  A particle, which moves in a crystal, experiences weak interactions with
electrons and nuclei alongside with electromagnetic interaction. Measuring the
polarization vector and the angular distribution of charged and neutral
particles scattered by axes (planes) of an unbent (straight) crystal enables to
obtain restrictions for the EDM value and for {magnitudes} of constants
describing T-odd (CP-odd) interactions Beyond the Standard Model. Spin rotation
and polarization conversion from vector to tensor one and vice versa for a
channelled in a crystal $\Omega^{\pm}$ hyperon enable measuring hyperon's
quadrupole moment that is not possible to measure by use of laboratory
available noncrystalline electric fields.
