Experimental analysis confirms effective alignment method for the VIRGO interferometer, suggesting high precision in measurements.
A small fixed-mirrors Michelson interferometer has been built in Frascati to experimentally study the alignment method that has been suggested for VIRGO. The experimental results are excellent and fully confirm the adequacy of the method. The minimum angular misalignment that can be detected in the presented set-up is 10 nrad.
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D et al. (1996) studied this question.
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