The soft x-ray materials science instrument is the second operational beamline at the linac coherent light source x-rayfree electron laser. The instrument operates with a photon energy range of 480–2000 eV and features a gratingmonochromator as well as bendable refocusing mirrors. A broad range of experimental stations may be installed to study diverse scientific topics such as: ultrafast chemistry, surface science, highly correlated electron systems, matter under extreme conditions, and laboratory astrophysics. Preliminary commissioning results are presented including the first soft x-ray single-shot energy spectrum from a free electron laser.
This research was carried out on the SXR Instrument at the Linac Coherent Light Source (LCLS), a division of SLAC National Accelerator Laboratory and an Office of Science user facility operated by Stanford University for the U.S. Department of Energy (DOE). The SXR Instrument is funded by a consortium whose membership includes the LCLS, Stanford University through the Stanford Institute for Materials Energy Sciences (SIMES), Lawrence Berkeley National Laboratory (LBNL), University of Hamburg through the BMBF priority program FSP 301, and the Center for Free Electron Laser Science (CFEL). In addition this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. V.H., J.C., and L.J. appreciate financial support from the Czech Science Foundation within the grant P108/11/1312. The authors would like to thank Zahid Hussain and Jo Stöhr for guidance on this project.
II. LAYOUT AND INSTRUMENT COMPONENTS
A. Stoppers and shutters
B. Static gas cell
C. TSS laser in-coupling and alignment laser
D. Transmission sample system
E. Varied line spaced gratingmonochromator
F. Exit slit and spectrometer detector
H. Fluence monitor
I. Kirkpatrick-Baez refocusing mirrorsystem
J. Differential pumping system
K. Laser in-coupling system
L. Experimental end stations
M. Commissioning end station
N. Pulse monitoring system
III. CONTROLS AND DATA ACQUISITION (DAQ)
A. Controls and DAQ
B. Connection interface patch panel
IV. LASER SYSTEM
V. COMMISSIONING RESULTS AND BASELINE PERFORMANCE
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