Surface detectors of the TAx4 experiment

Abstract

Telescope Array (TA) is the largest ultrahigh energy cosmic-ray (UHECR) observatory in the Northern Hemisphere. It explores the origin of UHECRs by measuring their energy spectrum, arrival-direction distribution, and mass composition using a surface detector (SD) array covering approximately 700 km${}^2$ and fluorescence detector (FD) stations. TA has found evidence for a cluster of cosmic rays with energies greater than 57 EeV. In order to confirm this evidence with more data, it is necessary to increase the data collection rate.We have begun building an expansion of TA that we call TAx4. In this paper, we explain the motivation, design, technical features, and expected performance of the TAx4 SD. We also present TAx4's current status and examples of the data that have already been collected.

arXiv comment26 pages, 17 figures, submitted to Nuclear Inst. and Methods in Physics Research, A

References in corpus (9)

• QGSJET-II: towards reliable description of very high energy hadronic interactions
• The surface detector array of the Telescope Array experiment
• Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment
• Measurement of the Flux of Ultrahigh Energy Cosmic Rays from Monocular Observations by the High Resolution Fly's Eye Experiment
• New air fluorescence detectors employed in the Telescope Array experiment
• The Cosmic Ray Energy Spectrum Observed with the Surface Detector of the Telescope Array Experiment
• Evidence of Intermediate-Scale Energy Spectrum Anisotropy of Cosmic Rays E$\ge$10${}^{19.2}$ eV with the Telescope Array Surface Detector
• Evidence for Declination Dependence of the Ultrahigh Energy Cosmic Ray Spectrum in the Northern Hemisphere
• CORSIKA Simulation of the Telescope Array Surface Detector

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