Patent ID: 7439527

Claim:
An ion beam irradiation apparatus which scans, when three axes that are orthogonal to each other at one point are taken as an X-axis, a Y-axis and a Z-axis, in a direction along the X-axis, an ion beam traveling in a direction along the Z-axis, and applies the ion beam onto a substrate held by a substrate holding surface of a holder, comprising: an irradiation angle setting motor which holds the holder, and sets an irradiation angle of the ion beam with respect to the substrate holding surface by rotating the holder around a center axis that is substantially parallel to the X-axis; a Y-axis linear motor which supports the irradiation angle setting motor, and causes the holder and the irradiation angle setting motor to ascend and descend in a direction along the Y-axis; a Z-axis linear motor which supports the Y-axis linear motor, and moves the holder, the irradiation angle setting motor and the Y-axis linear motor in the direction along the Z-axis; and a control unit which operation-controls synchronously the Y-axis linear motor and the Z-axis linear motor so that the substrate holding surface of the holder reciprocates and scans linearly along an S-axis that is substantially parallel to the substrate holding surface and substantially orthogonal to the X-axis.