The SKA Particle Array Prototype: The First Particle Detector at the Murchison Radio-astronomy Observatory

Abstract

We report on the design, deployment, and first results from a scintillation detector deployed at the Murchison Radio-astronomy Observatory (MRO). The detector is a prototype for a larger array -- the Square Kilometre Array Particle Array (SKAPA) -- planned to allow the radio-detection of cosmic rays with the Murchison Widefield Array and the low-frequency component of the Square Kilometre Array. The prototype design has been driven by stringent limits on radio emissions at the MRO, and to ensure survivability in a desert environment. Using data taken from Nov.\ 2018 to Feb.\ 2019, we characterize the detector response while accounting for the effects of temperature fluctuations, and calibrate the sensitivity of the prototype detector to through-going muons. This verifies the feasibility of cosmic ray detection at the MRO. We then estimate the required parameters of a planned array of eight such detectors to be used to trigger radio observations by the Murchison Widefield Array.

17 pages, 14 figures, 3 tables

References in corpus (7)

• The spectrum of high-energy cosmic rays measured with KASCADE-Grande
• A method for high precision reconstruction of air shower Xmax using two-dimensional radio intensity profiles
• BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal
• New Limits on the Ultra-high Energy Cosmic Neutrino Flux from the ANITA Experiment
• The Engineering Development Array: A low frequency radio telescope utilising SKA precursor technology
• A lunar radio experiment with the Parkes radio telescope for the LUNASKA project
• Noise statistics in a fast digital radio receiver: the Bedlam backend for the Parkes Radio Telescope