Scientific goals
  •  Study of temporal variations in the energy spectra of hard EM radition in the broad-band energy range from 15 keV to 2000 keV.
  • Fast timing of hard X-ray radiation in  flares.
  • Measuremnt of the linear polarisation of hard X-rays in flares.
  • Hard X-ray imaging of Sun.
  • Study of energy spectra, charge and mass composition of ions acclerated in flares.