Müller, R.; Bawagan, A.; Hoehl, A.; Klein, R.; Ulm, G.; Feikes, J.; Hartrott, M. v.; Schade, U.; Wüstefeld, G.: Characterization of MLS THz radiation at a dedicated beamline. In: Proceedings of PAC09, Vancouver, BC, Canada, 2009
Abstract:
The Physikalisch-Technische Bundesanstalt (PTB), the German national metrology institute is operating the low-energy electron storage ring Metrology Light Source (MLS) in Berlin Adlershof in close cooperation with the BESSY GmbH. The MLS is designed and prepared for a special machine optics mode (low-alpha operation mode) based on a sextupole and octupole correction scheme, for the production of coherent synchrotron radiation in the FIR and THz region. At the MLS two bending magnet beamlines dedicated to the use of IR and THz synchrotron radiation were built. An IR beamline optimized for the MIR to FIR is now in operation. First measurements at this beamline showed the potential of the MLS as a source of THz radiation*. However, the propagation of sub-terahertz electromagnetic waves from the source point to the experiment through such a typical IR beamline is strongly affected by diffraction. This is why we decided to build a dedicated THz beamline with larger extraction optics. We present first results from the commissioning of the dedicated THz beamline. *R. Müller et al., Proc. of EPAC08, 2058 (2008)