Core Level Absorption & Emission Spectroscopies (CLÆSS) Beamline

The CLÆSS (pronounced [kla:s]) beamline will provide a simultaneous and unified access to two complementary techniques: absorption and emission spectroscopies. The energy range is 2.4 – 65 keV. At a later stage, x-ray magnetic circular dichroism (XMCD) technique with quarter-wave plates will be added.

The sample infrastructure will include cryostats and vacuum chambers for low-temperature/low-energy measurements; gas lines, exhausts, poison gas sensors and ample space for in-situ chemical/catalytical research. A sample preparation room in close proximity to the beamline (glove box, pellet press, fume cupboards, analytical balance etc.) is under construction.

Status

In user operation
See the commissioning progress here

Staff

Laura Simonelli: beamline scientist (lsimonelli@cells.es)
Carlo Marini: beamline scientist (joining the staff in February 2014)
Marta Avila: postdoc scientist
Edmundo Fraga, Yury Nikitin, Ricardo Valcárcel, Francesc Farré, Carles Colldelram: mechanical engineering
Zbigniew Reszela, Roberto Puron, David Fernández: computing & controls
Jose Avila, Oscar Matilla: electronics

Technical Description

• Source - Multipole Wiggler
• Front-end
• Optics layout
• Optical alignment
• Beamline performance

Experimental station

• Layout
• Core Level Emission Analyzer and Reflectometer (CLEAR)
• Sample environment
• Beamline control software

Software

• Software maintained at the beamline

Miscellaneous

• XAFS course, 13-15 September 2012
• Links and various documents

Documentation

• Original Proposal of the beamline (2005)
• Conceptual Design of ALBA XAS beamline (2006)
• Conceptual Design of X-ray emission spectrometer (2007)
• Conceptual Design Report "Requirements for quarter-wave plates on ALBA XAS beamline" (2007)
• Conceptual Design Report "Sample Environment at ALBA XAS beamline" (2008)