News (April 2005): beamline is in commissioning stage.
The monochromator is equipped in a preliminary start-up version only with a Si(111) double crystal and provided already a first monochromatic synchrotron radiation beam. This monochromator covers the x-ray range between 4 keV and about 20 keV photon energy (expected bandwidth 0.1%). After lateral translation of the crystals also the "white beam" can arrive in the experimental hutch. All beams are attenuated especially at lower photon energies by the passage through beryllium windows with a total thickness of 0.35 mm. Beam size is limited in all cases to 2.5 mm x 2.5 mm.
A Kirkpatrick-Baez crossed mirror system (supplier: XRADIA) is due to be delivered in April 2005. It will be added to the preliminary beamline as shown in the next picture. The focus size in this configuration is limited to the demagnified source image and is expected to be about 5 micron x 10 micron (vert. x hor.).
Ultimately, with the scheme in the next picture, this beamline is supposed to focus synchrotron radiation from a bending magnet at ELETTRA with photon energies between 4 keV and 11 keV (eventually 20 keV) into a focus with a diameter of 1 um. The experimental set-up is optimized for X-ray fluorescence analysis with high flux provided by a large bandpass (1%-5%) double multilayer monochromator at fixed photon energy as well as with reduced flux in smaller bandpass for NEXAFS/XANES and EXAFS/QuickEXAFS scans (intrinsic bandwidth of Si(111) double crystals).
Werner Jark
email werner.jark@elettra.trieste.it
tel: +39 040 375 8540
fax: +39 040 375 8776
