  The optimum scheme for geometric phase measurement in EAST Tokamak is
proposed in this paper. The theoretical values of geometric phase for the probe
beams of EAST Polarimeter-Interferometer (POINT) system are calculated by path
integration in parameter space. Meanwhile, the influences of some controllable
parameters on geometric phase are evaluated. The feasibility and challenge of
distinguishing geometric effect in the POINT signal are also assessed in
detail.
