Insertion Devices for Highly Brilliant Synchrotron Radiation
The new generation synchrotron radiation sources together with the free-electron laser facilities under construction in US and in Europe aim, in the upcoming years, to drastically increase the peak brilliance of the emitted radiation. This will unleash a number of different experiments in several fields of application including nano technology, biology and nuclear physics.
A significant role in achieving this goal is played by the development of insertion devices such as undulators.
Babcock Noell GmbH (BNG) is strongly involved in the field since 2006 with the design and fabrication for DESY of the first 5m long permanent magnet (PM) planar undulator prototype for XFEL. This 29mm period length unit is capable of moving its 316LN girders with a preci-sion of 1 micron in positioning.
In 2008 BNG successfully fabricated and delivered 11 undulators in 11 months to be installed in PETRA III and FLASH at DESY.
These are 2m long planar undulators with aluminum girders which will allow PETRA III to become one of the most brilliant storage ring-based X-ray radiation sources worldwide.
This result was achieved with a strict quality assurance system and a flexible organization of our project teams.
Additionally in 2007 BNG started the design and fabrication of a conduction cooled 1.5m long superconducting (SC) planar undulator for the ANKA light source at Forschungszentrum Karlsruhe (FZK). This magnet is designed to reach a peak field on the beam axis of 1.5T with a nominal gap of 5mm and will be as-sembled and tested by the end of 2009.
At the moment BNG just completed the fabrication of a prototype which was successfully tested in liquid helium at FZK. This short magnet reached over 95% of the short sample limit of the super-conductor which is 30% above the specification for the full scale magnet.
BNG together with FZK plans to fabricate a prototype of a switching undulator-wiggler and a conduction cooled undulator capable of withstanding the high beam heat load of third generation synchrotron light sources in the next years .
At BNG we are pushing the limit of insertion devices. For both PM and SC undulators our close collaboration with institutes is the key factor for success.
