Patent ID: 8174229
Filing Date: 2012-05-08
Classification: H01J

Abstract:
1. A positioning control method of a sample stage apparatus including a plurality of tables with different axes, rods that drive each of the tables, and connection portions that connect the tables to the rods and include concave portions and pins inserted into the concave portions, the method comprising: a high-speed movement step of moving one of the plurality of tables with different axes to a predetermined high-speed movement target position at a first movement speed; a positional deviation correcting step of moving the table to a predetermined low-speed positioning step start position at a second movement speed that is lower than the first movement speed after the high-speed movement step; a low-speed positioning step of moving the table to a predetermined target position at a third movement speed that is lower than the second movement speed after the positional deviation correcting step; and a step of returning the rod to separate the pin from the concave portion after the low-speed positioning step.