Publications by authors named "C Pradervand"
The upgrade of the Swiss Light Source, called SLS 2.0, necessitates comprehensive updates to all 18 user front ends. This upgrade is driven by the increased power of the synchrotron beam, reduced floor space, changing source points, new safety regulations and enhanced beam properties, including a brightness increase by up to a factor of 40.
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- The researchers introduced a new resonant inelastic hard x-ray scattering setup at the Bernina beamline in SwissFEL, featuring high energy, momentum, and temporal resolution using a compact Johann-type spectrometer.
- They achieved an approximate resolution of 180 meV while studying honeycomb iridate α-LiIrO, confirming that their findings align well with previous synchrotron data.
- The time-resolved RIXS transients revealed energy loss changes less than 2 eV, linked to electron hopping in the lattice, which were attributed to modulation of inter-site transition scattering efficiency and transient changes in on-site Coulomb interaction.
Gas attenuators are important devices providing accurate variation of photon intensity for soft X-ray beamlines. In the SwissFEL ATHOS beamline front-end the space is very limited and an innovative approach has been taken to provide attenuation of three orders of magnitude up to an energy of 1200 eV. Additive manufacturing of a differential pumping system vacuum manifold allowed a triple pumping stage to be realized in a space of less than half a meter.
View Article and Find Full Text PDFThe SwissFEL soft X-ray free-electron laser (FEL) beamline Athos will be ready for user operation in 2021. Its design includes a novel layout of alternating magnetic chicanes and short undulator segments. Together with the APPLE X architecture of undulators, the Athos branch can be operated in different modes producing FEL beams with unique characteristics ranging from attosecond pulse length to high-power modes.
View Article and Find Full Text PDFThe list of authors in the paper by Juranić et al. (2018) [J. Synchrotron Rad.
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