In 2018-2019 a cosmic-ray latitude survey at sea level was performed by the TRISTAN detector, an autonomous system composed by three planes of RPCs (120 x 150 cm2). The detector made a two-way journey on board of the Spanish vessel Sarmiento de Gamboa between Vigo (Spain) and Punta Arenas (Chile), measuring continuously the cosmic-ray rate throughout the Atlantic crossing. In this work, we present the results of the first journey, correlating the obtained variation of the cosmic-ray rate with the vertical cutoff rigidity, as well as presenting some details of the detector and its autonomous DAQ system used during the campaign.
@article{arxiv.2004.13615,
title = {The TRISTAN detector -- 2018-2019 Latitude Survey of Cosmic Rays},
author = {J. P. Saraiva and A. Blanco and J. A. Garzón and D. García-Castro and L. Lopes and V. Villasante-Marcos},
journal= {arXiv preprint arXiv:2004.13615},
year = {2020}
}