The project for the realization of a novel undulator-based beamline for “MOlecular Science and Technology” (namely MOST) has been developed within the well established collaboration between Elettra-Sincrotrone Trieste and CNR (ISM and IOM). The scientific goals combine the interests of the community presently working at the Gas Phase Photoemission beamline (GasPhase) and the Circular Polarization beamline (CiPo) for studies of isolated species (atoms, molecules, clusters and nanoparticles), chirality, liquids and adsorbate systems. The MOST beamline will also constitute a facility very well suited to investigate the electronic structure of organic semiconductor materials, starting from their molecular building blocks to deposited films. The beamline will be “Elettra2-ready”, using state-of-the-art optical design and technology to reach higher performance than is available at Elettra today.
The main scientific program is based around
- Strenghtening of the lines of research at the CiPo and GasPhase, with more emphasis on bio and complex organic molecules
- Circular dichroism of chiral systems
- Pump-probe with optical laser
- Liquid state spectroscopy, with emphasis on pump-probe experiments
- Studies of free nanoparticles.
Technical specifications include
- Polarization control via modern Apple type undulators
- Wide energy range from 8 eV to above 1 keV
- Suppression of harmonics at low energy (aperiodic undulator; grating design)
- High flux due to efficient undulator design, modern optics (Variable Line Spacing/groove depth, etc.)
- Integrated design, allowing efficient use of optical laser for pump-probe.
The design of the future beamline and the scientific programs will be illustrated. In particular the performances will expand the scientific possibilities and will establish an important centre at Elettra for the research on atomic and molecular physics.