The 10th anniversary of UVSOR was celebrated on December 3, 1993. During the past 10 years the number of users has been increasing and is now at about 600, including scientists from foreign countries. The stability and the lifetime of the SR light were improved by introducing a double rf cavity system. The free-electron laser experiment in the short-wavelength region has been carried out and the UV lasing at 300 nm was successfully obtained in July 1993. Eighteen experimental stations are now operational, which cover the wide energy range from far infrared to soft x rays. Two new beamlines are now under construction, which are expected to be useful in the extreme ultraviolet region.
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