Measurement of the Analyzing Power of \({pp}\) and \(\bar{{p}}{{p}}\) Elastic Scattering at the SPASCHARM Facility at U-70

The study of spin effects in elastic proton–proton and antiproton–proton scattering in the SPASCHARM experiment at U-70 accelerator facility (Institute for High Energy Physics, National Research Centre Kurchatov Institute, Protvino, Moscow oblast) is discussed. Polarized beams or a polarized target of the experiment will be used to measure the analyzing power \(A_{N}\) of elastic scattering of protons and antiprotons. The possibility of using two different types of the detectors to register recoil particles of elastic scattering of protons is analyzed. In the first case, it is proposed to use scintillation counters, the second option is a detector based on proportional chambers. A comparison of the registration efficiency of elastic \(pp\) scattering for two configurations of the experimental setup is carried out, and the required measurement time is determined.