Angströmquelle Karlsruhe

The Angströmquelle Karlsruhe or short ANKA is an electron synchrotron at the Karlsruhe Institute of Technology ( KIT), which serves as a synchrotron radiation source. ANKA heard KIT with the Helmholtz Association of German Research Centres.

The name part " Angstrom " refers to the former Length awareness of the same name back ( 1 angstrom = 0.1 nm), which is still used in some cases for wavelengths in the range of X-ray and synchrotron radiation.

• 6.1 Scientific User
• 6.2 Commercial users

History

After the decision to build in 1997 in the former Forschungszentrum Karlsruhe, the first electron in 1999 could be fed into the storage ring. In March 2003, the operation of internal and external users began with a total of seven beamlines ( beamlines ). Since then, ongoing improvements take place. This expansion measures concern both additional beamlines (now (2013 ) fifteen in operation, three under construction and more are planned ), the ANKA User House to accommodate external scientists who used and partly co-developed at ANKA wiggler and undulators and other infrastructure.

Technology

The storage ring of 110.4 m circumference stores electrons at an energy of 2.5 GeV. For this, the electrons generated in a triode are (90 keV) by a Rennbahnmikrotron (53 MeV) and a booster to 500 MeV pre-accelerated. In the storage ring, the working energy is achieved by further acceleration to near light speed. In the storage ring, there is an ultra-high vacuum of 10-9 mbar. Synchrotron radiation is formed in the deflection in the magnet 16, which hold the electrons on the annular track, and as well. Dipole magnet arrangements in particular with alternating field direction, the wigglers and undulators that deflect electrons in a sinusoid -like web

A special feature of the building is the ANKA superconducting undulator SCU15 demonstrator, who was like his predecessor SCU14 co-developed at ANKA. The advantages of such an undulator are significantly improved brilliance of the generated radiation and a variable spectrum of light that can be adjusted without much effort.

Advantages of synchrotron radiation

As compared to conventional sources of electromagnetic radiation, synchrotron radiation sources provide a much higher spectral bandwidth and intensity. The radiation comprises a continuous region in the electromagnetic spectrum of hard x-ray radiation to ultraviolet, visible light and infrared to terahertz radiation. With monochromators can filter out certain wavelengths. Since the electrons are stored in the form of packets in the ring, the synchrotron radiation occurs pulsed. This dynamic processes are resolved down to the nanosecond range detected. The radiation is polarized, even in its formation (linear or circular) and thus provides an essential prerequisite for many applications.

Existing and planned beamlines ( beamlines ) and its applications

Radiological examination procedures

Spectroscopy

Microfabrication

Organization

The synchrotron research at KIT is divided into three independent but interlocking areas:

• The ANKA light source with the associated beamlines is an independent organizational unit that reports directly to the Bureau of KIT. Both the technical development of the device and the powered by the employees own research associated with the organizational unit ANKA. The User Office at ANKA provides for the support of scientific Guest User.
• The former Institute for Synchrotron Radiation (ISS ), which was commissioned since the establishment of ANKA with the operation and development of the synchrotron radiation source, was transferred in 2012 to the new Institute for Research and synchrotron photons ( IPS). The IPS research continues to be hard on the system, but is now institutionally independent from it.
• The also independent service unit ANKA Commercial Services ( ANKA- CoS) allows commercial customers in industry and research experience.

Access to and use

Scientific user

In addition to internal users and researchers in the development of the synchrotron and individual components ( undulators, etc. ) are involved, external users can use the radiation from ANKA for scientific projects. This is coordinated by the office users. Interested parties can apply in the year in electronic form to measuring time twice; the applications will be assessed and selected by an international panel of experts. On the grounds of the North Campus is also a user home for accommodation during the measurement campaigns. More information for the award of beam time granted the user office.

Commercial users

Commercial use of ANKA beamlines and industrial exploitation and licensing of technologies developed at ANKA via the Service Unit ANKA Commercial Services ( ANKA- CoS ) according to DIN EN ISO 9001:2008. Access to the beam time is without peer review process and is possible at short notice via concertation with the relevant beamline scientist. In contrast to the scientific use, the results have to be published, the results of the commercial use always remain confidential.