  Experiments with $\Omega^{\pm}$ baryons moving in a crystal at LHC in
addition to EDM measurement open possibility to study electric quadrupole
moment, to observe birefringence effect (spin oscillations and spin dichroism)
for $\Omega^{\pm}$ baryons and to get information about constants describing
P-odd, T-odd effects at $\Omega^{\pm}$ baryon interactions with electrons and
nuclei
