CYG$\nu$S: Detecting solar neutrinos with directional gas time projection chambers

Abstract

CYGNUS is a proposed global network of large-scale gas time projection chambers (TPCs) with the capability of directionally detecting nuclear and electron recoils at $\gtrsim$keV energies. The primary focus of CYGNUS so far has been the detection of dark matter, with directional sensitivity providing a means of circumventing the so-called neutrino fog. However, the excellent background rejection and electron/nuclear recoil discrimination provided by directionality could turn the solar neutrino background into an interesting signal in its own right. For example, directionality would facilitate the simultaneous spectroscopy of multiple different flux sources. Here, we evaluate the possibility of measuring solar neutrinos using the same network of gas TPCs built from $10$ m${}^3$-scale modules operating under conditions that enable simultaneous sensitivity to both dark matter and neutrinos. We focus in particular on electron recoils, which provide access to low-energy neutrino fluxes like $pp$, $pep$, ${}^7$Be, and CNO. An appreciable event rate is already detectable in experiments consisting of a single $10$ m${}^3$ module, assuming standard fill gases such as CF${}_4$ mixed with helium at atmospheric pressure. With total volumes around 1000 m${}^3$ or higher, the TPC network could be complementary to dedicated neutrino observatories, whilst entering the dark-matter neutrino fog via the nuclear recoil channel. We evaluate the required directional performance and background conditions to observe, discriminate, and perform spectroscopy on neutrino events. We find that, under reasonable projections for planned technology that will enable 10--30-degree angular resolution and $\sim 10$\% fractional energy resolution, CYGNUS could be a competitive directional neutrino experiment.

23 pages, 14 figures

References in corpus (44)

• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• Direct Detection of WIMP Dark Matter: Concepts and Status
• A new Generation of Standard Solar Models
• First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon
• Experimental evidence of neutrinos produced in the CNO fusion cycle in the Sun
• Fog on the horizon: a new definition of the neutrino floor for direct dark matter searches
• Neutrino Backgrounds to Dark Matter Searches
• Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components
• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Theia: An advanced optical neutrino detector
• Solar and Atmospheric Neutrinos: Background Sources for the Direct Dark Matter Searches
• The Migdal Effect and Photon Bremsstrahlung in effective field theories of dark matter direct detection and coherent elastic neutrino-nucleus scattering
• Readout technologies for directional WIMP Dark Matter detection
• Directional Dark Matter Detection Beyond the Neutrino Bound
• The Future of Solar Neutrinos
• Directional recoil detection
• Can we overcome the neutrino floor at high masses?
• Solar neutrino physics with low-threshold dark matter detectors
• Improved measurement of solar neutrinos from the Carbon-Nitrogen-Oxygen cycle by Borexino and its implications for the Standard Solar Model
• Can Solar Neutrinos be a Serious Background in Direct Dark Matter Searches?
• Sub-GeV Atmospheric Neutrinos and CP-Violation in DUNE
• Final results of Borexino on CNO solar neutrinos
• Measurement of the ${}^8$B Solar Neutrino Flux in SNO+ with Very Low Backgrounds
• Neutrino physics with dark matter detectors
• Exploring the hidden interior of the Earth with directional neutrino measurements
• Primordial Black Hole Dark Matter evaporating on the Neutrino Floor
• Dark matter, light mediators, and the neutrino floor
• First Directional Measurement of sub-MeV Solar Neutrinos with Borexino
• Directional detection of dark matter with diamond
• Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils
• Measurements of ZnWO${}_4$ anisotropic response to nuclear recoils for the ADAMO project
• Coherent Elastic Neutrino-Nucleus Scattering with directional detectors
• Time-integrated directional detection of dark matter
• Correlated and Integrated Directionality for sub-MeV solar neutrinos in Borexino
• CYGNO: a gaseous TPC with optical readout for dark matter directional search
• ecCNO Solar Neutrinos: A Challenge for Gigantic Ultra-Pure Liquid Scintillator Detectors
• Ultra-low radioactivity Kapton and copper-Kapton laminates
• Compact, directional neutron detectors capable of high-resolution nuclear recoil imaging
• Coherent elastic neutrino-nucleus scattering with the $\nu$BDX-DRIFT directional detector at next generation neutrino facilities
• Development of a Negative Ion Micro TPC Detector with SF${}_6$ Gas for the Directional Dark Matter Search
• Solar neutrinos with CE$\nu$NS and flavor-dependent radiative corrections
• Independent determination of the Earth's orbital parameters with solar neutrinos in Borexino
• Particle detection and tracking with DNA
• The CYGNO experiment, a directional detector for direct Dark Matter searches

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