Stanley, R.S.De Kockere, S.Allison, P.Beatty, J.Besson, D.Connolly, A.Dasgupta, P.Deaconu, C.de Vries, K.Frikken, D.Hast, C.Huesca Santiago, E.Kuo, C.Y.Latif, U.A.Lukic, V.Meures, T.Mulrey, K.Nam, J.Nozdrina, A.Oberla, E.Prohira, S.Ralston, John P.Sbrocco, C.Torres, J.Toscano, S.Van den Broeck, D.van Eijndhoven, N.Wissel, S.2023-07-312023-07-312022-03-18R.S. Stanley et al. Simulation and Optimisation for the Radar Echo Telescope for Cosmic Rays. 37th International Cosmic Ray Conference (ICRC 2021). July 12th – 23rd, 2021. Online – Berlin, Germanyhttps://hdl.handle.net/1808/34682The SLAC T-576 beam test experiment showed the feasibility of the radar detection technique to probe high-energy particle cascades in dense media. Corresponding particle-level simulations indicate that the radar method has very promising sensitivity to probe the > PeV cosmic neutrino flux. As such, it is crucial to demonstrate the in-situ feasibility of the radar echo method, which is the main goal of the current RET-CR experiment. Although the final goal of the Radar Echo Telescope is to detect cosmic neutrinos, we seek a proof of principle using cosmic-ray air showers penetrating the (high-altitude) Antarctic ice sheet. When an UHECR particle cascade propagates into a high-elevation ice sheet, it produces a dense in-ice cascade of charged particles which can reflect incoming radio waves. Using a surface cosmic-ray detector, the energy and direction of the UHECR can be reconstructed, and as such this constitutes a nearly ideal in-situ test beam to provide the proof of principle for the radar echo technique. RET-CR will consist of a transmitter array, receiver antennas and a surface scintillator plate array. Here we present the simulation efforts for RET-CR performed to optimise the surface array layout and triggering system, which affords an estimate of the expected event rate.© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).http://creativecommons.org/licenses/by-nc-nd/4.0/Article10.22323/1.395.0416openAccess