  The Beam Loss Monitors (BLM) are designed to measure the position and amount
of beam loss in accelerators. In this article, we have studied the 3 GeV
electron losses in the storage ring and secondary particles from the losses on
the beam pipe. We have compared ionization chamber, NaI and Si radiation
detectors as BLM and selected Si detector for further studies. We have
calculated electron deflection angle due to magnetic field mismatches in dipole
magnets, quadrupoles and sextupoles and assumed that electron beam is deflected
and hit the beam pipe with the angle of 3 degrees with respect to the beam
axis. The number and energy of photons and secondary particles on beam pipe and
in Si detector are calculated by the MCNP code and reported in this paper.
