a central site station watching the lower night sky. Sensitivities equivalent to > 100 km 3 water and pointing accuracy of < 0.2 • can be achieved with Cherenkov-fluorescence stereoscopic observation for PeV-EeV neutrinos that is almost background-free. With the scientific goal of clear discovery and identification of astronomical ν τ sources, a new International Collaboration is being formed to probe for cosmic proton accelerators.

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Performance of a 20-in. photoelectric lens image intensifier tube

Cited by 21 publications

References 7 publications

Ashra Neutrino Telescope Array (NTA): Combined Imaging Observation of Astroparticles — For Clear Identification of Cosmic Accelerators and Fundamental Physics Using Cosmic Beams —

Ashra Neutrino Telescope Array (NTA): Combined Imaging Observation of Astroparticles — For Clear Identification of Cosmic Accelerators and Fundamental Physics Using Cosmic Beams —

Neutrino Telescope Array (NTA): Multi-Astroparticle Explorer for PeV-EeV Universe— For Clear Identification of Cosmic Accelerators and Cosmic Beam Physics-

Neutrino Telescope Array (NTA): Prospect towards Survey of Astronomical $\nu_\tau$ Sources

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