Inclusive cross section for the production of Λ - and Λ -hyperons in proton-nucleus interactions at 920 GeV on carbon, titanium and tungsten targets are investigated. Differential cross sections as a function of Feynman-x ( F x ) and transverse momentum square ( 2 t p ) were studied. The atomic mass number (A) dependence of total production cross sections in negative F x region ( 0,12 0 F − << x ) are presented.
Design of STS and module prototype of silicon micro-strip detector for particle momenta measurements with a resolution of around Δp/p ≈ 1 % are presented. Very high radiation level and inhomogeneous track distribution result in modular construction of the detector stations. The micro-strip detectors are planned to be read out with the help of СВМ-XYTER chip. The system requirements include radiation tolerant sensors with high spatial resolution and a fast readout compatible with high-level-only triggers. Concept of the silicon detection system and the R&D on micro-strip sensors as well as front-end electronics for the building blocks of the detector stations are discussed.