The UVSOR Synchrotron Facility (UVSOR-III Synchrotron), which began operating in 1983, is one of the most advanced low-energy synchrotron radiation (SR) facilities in the world. The facility belongs to Japan’s Institute for Molecular Science (IMS), an inter-university research institute of the National Institutes of Natural Sciences (NINS).
The UVSOR-III has an electron storage ring of 53 m-circumference and experimental stations on 6 undulator and 8 dipole beamlines. It has 750 MeV electron beam energy. The machine has undergone two major upgrades and is now called UVSOR-III, with a moderately small emittance of 17 nm·rad and is operated in the top-up mode at 300 mA. It has six undulators. Three in-vacuum undulators provide high-brightness VUV-SX light to the beamlines BL3U, BL4U, and BL6U. BL3U and BL4U are actively used for chemistry and life sciences using in situ and operando measurements, such as soft X-ray absorption and photoelectron spectroscopy.
Since 2020, a unique photoelectron analyzer called the Momentum Microscope has been in operation in BL6U. Two variable polarization undulators provide high-brightness VUV light to the beamlines, BL5U and BL7U, which are used for solid-state physics through angle- and spin-resolved photoelectron spectroscopy. BL1U is equipped with two APPLE-II undulators in tandem and is used for various research purposes, including laser Compton scattering gamma rays. In addition to these beamlines, eight beamlines are operational which use bending magnet radiation, ranging from THz to tender X-rays.
Latest News From UVSOR-III Synchrotron
Specification
Energy: 750 MeV
Current: 300 mA
Operational Beamlines: 14
Emittance: 17 nm rad
Call for Proposal
Applications to use UVSOR are accepted twice a year (usually by mid-June and mid-December).
Depending on the beamline, applications may be submitted for the entire year, for the first half of the year, for the second half of the year.