  Track detectors in high energy physics experiments require an accurate
determination of a large number of alignment parameters. A general method has
been developed, which allows the determination of up to several thousand
alignment parameters in a simultaneous linear least squares fit of an arbitrary
number of tracks. The sensitivity of the method is demonstrated in an example
of the simultaneous alignment of a 56-plane drift chamber and a 2-plane silicon
tracker. About 1400 alignment parameters are determined in a fit of about fifty
thousand tracks.
