PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - CRI - Cosmic Ray Indirect
Updates from the OVRO-LWA: Commissioning a Full-Duty-Cycle Radio-Only Cosmic Ray Detector
K. Plant*, A. Romero-Wolf, W. Carvalho, K. Belov and G. Hallinan
Full text: pdf
Pre-published on: July 06, 2021
Published on: March 18, 2022
The Owens Valley Radio Observatory- Long Wavelength Array (OVRO-LWA) in Eastern California is currently undergoing an expansion to 352 dual-polarization antennas and new signal processing infrastructure. The upgraded array will operate a full-duty-cycle cosmic ray detector simultaneously with a variety of radio astronomy observations. Expanding the methods introduced in a previous demonstration, this detector will operate on the radio signals alone to trigger data capture, identify cosmic rays in the presence of radio-frequency interference (RFI), and reconstruct the air shower properties: energy, direction, and Xmax. When fully commissioned, the OVRO-LWA will observe thousands of cosmic rays per year at energies 10^17-10^18 eV and will constrain the cosmic ray composition across the cosmic ray spectrum's second knee with a typical Xmax precision better than 20g/cm^2 per air shower, thereby offering new composition information across the energy limits of Galactic accelerators. Commissioning for the OVRO-LWA is ongoing and is planned for completion in late 2021. I will present the trigger design, RFI flagging strategy, and a progress update from early commissioning.
DOI: https://doi.org/10.22323/1.395.0204
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