Jul 12 – 23, 2021
Online
Europe/Berlin timezone

Deep learning reconstruction of the neutrino energy with a shallow Askaryan detector

Jul 14, 2021, 12:00 PM
1h 30m
05

05

Poster NU | Neutrinos & Muons Discussion

Speaker

Christian Glaser (Uppsala University, Sweden)

Description

Cost effective in-ice radio detection of neutrinos above a few $10^{16}~$eV has been explored successfully in pilot-arrays. A large radio detector is currently being constructed in Greenland with the potential to measure the first cosmogenic neutrino, and an order-of-magnitude more sensitive detector is being planned with IceCube-Gen2. We present the first end-to-end reconstruction of the neutrino energy from radio detector data. NuRadioMC was used to create a large data set of 40 million events of expected radio signals that are generated via the Askaryan effect following a neutrino interaction in the ice for a broad range of neutrino energies between 100PeV and 10EeV. We simulated the voltage traces that would be measured by the five antennas of a shallow detector station in the presence of noise. We trained a deep neural network to determine the shower energy directly from the simulated experimental data and achieve a resolution better than a factor of two (STD <0.3 in $\log_{10}(E)$) which is below the irreducible uncertainty from inelasticity fluctuations. We present the model architecture and discuss the generalizability of the model in the presence of systematic uncertainties in the simulation code. This method will enable Askaryan detectors to measure the neutrino energy.

Keywords

deep learning;Askaryan;UHE neutrinos;in-ice radio detection;energy reconstruction;radio

Subcategory Experimental Methods & Instrumentation

Primary authors

Christian Glaser (Uppsala University, Sweden) Stephen McAleer (University of California, Irvine) Pierre Baldi (University of California, Irvine) Steven Barwick (University of California Irvine)

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