Beam polarimetry at the SPASCHARM experiment at IHEP U-70 accelerator

We describe the absolute polarimeters for the beam channel intended to transport polarized proton and antiproton beam at U70 accelerator. The circulating proton beam of 60 GeV/c and intensity 10(13) p/cycle is slowly extracted from accelerator. It strakes the external an aluminum target of one interaction length. The emitted on forward direction Lambda and (Lambda) over bar hyperons by parity violating process serve as the source of the polarized protons and antiprotons. In this case we expect to get the polarized antiproton beams in the momentum range 10-40 GeV/c with intensity, approximately 10(4) - 4x10(5) antiprotons/cycle, 10(6) protons/cycle.