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CRTNT Project & Cosmic RayτNeutrino (>1 PeV) Measurement
Zhen Cao IHEP, Beijing, China, University of Utah 2018/11/23 Zhen Cao
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Collaborators: Zhen Cao Alfred M. Huang Pierre Sokolsky Yuting Hu
2018/11/23 Zhen Cao
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Introduction νe: νμ: ντ = 1:1:1 IceCube, ANTRAES, NESTOR, BAIKAL…
Ultra High Energy Neutrino: Air shower vs. single muon ντ to air shower: ντ -> τ + X; τ-> e + νe + ντ % τ-> hardron’s + ντ 65% Existing Air Shower Technique: Fluorescence/Cerenkov Light Detector: HiRes/Dice … 2018/11/23 Zhen Cao
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ντ to air shower conversion
2018/11/23 Zhen Cao
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CRTNT Project ------- Cosmic Ray Tau Neutrino Telescope
12(16) HiRes-type FL/CL Telescopes 5.0m2 Spherical mirror for UV light collection 256 PMT’s cluster for shower imaging 3 sites in front of a mountain Mt. Wheeler Peak between Utah & Nevada FOV: 3x(60 deg x 14 deg) 2018/11/23 Zhen Cao
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2018/11/23 Zhen Cao
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2018/11/23 Zhen Cao
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2018/11/23 Zhen Cao
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Mt. Wheeler Peak near Utah/Nevada Border
2018/11/23 Zhen Cao
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Tau-neutrino Induced Air Shower Initiating
3 Sites of CRTNT Detectors & Tau-neutrino Induced Air Shower Initiating Positions 2018/11/23 Zhen Cao
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One of 3 sites: 4 telescopes to cover 60x14 deg2
2018/11/23 Zhen Cao
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Tau Neutrino Induced Air Shower
AGN and other Neutrino source model Energy loss of tau inside Converter FL/CL detector trigger efficiency 2018/11/23 Zhen Cao
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Predicted Neutrino Spectra: AGN & GZK (1996) (1996) 2018/11/23
Zhen Cao
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The total detection efficiency of tau neutrinos from AGN is 1.4x10-5
The expected event number per year is 4.8 events A duty cycle of 15% is assumed considering a possibility of running with moon partially 2018/11/23 Zhen Cao
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Conclusion Proposed CRTNT Project Has a Sensitivity for AGN Tau Neutrino Detection Using HiRe/Dice-type FL/CL Telescopes 3 Site Detector Has Been Optimized Using Simulation Tool Could See 4.8 Events per Year above 1 PeV (15% Duty Cycle) 2018/11/23 Zhen Cao
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