Applications for Light and Neutron Sources
beamline and infrastructure applications
New stable and portable x-ray
microspectroscope at photon factory KEK
At the high energy research accelerator KEK in Japan, Dr. Takeichi et
al. designed a novel X-Ray microspectroscope for high resolution com-
position analysis. The setup is comprised of 11 attocube ECS stepping
positioners and a dedicated scanner for sample imaging. All the posi-
tioners are equipped with optoelectronic sensors and can be digitally
controlled. The sample stage is stabilized via attocube’s interferometric
FPS3010 sensor with a resolution of 25 pm. The whole four-stack-setup
is compact enough to fit into a vacuum chamber of only 220×310×200 mm³.
First measurements show the resolution of the new instrument to be
approximately 40 nm.
Y. Takeichi, et al; Rev.Sci.Instr. 87, 013704 (2016); doi: 10.1063/1.4940409
Vibration of high-power precision laser mirror
Dr. Tomas Laštovicka, Dr. Martin Sokol, Dr. Michael Morrissey, Ing. Antonin Fajstavr,
Dr. Stefan Borneis ELI-Beamlines, Dolní Brežany, CZ
RMS [m]
At the “ELI Beamlines facility”, currently under construction in Dolní
Brežany close to Prague in the Czech Republic, we have developed an
ultra-high pointing stability laser mirror mount for guiding the world’s
highest repetition rate HAPLS Petawatt laser over up to 107 meters onto
the target. The attocube IDS3010 offers major advantages compared to
standard sensors like capacitive probes and accelerators when measuring
5 – 100 nrad RMS pointing stability of a mounted high-power precision
laser mirror. While accelerometers may be used to measure mirror
dummies for frequencies > ~12 Hz, the IDS3010 interferometer may
diagnose contactless sub-nm displacements up to 10 MHz of mounted
mirrors without risking the degradation of its laser damage threshold. In
addition the IDS3010 sensor allows working distances up to a few meters.
The software WAVE has proved to be convenient for visualizing in real-
time the displacement data and for identifying resonant frequencies.
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