Investigation of pion-nucleon interactions at energies up to 1 GeV at the ''Kaspij'' device

A Kaspy device located on the JINR synchrophasotron 8.1 GeV extracted proton beam and intended for using pion-nucleus interactions at energies of Up to 1 GeV is described. The device consists of a magnetooptical channel, magnetooptical spectrometer, a set of scintillation counters, a set of multiwire proportional and drift chambers a system for data pick-up from detectors, Chambers and equipment necessary for the operation and control of some separate parts of the Kaspy device. Calculated parameters of the magnetooptical channel and spectrometer of pions are given as well as measured values of pions plus yields in the magnetic channel for a brass target of 88 cm length. A program of physical investigations into elastic and inelastic pion scattering with nuclei at the Kaspy device which are necessary for the development of the microscopic theory of pion-nuclear interactions is described