Klein, R.; Ulm, G.; Feikes, J.; v. Hartrott, M.; Wüstefeld, G.: Status of the Metrology Light Source. In: Garrett, R. [u.a.] [Eds.] : SRI 2009 : the 10th International Conference on Synchrotron Radiation Instrumentation ; Melbourne, Australia, 27 September - 2 October 2009 / ed. Richard Garrett ...New York, NY: Cambridge Univ. Press, 2010 (Materials Research Society symposium proceedings ; 1324). - ISBN 978-1-605-11301-2, p. 543-546
Abstract:
The Physikalisch-Technische Bundesanstalt (PTB), the German national metrology institute, has set up the low-energy electron storage ring Metrology Light Source (MLS) in close cooperation with the Helmholtz-Zentrum Berlin (HZB, formerly BESSY). This new storage ring has been in regular user operation since April 2008 and is dedicated to synchrotron-radiation-based metrology and technological developments in the far-IR/THz, IR, UV, VUV and EUV spectral range. The MLS has a double-bend-achromate lattice structure, injection is from a 105 MeV racetrack microtron. The electron energy can be ramped to any value from 105 MeV up to 630 MeV and the electron beam current covers the range from one stored electron (1 pA) up to 200 mA. The MLS is the first electron storage ring optimized for the generation of coherent synchrotron radiation, based on an electron bunch shortening mode. In this mode, MLS delivers coherent radiation in the far-IR/THz spectral range with enhanced intensity as compared to the normal mode of operation. Several beamlines are in operation or in construction, including one undulator beamline, bending magnet beamlines for the calibration of radiation sources and detectors and for reflectometry, an EUV metrology beamline and three IR/THz beamlines.