title: A compact tool for coaxial laser alignment on a time-sharing beamline at Taiwan Light Source.
abstract: A simple design and easily installed tool for alignment has been developed for time-sharing undulator beamlines. A laser beam is directed onto a beam splitter inside the vacuum chamber, then reflects 90° along the synchrotron beam path; this beam serves as a reference to mimic the synchrotron beam path. Use of this tool greatly abbreviated alignment of an end-station after beamline switching; both beamline diagnosis and end-station development can be completed before the synchrotron beam time begins.
authors.affiliation: National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300076, Taiwan.
authors.forename: Jih Young
authors.initials: JY
authors.lastname: Yuh
keywords: Taiwan Light Source; laser alignment; multi-branch beamline; two-stage differential pumping system