Observation of Radar Echoes From High-Energy Particle Cascades
S. Prohira, K.D. de Vries, P. Allison, J. Beatty, D. Besson, A., Connolly, N. van Eijndhoven, C. Hast, C.-Y Kuo, U.A. Latif, T. Meures, J., Nam, A. Nozdrina, J.P. Ralston, Z. Riesen, C. Sbrocco, J. Torres, S. Wissel
TL;DR
This paper reports the first definitive observation of radar echoes from high-energy particle cascades, demonstrating a potential new method for ultra high-energy neutrino detection using radio reflections.
Contribution
It provides experimental evidence of radar echoes from particle cascades, supporting the feasibility of radar-based neutrino detection at energies above 10^16 eV.
Findings
Detected coherent radio reflections consistent with theoretical models.
Simulated ultra high-energy neutrino interactions successfully produced detectable radar echoes.
Supports development of radar detection technology for high-energy neutrinos.
Abstract
We report the observation of radar echoes from the ionization trails of high-energy particle cascades. These data were taken at the SLAC National Accelerator Laboratory, where the full electron beam (10 e at 10 GeV/e) was directed into a plastic target to simulate an ultra high-energy neutrino interaction. This target was interrogated with radio waves, and coherent radio reflections from the cascades were detected, with properties consistent with theoretical expectations. This is the first definitive observation of radar echoes from high-energy particle cascades, which may lead to a viable neutrino detection technology for energies eV.
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