An electron beam recording apparatus includes: a displacement detection
unit including at least three displacement sensors disposed at each
different angle in a radial direction of the turntable; a shape
calculation unit for calculating, based on the detected displacements by
the at least three displacement sensors, shape data corresponding to
displacements of side surface of the turntable in the radial directions;
a rotation runout computing unit for computing, based on the shape data
and at least one displacement detected by the at least three displacement
sensors, rotation runout of the turntable including a rotation
asynchronous component and a rotation synchronous component; and a beam
irradiation position adjustment unit for adjusting an irradiation
position of the electron beam based on the rotation runout.